alaska cruise weather may 2023

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Alaska Cruise Weather by Month

Alaska Cruise Temperature by Month

Whether soaking up the golden sun on a fishing expedition or feeling the crisp breeze as you zipline through picturesque landscapes, you may notice that on an Alaska cruise , weather can vary greatly month-to-month. Princess cruise itineraries travel to the Southeast and Inside Passage regions of Alaska from May through September when wildlife is bustling, greenery is flourishing and salmon are running. Temperatures can reach anywhere from the low 30s to upper 80s depending on your month of travel as well as the port of call. We always recommend that you dress in layers to prepare for whatever weather comes your way. To help you get ready for your awe-inspiring adventure, learn about Alaska cruise temperatures by month.

Alaska Cruise Weather in May

After spending the winter in warmer climates, humpback whales migrate north and break the waters of the Inside Passage, marking the dawn of Alaska’s most vivacious season. Hundreds of king salmon grace the majestic waters of the Pacific while freckled lynx bask in the early summer sun. Thanks to the modest daytime temperatures and refreshing evening climates, May is peak season for many of Alaska’s most cherished wildlife. Weather typically ranges from the 30s to a high of around 55 degrees Fahrenheit. May itineraries invite guests to pack sweaters and jackets for easy layering.

Alaska Cruise Weather in June

Feel the warm embrace of the summer sun throughout June when the Land of the Midnight Sun experiences the height of its daylight. With over 18 hours of golden sun each day, Alaska landscapes kiss the snowy surfaces goodbye and welcome the lush green meadows that bear the fruits of winter’s labor. With newly dried surfaces, hiking expeditions commence. As you venture into the depths of Alaska’s wilderness, reach new heights where you can enjoy unparalleled views of staggering glaciers and roaming hillside wildlife. With lows in the upper 40s and highs in the mid-60s, allow the revitalizing, crisp breeze to tickle your neck as you rejoice in the unforgettable climb.

Alaska Cruise Weather in July

As temperatures continue to rise, relish in the warmest month of the year when Alaska’s wildlife comes out to play. In Icy Strait Point, find regal brown grizzly bears roaming through streams in search of fresh salmon. Or, look for lively humpback whales making a splash off the coast of Juneau. As you embark on your summer adventure, bring light jackets for hiking through shady regions as well as plenty of sunscreen for basking in 18 hours of glorious sunlight each day this month.

Alaska Cruise Weather in August

Cast your line into the marvels of an Alaska summer by cruising in August. As you sail into each port of call, delight your taste buds in the delicacies of Alaska’s waters. Donning subtle notes of the sea, the silver salmon is one of the most sought-after fish and just so happens to be most fruitful this time of year. Whether or not fishing is your forte, be sure to pack water-resistant apparel for every splash and sprinkle that may arise from kayaking down crystalline fjords and hiking through misty rainforests. With lows in the upper 40s and highs of around 60, you’ll feel refreshed and eager to explore the captivating wonders of Alaska.

Alaska Cruise Weather in September

As September begins, the sun dips below the horizon signifying the inauguration of fall. The lush green forests transition into vibrant hues of gold and saffron while the mountaintops become freckled in snowfall. Daylight quietly recedes and the growing twilight perfectly contrasts the luminous green lights of the Aurora Borealis . The enchanting colors invite you to marvel at the miracles of Mother Nature that so often act as the inspiration for treasured postcards. With only 12 hours of sunlight, temperatures range from around 43 degrees to the mid-50s. These new, cooler climates encourage Alaska’s famed wildlife to begin preparing for hibernation. Gaze at the water’s surface as thousands of bald eagles congregate to enjoy the final salmon of the season.

Best Month to Take an Alaska Cruise

What is the best weather for an Alaska cruise? Temperatures can vary anywhere between 30 to 80 degrees throughout the summer travel months – inviting guests to layer on the sweaters and windbreakers as weather can be unpredictable. So, the best month to travel to the Great Land depends on what you want to do. For the fishing aficionado, consider May when king salmon reach their greatest appearance. If you prefer to explore the lush scenery by foot, wait until June when the sun has overcome the frosty terrain of the Inside Passage and trails are primed for adventures. Regardless of which month you choose to explore Alaska, you’ll encounter iconic marine life and embark on heart-stirring adventures when you set sail with Princess.

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Alaska Cruise Weather (Month by Month Guide)

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You’re not alone if you’re worried about how cold it gets in Alaska or which month is best to avoid the rain. The weather in Alaska is unpredictable and can change at a moment’s notice.

It’s not uncommon to wake up to a hot sunny day, only to find it cold and raining 10 minutes later.

We’ve put together this Alaska cruise weather guide to help you find the best time to cruise to Alaska .

Table of Contents

Alaska Cruise Weather by Month

The Alaska cruise season generally runs from May to September, with occasional cruises in April and October.

