Alaska Cruise in May: Weather, Excursions, Pros and Cons

An Alaska cruise in May offers long daylight hours, spring scenery, and snow lingering on higher mountain peaks. It can also mean fewer crowds and lower fares than midsummer, depending on your sailing. But timing within the month matters. Early May can bring a smaller choice of excursions and seasonal services. Later sailings give you more options, especially if you plan to explore inland before or after your cruise. We’ve cruised Alaska in May and explored the state over many years, across different months and seasons. This guide shares our firsthand experience, average port temperatures, wildlife expectations, and practical tips to help you decide if May suits your plans.

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Our Experiences Cruising Alaska in May

We’ve cruised Alaska in May and explored the state by road during this spring transition. Our travels span many years and seasons, giving us a broader perspective on what changes throughout the cruise season.

May stands out for its mix of green coastal scenery and snow lingering in the mountains. We really enjoyed our peaceful, beautiful May cruise. Popular Alaska ports felt less crowded than in summer, although some popular activities weren’t available yet.

However, planning a May trip takes more attention to opening dates. A cruise excursion and an inland attraction may follow very different schedules.

We check each operator’s dates before building our plans around a particular activity. This matters especially when combining a cruise with independent travel before or afterward.

If you’re still choosing your travel dates, our guide to the best time to cruise to Alaska compares the months.

Alaska Cruise Weather in May

May brings cool mornings, milder afternoons, and increasingly long days. At most Alaska cruise ports, average daytime highs reach the mid-50s to around 60°