The below chart shows the Alaska cruise temperatures you can expect on the inside passage, along with rainfall and hours of daylight:

Alaska Cruise Weather in May

• Highs : 55°F
• Lows : 40°F
• Average Rainfall : 3.48 inches
• Hours of Daylight : 16.5 hours of daylight

Many cruise ships begin their summer deployments to Alaska in May before peak season begins in June.

The Alaska cruise weather in June is fairly cool, but it has the least amount of rainfall during the Alaska cruise season. You can expect Alaska cruise temperatures in May to have lows of around 40 and highs of around 55 degrees Fahrenheit.

May is one of the best times to visit Alaska for dry weather, fewer crowds, and lots of wildlife.

During May, you’ll find several whale species along Alaska’s inside passage. By this time of the year, most of the whales will have completed their migration from the warm waters of Mexico to Alaska, where they will spend the summer.

Spring is also the time to spot newborn wildlife.

You can expect to see lots of snow-capped mountains, and there are fewer insects and mosquitos.

Alaska Cruise Weather in June

• Highs : 60°F
• Lows : 45°F
• Average Rainfall : 3.36 inches
• Hours of Daylight : 18.1 hours of daylight

Early June is when the Alaska cruise season kicks into high gear. The warming weather allows cruise ships to travel through the Arctic waters providing unique opportunities for passengers.

The Alaska cruise temperature is warmer in June, with lows of 45 and highs in the low 60 degrees Fahrenheit. Make sure to pack insect repellant when you visit Alaska in June, as mosquitos and other insects can become a nuisance.

The warm weather makes it one of the best times to witness the calving of glaciers.

You can expect 18-20 hours of daylight in June, providing lots of time to enjoy the Alaskan wilderness and abundant wildlife.

June is one of the best months for wildlife sightings, with caribou, black bears, mountain goats, moose calves, and even polar bears out and about.

Alaska Cruise Weather in July

• Highs : 65°F
• Lows : 50°F
• Average Rainfall : 4.14 inches
• Hours of Daylight : 17.3 hours of daylight

July is the peak season for Alaska cruises and provides the best Alaska cruise weather and wildlife opportunities. This month has some of the warmest weather, longest daylight hours, and the largest number of tourists.

Temperatures in July average from the high 40s to 65 degrees Fahrenheit.

The warm weather and long hours of sunlight mean you’ll want to pack sunglasses and sunscreen. You should still wear layers when visiting the port, but if you’re planning active shore excursions like hikes or glacier walks, you’ll want to stick with lightweight clothing.

July is an ideal month to visit for salmon fishing, cultural festivals, bear viewing, and small-town exploring. With the popularity of July cruising, cruise prices are at their highest.

Despite having the best weather, Alaska’s weather in July is very unpredictable. You’ll want to pack for all kinds of weather and wear a lightweight rain jacket.

Alaska Cruise Weather in August

• Average Rainfall : 5.37 inches
• Hours of Daylight : 15.2 hours of daylight

August is when the Alaska cruise season begins to wind down. During this month, you can expect the weather begins to cool, higher rainfall, and gorgeous fall landscapes.

You may be able to find some deals towards mid-August, but expect full fares for the most part.

The chance of rain during this month is over 50%, so you’ll want to pack plenty of waterproof gear – including waterproof shoes and wool socks.

Alaska Cruise Weather in September

• Average Rainfall : 7.54 inches
• Hours of Daylight : 12.4 hours of daylight

As school returns to session, cruise prices dip and provide travelers with last-minute bargains to take an Alaskan cruise.

The temperatures in September are slightly cooler, with highs of 55 and lows around 40 degrees fair height. September is also the rainiest month of the cruise season. So be prepared to pack lots of rain gear.

September also sees fewer crowds than in the summer. However, the shoulder season has become more prevalent in recent years, making great deals harder to find. Knowing when to book your cruise can help you save money on your trip.

Due to the shorter daylight hours, September provides the best opportunity to see the Aurora Borealis from an Alaskan cruise.

Fun Alaska Weather Facts

• The coldest recorded temperature in Alaska is -79.8° F (-62° C) at Prospect Creek on January 23, 1971. It also holds the record as the coldest recorded temperature in the United States
• The hottest recorded temperature in Alaska is 100° F (38° C). The temperature was recorded on June 27, 1905, in Fort Yukon
• Juneau, Alaska, is the cloudiest place in the US, with only a 30% chance of seeing the sun.
• 1952-1953 set the record for most snowfall in a year with 971.5 inches of snow.
• Yakutat, Alaska, holds the record as the rainiest place in the US, with an annual rainfall of 160 inches each year.
• Southeast Alaska is home to the Tongass National Forest, the largest temperate rainforest in the world.

Final Thoughts

Alaska cruise weather is unpredictable. The weather conditions can change several times throughout the day, which is why it’s best to pack plenty of layers and a lightweight raincoat.

The best time to cruise Alaska for good weather is between late June and early July. The summer months have the warmest temperatures and the least amount of snowfall.

Not to mention you’ll have a better chance of seeing humpback whales, king salmon, bears, moose, and bald eagles.

• Climate for Juneau, Alaska . Climate in Juneau, Alaska. (n.d.). Retrieved November 4, 2022, from https://www.rssweather.com/climate/Alaska/Juneau/
• Alaska Weather & Climate: Temperature Chart, daylight & more . ALASKA.ORG. (n.d.). Retrieved November 4, 2022, from https://www.alaska.org/expert-advice/weather-climate
• Alaska Weather . Travel Alaska. (n.d.). Retrieved November 4, 2022, from https://www.travelalaska.com/Plan-your-Trip/Planning-Tools/Alaska-Weather
• Amazing Alaska Facts – A Land of Extremes . AlaskaKids. (n.d.). Retrieved November 4, 2022, from http://www.alaskakids.org/index.cfm/know-alaska/Alaska-Quick-Facts/Land-of-Extremes

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Alaska Cruise Weather: May-July Overview

Erica Silverstein

• February 8, 2021
• 2.2K shares

Alaska is known for its unpredictable and often erratic weather, so many travelers hesitate over which month to book their sailing. 

While winter months carry a certain magical allure, most opt for spring or summer trips due to vibrant landscapes, extended daylight hours, and milder temperatures. 

It’s also during this period that travelers can indulge in fishing and wildlife-viewing opportunities.

Check out our guide to Alaska cruise weather for May, June, and July. In addition to monthly stats, discover the other seasonal variations that can help you pick the perfect time to cruise. 

Alaska Cruise Weather: May

In May, Alaska cruise temperatures average between 40 and 55 degrees Fahrenheit. 

May tends to be slightly rainier than June and July, with a slight chance of snow earlier in the month. 

Ketchikan, a popular stop for cruise ships, is one of the rainiest places in North America. It averages about 9.5 inches of rain in May. So if you’re cruise includes a visit to Ketchikan, it wouldn’t hurt to pack your rain gear. 

Ketchikan averages 16 hours of daylight in May; you’ll get even longer days as you travel north to Anchorage and still more if you take a cruise tour up to Fairbanks. 

However, daylight hours in May are a few hours shorter than what you’ll experience if you travel around the spring equinox in late June. 

Expect to see plenty of snow-capped peaks in May. If you travel up into the hills or mountains on a shore excursion, it’s common to find snow still on the ground. As such, you’ll want to pack waterproof hiking boots and warm, waterproof layers (don’t forget gloves and hats) to handle any wet or chilly spring weather. 

Mosquitos aren’t a problem in May. They’re in the summer, so you don’t have to worry about pesky insects while enjoying your vacation. 

If you’re planning a cruise tour to Denali National Park and Preserve, it’s worth noting that the bus service doesn’t begin until late May. The road through the park is only partially open until early June. 

For nature lovers, you’ll be glad to know that May marks the beginning of the salmon-fishing, whale-watching, and wildlife-viewing seasons. 

Although you can spot whales and go fishing any time during the Alaska cruise season, late May and early June are considered the best for seeing mammals because this is when moms and babies search for food. 

If budget is as big a concern as Alaska cruise weather, May is one of the cheapest months to sail due to shoulder-season discounts. 

READ MORE:  Alaska Inside Passage Cruises: What You Need to Know

Alaska Cruise Weather: June

If you’re planning an Alaska cruise in June, temperatures average a low of 45 and a high of 62. 

June is tied with July as the least rainy month, with Ketchikan receiving an average rainfall of less than 7.5 inches.

Alaska cruise weather in late June is some of the best, with 18 hours of daylight and plenty of sun. If you’re lucky, it might even get warm! 

With drier ground in June than in May, Alaska cruisers can start to hike in earnest. 

Whether on your own or with a guide, be sure to pack appropriate gear, such as backpacks with bear bells, water bottles, snacks, and—most importantly—bug spray. The mosquitos start being a nuisance in June. 

For other shore excursions, layering is your best bet. You might need a fleece jacket in the morning but find yourself stripping down to a T-shirt by early afternoon. A packable rain jacket is always good to have on hand since you never know when you’ll get caught in a summer squall. 

The warmer Alaska weather makes June (and July) the best times to see calving glaciers during scenic cruise days. 

June is also one of the best months for whale-watching; late June and early July are the best times for bear-spotting excursions. 

Because of the fine Alaska weather in late June, it’s an excellent time to plan a cruise tour to Denali. The roads are open, days long and dry, and there’s an increased chance of seeing active wildlife.

Cruise fares in June will be higher than in May but better than in the prime summer months.

Alaska Cruise Weather: July

July offers the best Alaska cruise summer weather. It has the least rain (less than 7.5 inches in Ketchikan), long days (17 to 18 hours of daylight), and a warm climate. Temperatures average a low of 48 and a high of 65.

Pack your sunglasses, sunscreen, and your bathing suit for a top-deck dip after your shore tour. Despite the positive forecast, you’ll still want to pack light layers and rain gear that you can don for glacier viewing or visits, forested hikes, or the always-possible rain shower.

Fishing enthusiasts will do their best cruising in July since most types of salmon are running during this month. As with June, it’s an ideal month for wildlife viewing, whether you seek out bears, moose, or Humpback whales.

The glaciers along your route will be cracking like mad, so make sure your July cruise swings by Hubbard Glacier, Glacier Bay, or other scenic cruising destinations. 

You’ll have the full range of cruise tour destinations open to you if you travel in July. But be warned: Cruise fares average the highest this month because the Alaska cruise weather in July is so nice, and more families are traveling because school is out for the summer.

READ MORE: Visiting Denali National Park and Preserve in Alaska

Frequently Asked Questions

What is the best time to cruise alaska .

The answer entirely depends on your travel goals.  In general, the best time to cruise Alaska is from July to September due to milder weather and longer daylight hours. During these months, tour destinations and attractions are open and fully operational, so you can enjoy the full Alaskan experience. 

However, May and June also come with their own perks. For one, they’re excellent months for wildlife viewing. The landscape becomes alive with hundreds of migratory birds, and you’ll have a good chance to spot bears, whales, and other wildlife. 

Furthermore, May and June bring competitive pricing for cruises compared to the peak season in July. This can be advantageous for budget-conscious travelers. 

What is the best time of year to see the northern lights in Alaska cruise?

Northern lights in Alaska usually appear during the aurora seasons, which typically fall in April, August, and September. It’s less likely to occur between May and July due to the extended daylight hours and the midnight sun

Can I still see glaciers during an Alaska cruise from May to July?

Yes! In fact, most glacier excursions are best done in summer and early fall months, which coincidentally falls between May and July and extends till September. Glacial activities, such as calving, are more pronounced during these periods due to warmer temperatures.

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Cruise Tips for Alaska Weather: Month by Month

If you’re thinking about planning a summer cruise , Alaska may be the perfect destination for you. The Alaskan cruise season lasts from May to October, and the warmest months for travel are typically June, July, and August. Alaskan cruises may seem suited only for people who like extreme weather, but the truth is that the weather in Alaska varies widely based on the region.

Here’s what you can expect each month on your upcoming Alaska cruise along with what you really need to pack.  

Ready to start planning? Explore all Alaska cruises .

Alaska Cruise Weather in May

May brings warmer weather within the cities and towns of the Alaskan inside passage. While it can be freezing cold at times, the weather can also be pleasantly cool. The low temperatures typically range from the mid-thirties to the low forties Fahrenheit, but the highs can get up to the upper fifties.

This month also experiences near constant cloud cover with a good chance of rain on any given day. Travelers get at least fifteen hours of daylight and twilight in May, providing more time for whale watching and other outdoor activities. With low wind speeds, cold temperatures, and precipitation, travelers may want to pack plenty of knit sweaters, a jacket, warm pants, and waterproof boots or shoes.

Alaska Cruise Weather in June

Most of the month of June in Alaska is either cold or pleasantly cool with very cold temperatures being less frequent than in May. The lows can be as low as forty-three degrees Fahrenheit, and the highs can get up to the sixties on average.

Cloud cover and precipitation conditions from May persist throughout June and July, and wind speeds remain low as well. Layers are essential for this type of fluctuating weather, and travelers should be sure to pack waterproof jackets and shoes for rainy moments, cardigans or light sweaters, and other warm clothes like jeans, long skirts, and tights.

RELATED CRUISES: 7-Day Alaska Cruise: Glacier Bay, Skagway & Juneau 16-Day Hawaii Cruise: Skagway, Kauai & Juneau 7-Day Alaska Cruise: Dawes Glacier, Juneau & Ketchikan

Alaska Cruise Weather in July

July is known as the hottest month in this section of Alaska with the hottest day of the year falling on July 9th. Temperatures range on average between fifty and sixty degrees with mostly cool afternoons and evenings and chilly mornings and mid-day hours.

The late nights and early mornings can be very cold, but these are also the hours when most people are asleep in their cabins. Travelers cruising to Alaska in July should be sure to pack plenty of layers along with some waterproof outerwear, but they should pack light, removable layers to adjust to the warmer temperatures of the afternoons.

Alaska Cruise Weather in August

August brings a gradual decrease in temperatures again, but it is still one of the hottest months of the year in this region. Temperatures during this month usually range from the mid-forties to the low sixties, and days are typically cool or chilly.

Like July, nights and early mornings can be very cold, so late nighters and early risers should be prepared to bundle up for icy temperatures. Plenty of layers are also essential in August, and travelers should be sure to pack waterproof jackets, shoes, and bags as August and September are among the rainiest months of the year.

Alaska Cruise Weather in September

September is one of the last months of the cruise season in Alaska and it is also one of the coldest, with temperatures staying in the low to high forties on average. As the month advances, the temperatures drop lower and lower, and the nights and early mornings can be bitterly cold.

The abundant cloud cover and frequent rain make the landscape all the more beautiful, but visitors should dress properly for a better overall experience. Travelers still get at least twelve hours of sunlight for excursions and deck activities, but they should pack thick pants, knit sweaters, and insulated shoes to combat the cold along with waterproof rain gear.

Alaska Cruise Weather in October

October in Alaska can see lows can be as low as 28° Fahrenheit, and the highs can reach up to 40° Fahrenheit. You can also expect more precipitation, which can result in some snowy weather.

Both September and October are ideal times to see the stunning Northern Lights, otherwise known as aurora borealis displays. The best times to look is between Midnight and 2am.

While Alaska might be colder than other summer vacation spots, it offers unique experiences that can’t be found anywhere else. These include sightings of wild orcas , sea lions, and humpback whales and riding one of the world’s longest ziplines.

You’ll also have a chance to visit the incredible Butchart Gardens, witness glaciers, pan for gold , hike through temperate rainforests, and much more. If you’re prepared for the weather and pack the right attire for your destination, nothing can get in the way of having a good time.

EDITOR'S NOTE: This article was originally published on May 16, 2018. It has been updated to show related content and itineraries.

The Best Time to Cruise Alaska: A Month-by-Month Guide

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Choosing the best time of year for an Alaskan cruise can be challenging. From month to month, the weather, wildlife, and your chances of viewing the mesmerizing Northern Lights vary greatly.

Since I grew up in Alaska, I’m a fan of just about everything in the Land of the Midnight Sun. I also know that your experience can vary widely depending on the month you choose to visit Alaska.

Which raises the question…

When is the Best Time of Year to Cruise to Alaska?

The abbreviated Alaskan cruising season goes from May to September. Although you’ll find the highest number of travelers visiting Alaska during the peak cruising (and fishing) months of July and August, the ideal time for your Alaskan cruise depends most on your personal priorities.

In this post, I share a month-by-month guide about the best time of year for an Alaskan cruise. I’ve included tips on the weather, wildlife, daylight, and the general experience you’ll have each month of the Alaska cruise season to determine when to set sail for the 49th state.

Alaska Cruise Season

The cruising season to Alaska is shorter out of necessity. Weather, ocean conditions, and limited sunlight make winter cruising to Alaska impossible.

For major cruise lines, the Alaska cruise season runs between May and late September, including Viking and Disney.

Many cruise lines also have limited early cruise ships departing for Alaska in April. Norwegian Cruise Lines has the first departures of the season in early April from Seattle.

Holland America Princess, and Royal Caribbean have Alaskan Inside Passage cruises departing from Vancouver at the end of April. Carnival has 14-day Alaskan cruises departing from Seattle and Long Beach in late April.

This post contains affiliate links which means if you click and buy that I may make a commission, at no cost to you. Please see my disclosure policy for details.

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Alaskan Cruise Month-By-Month Guide

What to Expect on an Alaskan Cruise in April

Spring in Alaska is a unique experience. The benefits of cruising in April include less expensive pricing, fewer tourists, and less crowded ports. Here is a breakdown of other important considerations for an April Alaskan cruise.

Locals typically call the months of April and May “break-up” because the snow and ice begin to break apart and melt after the long winter. What does this mean for tourists? Snow and mud! In April, mountains will still be snowy, and high temperatures will max out in the upper 40s for most cruise ports.

April marks the beginning of the dry season for Southeast Alaska. However, it’s important to remember that this area is part of the world’s largest temperate rainforest.

The average rainfall in Juneau during the month of April is 2.77 inches. Although the rain isn’t convenient, it is the reason for the lush vegetation you enjoy.

Be sure to pack high-quality rain gear for excursions along with warm, layered clothing and a hat and gloves. Many early spring cruisers also pack a winter coat.

Because of its latitude, Alaska experiences extremes in daylight in the summer and darkness in the winter.

On Winter Solstice (December 21 or 22), the state breaks out of its winter hibernation and begins gaining a few minutes of sunlight each day. By the time Summer Solstice occurs (June 20,21, or 22), travelers to Juneau, Alaska, a common port, will experience a day with 19 hours of sunlight.

In April, towns along the Inside Passage will have just over 15 and a half hours of sunlight and will be gaining daylight every day.

Since the skies do still get dark during this month, there is a slight chance that you’ll be able to view the Northern Lights on an Alaskan cruise in April. Peak viewing of the Aurora Borealis happens between November and March, but on a clear night with lots of solar activity, you have a shot at this once-in-a-lifetime viewing experience.

When it comes to Alaskan cruises, balcony cabins come at a premium. You can save money by opting for an inside or an oceanview cabin. However, the views and ability to go sightseeing from your room on ocean days make the higher price worth it.

If you purchase a balcony cabin, you can take advantage of the long days in the Land of the Midnight Sun. As your ship reaches the Inside Passage, the early morning views outside of your room are breathtaking.

There are plenty of animals to see while cruising to Alaska. Arguably, the biggest draw is the marine animals, with opportunities to see pods of humpback whales, gray whales, orcas, sea lions, sea otters, and more.

There are also amazing birds, including bald eagles and land animals like mountain goats, Dall sheep, and brown and black bears.

Although gray whales are more elusive than their humpback cousins, April is your best chance to spot them as they migrate from their winter breeding grounds in Baja, Mexico, to feed in the waters inside the Interior Passage of Alaska.

Orca whales (which are actually members of the dolphin family) are a fairly common site on an Alaskan cruise. “Resident” orcas (who stay near shore and feed on fish) are easy to spot and fun to watch from the cruise ship or on a whale-watching excursion.

General Experience:

Choosing to cruise in the early spring of Alaska will impact your experience. Less travelers might sound appealing, but many port towns aren’t fully “tourist operational” until late June when summer workers start to arrive.

An April sail date is one way to save money on your Alaskan cruise. Just expect cooler weather, fewer wildlife viewing opportunities, and less active ports with some shops that are still shuttered.

Related: What to Pack for an Alaska Cruise (clothing, gear & essentials)

What to Expect on an Alaskan Cruise in May

Cruising to Alaska in May is still considered early in the season. As the month progresses, temperatures rise slightly, and daylight hours increase.

While prices in the early season are generally less expensive, your experience during a May cruise will look different from during the high season in July and August. Here is what you’ll find in Alaska in May.

Alaska will still be emerging from winter during May. The high temperature in May in the capital city of Juneau, averages in the mid-50s, with lows in the 40s.

In most Alaska ports, rainfall occurs about 15 days of the month. You’ve got about a 50/50 chance of getting rained or snowed on during excursions. You’ll be very happy if you purchase a quality raincoat and pack clothing you can add or remove in layers.

A hat, gloves, and a winter coat would be a good idea to pack for an Alaskan cruise, especially if you depart in April, May, or September.

Alaska is still gaining sunlight as the Summer Solstice approaches, so you’ll experience longer days during your May cruise.

At the beginning of the month, sunrise in Juneau begins at 5:00 a.m., and sunset is at 8:47, resulting in 15 hours and 47 minutes of daylight. As May closes, the days are even longer, with the sun rising in Juneau at 4:00 a.m. and setting at 9:49 p.m. (almost 18 hours of daylight!).

Another thing to keep in mind when deciding the best month for your Alaskan cruise is wildlife viewing opportunities.

Salmon usually begin their long journeys home to spawn in May, but they come in different waves or “runs.” You might have a chance to view bear feeding on salmon this early in the springtime, but your chances are better later in the summer.

There are exciting marine animals that you can see this early in the Alaskan springtime.

Alaska’s Stellar sea lions are an impressive sight for cruisers. Because they don’t migrate, you have a great chance of viewing these 1000+ pound, 10-foot-long animals on rocks near the shorelines as you cruise. Be sure to listen for their signature roar.

There is also potential for viewing orcas, gray whales, and walruses.

May is an excellent cruising month for birdwatchers as migratory songbirds start to arrive in Alaska and seabirds gather in their nesting spots or rookeries. Keep an eye out for my favorite, the ever-adorable puffins, Arctic terns, cormorants, and bald eagles.

May is a practical choice for Alaskan cruisers who are on a limited budget but want to have slightly warmer and drier weather and more chances to see wildlife. Your views will likely include snowy mountains, but they are gorgeous nonetheless.

Expect less activity and fewer shop openings in some smaller port towns in May since most summer workers are in college and won’t arrive until June.

What to Expect on an Alaskan Cruise in June

Things start hopping in Alaska in June. Summer workers (typically college students) begin to arrive for the peak tourist season, and shops and restaurants open for the summer.

As the temperature warms up, the snow on the ground in port towns melts, and more wildlife begins emerging from their winter dens.

Because school is often still in session for younger children in May and June, taking an Alaskan cruise in the early Spring/Summer is a good choice if you prefer fewer children on board.

In the Lower 48, temperatures in June start to heat up, not so much in Alaska.

While temperatures are warmer and the snow is typically gone at lower elevations, the highs in Juneau average in the low 60s, with lows in the upper 40s.

Temperature is relative, so don’t be shocked if you see an Alaskan sporting shorts and a tank top in June. The 60s can feel downright tropical after winter temperatures in the 20s and 30s.

Rainfall slows down a bit in June, with about 13 days of the month having some precipitation.

Packing-wise, you’ll still want to bring a raincoat, but you can probably leave your winter coat home if you are cruising in June.

It is remarkable to experience Alaska on or around the summer solstice. The amount of daylight increases as you travel northward, but even Juneau’s 19-hour solstice day, with the sun rising at 3:48 a.m. and setting at 10:09 p.m., is a fantastic experience.

If you are in port, you’ll get to see how Alaskans take advantage of the Midnight Sun with locals out biking, hiking, and fishing at all hours of the night.

You’ll also have more hours to look for wildlife from your room window or veranda.

If you have an exterior room and are sensitive to light while sleeping, a sleeping mask will help you rest during these long days.

Humpback whales are the most commonly seen whale in Alaska. They begin migrating from Hawaiian waters in the springtime to feed in the nutrient-rich Alaskan waters.

While it is possible to see humpbacks during the entire cruise season (April-October), your best bet for whale watching will be the months of June, July, and August. They are quite an awe-inspiring sight to see as they travel in pods, breech, and feed.

This is also the time of year when King Salmon runs both begin and end. If you are an angler, there is nothing like hooking and reeling in a King. With an average size of 24 to 36 inches and weighing 10-50 pounds, you’ll finally have a true fishing story worth telling.

If you cruise to Alaska in June, you can expect warmer and drier temperatures, fewer children onboard, increased wildlife sightings, and more cruise offerings.

June is a smart choice for cruisers who don’t want to travel during peak season but want more opportunities.

Related: What to Wear on an Alaska Cruise (outfit ideas with photos)

What to Expect on an Alaskan Cruise in July

Weather is a pretty big consideration when it comes to booking an Alaskan cruise. Temperatures can be quite chilly on deck and in ports of call. If you have a low tolerance for cold weather, cruising Alaska during the warmest months of July and August is a better choice.

July and August are considered peak seasons to cruise to Alaska for good reason. These are the months when all good things combine to create the optimal Alaskan experience.

That being said, the weather and wildlife in Alaska are notoriously unpredictable. You could book a cruise in July and never get above the 50s. You might take a float plane to see bears and, sadly, not see a single one.

My advice is to pack plenty of warm (and waterproof) layers , expect the unexpected, and find joy in whatever experience you get.

The weather in July only trends slightly warmer than June. The average July temperature in Juneau is 64 degrees, with an average low of 51 degrees.

The dry season ends, and precipitation starts to increase in July. Rain falls on average 14 days of the month. Just remember our earlier reminder that you are visiting the world’s largest temperate rainforest and enjoy the lush greenery.

After the Summer Solstice in June, Alaska begins losing daylight with each passing day. While the days are still longer than those in the Lower 48, they are getting slightly shorter throughout July.

In Juneau, the sun rises at 3:54 a.m. at the beginning of July. By the end of July, it starts rising at 4:45 a.m.

Sunsets move to earlier in the night as the month progresses. The sunset on July 1 in Juneau is at 10:07 p.m., and by the end of July, it is at 9:21 p.m.

Although it is getting darker earlier, solar activity is not at its peak in the summer, so your chances of viewing the Northern Lights in July are slim to none.

July is a spectacular month for viewing wildlife in Alaska. Not only are humpback whales, orcas, sea lions, eagles, and seabirds easier to see as they feast in the nutrient-rich summer waters, but the likelihood of seeing the indomitable Alaskan brown, black, and Kodiak bears increase as they focus on fattening up on migrating salmon.

Small-ship Alaska cruise lines like American Queen Voyages and Uncruise can go further into narrow passages and get closer to shoreline wildlife like Dall sheep and bears.

If bear viewing is high on your bucket list and you are traveling on a bigger cruise ship, look for a float plane excursion that will take you to where the bears feed.

July is filled with opportunities to see the stunning wildlife of Alaska while enjoying milder temperatures.

July also brings the highest number of tourists to Alaska. If you cruise to Alaska this month, you can enjoy more shop and restaurant options in port towns but expect things to be slightly more crowded.

What to Expect on an Alaskan Cruise in August

August is a delightful time to cruise to Alaska. You’ll enjoy wildlife viewing, warmer temperatures, and daylight returns to more typical hours. However, the dry season has ended, so rainfall will begin to increase as the month progresses. 

For cruise itineraries in Alaska, August high temperatures will be somewhere in the upper 50s and low 60s. We’ve reached the pinnacle of summer temperatures, and the rainier season has just begun.

Juneau gets about 17 days of rain in August, so a high-quality raincoat is essential.

With lows in the 50s, you don’t need to pack a winter coat and hat, but be sure to include warm, wicking layers to keep your temperature steady.

By the end of August, the sunrise and sunset times in Alaska are pretty close to “normal” times for most states in the USA. You might feel like you aren’t getting the true Alaskan “Midnight Sun” experience this month. 

In Juneau, on August 31, the sunrise is at 5:52 a.m., and the sunset is at 8:01 p.m.

The loss of daylight does mean you could see the Aurora Borealis while cruising to Alaska in late August. The best time to see the Northern Lights is between late August and April, typically peaking in March.

Unfortunately, seeing this supernal show of sun activity is not a given. Overcast skies are common in Alaska and block the Lights, and the solar activity that creates the phenomenon is unpredictable. You can increase your chance of seeing the Northern Lights by asking crew members if you can get placed on a list that will be notified when, as we say in Alaska, “the lights are out.”

In August, the wildlife can sense that winter is on its way, and activity picks up to prepare for the months of cold, snow, and darkness.

You might see bears that are continuing to fatten up before hibernation. Humpback whales have yet to begin their migration to warmer waters, so you will still be able to see them, especially in early August.

Seabirds will still be feasting on fish. You also might see fuzzy harbor seal pups and sea lion pups (born in June and July) warming themselves on rocks with their mothers. Add high-powered binoculars to your Alaska packing list to ensure that you get to see all of the wildlife possible.

General Experience :

You can’t go wrong with a cruise to Alaska in August. Not only is it your best shot for warmer weather, but you’re also sure to see a good amount of the wildlife Alaska is famous for.

Warmer weather in Alaska also has an unexpected bonus for cruisers in the form of glacial calving.

Glaciers are a natural wonder that no photographs can do justice. Until you have experienced the majesty of an ancient river of ice in an unparalleled blue, it is hard to imagine!

Every Alaskan cruise includes at least one glacier viewing stop. The warmer the weather, the better your chance to view a once-in-a-lifetime occurrence called “calving.” This is when a large chunk of the glacier separates in a giant icy landslide.

Not only is the cracking sound shocking, but the calving also produces a giant wave of water and captivating icebergs. July and August are prime time for viewing glacier calving on an Alaskan cruise.

What to Expect on an Alaskan Cruise in September

April, May, and September are considered shoulder seasons for cruising to Alaska. Shoulder season is the time between peak season and off-season when there are fewer cruisers and lower prices.

A September cruise has its benefits, including less crowding and cheaper prices. However, a cruise this time of year will also slightly decrease your chance of viewing wildlife and make for sleepier ports of call because most summer workers return home for college.

In Alaska, we measure the return to winter by how far up the stalk Fireweed flowers have bloomed. By September, the blooms are most certainly to the top as winter rapidly approaches.

High temperatures in September in Juneau hover around the upper 50s with lows in the mid-40s, though, so it is still an enjoyable time to visit.

Precipitation increases to 19 days of the month, so pack a raincoat with a hood (you’ll be grateful to have it!).

There is a chance you will see some snow, so a winter coat, gloves, and a hat are a smart addition to your packing list.

In September, the scale now tips towards later sunrises and earlier sunsets in Alaska. By the end of September, there are less than 12 hours of daylight in Juneau.

Cruising in September will give you the highest chance of viewing the Aurora Borealis on an Alaskan cruise. You won’t want to miss this indescribable sight, so watch for clear night skies and set an alarm to go on deck (or on your balcony) for potential middle-of-the-night Northern Lights shows.

Gray whales and Humpback whales begin their migration to warmer waters in October and November, so you still have a chance to see them in Alaskan waters in September.

Birds also haven’t started their migration, so you can spot both songbirds and seabirds as you cruise along the coast.

Silver salmon runs are possible in September, but not a guarantee.

September is also an excellent time to witness a towering Alaskan moose. By this time of year, bull moose have a full rack of antlers. With shoulder heights at 6 foot 9 inches and over 1,400 pounds, these massive animals are as dangerous as impressive, so you’ll want to view them from a distance.

Cruising to Alaska in September has many benefits of the peak season (milder weather and good wildlife viewing) with less expensive prices and fewer tourists.

Although the weather will likely include more rain, you have a better chance of viewing the Northern Lights, which might outweigh this drawback.

If your itinerary includes stops in Anchorage, Seward, or Whittier, you might experience rougher seas as you cross the Gulf of Alaska in September.

FAQs About Alaskan Cruises

What is the best time of year to see the northern lights on an alaska cruise.

The peak season to view the Northern Lights or Aurora Borealis is between late August and late April, which unfortunately doesn’t overlap much with the Alaskan cruise season. If the Northern Lights experience is high on your Alaska bucket list, consider a September cruise with more dark nighttime hours and increased solar activity.

How far in advance should you book an Alaskan cruise?

If you are hoping to travel during peak Alaskan cruise season (July and August), you should plan on booking your Alaskan cruise at least one year in advance. The farther in advance you can book your Alaskan cruise, the more options you will have for cruise dates, itineraries, and cabin amenities.

Are the seas rough on an Alaskan cruise?

When traveling from Vancouver in the Inside Passage of Southeast Alaska, the waters are mostly protected and provide smooth sailing. If ports include Anchorage, Seward, or Whittier, cruise ships must cross the Gulf of Alaska, which has notoriously rougher waters. This is especially true after Labor Day.

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Final Thoughts on the Best Time of Year for an Alaskan Cruise

Peak cruising months, July and August, are the best time of year to cruise to Alaska. During these months you will have the warmest weather and the greatest chance to see wildlife.

If you want to see the Northern Lights, September is the best option for your cruise to Alaska, although sightings are not guaranteed.

Are you thinking of taking an Alaska cruise? Please let me know in the comments below.

Happy Cruising!

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Author Bio:

Stephanie Yrungaray grew up in gorgeous Eagle River, Alaska and now calls Utah her beUtahful home. She enjoys traveling and exploring with her husband and five kids any way she can, from cruising to RV camping and everything in-between! When she’s not out exploring, you’ll find her writing about travel, finances and parenting as well as gift ideas on her website,  www.TheGiftyGirl.com . 

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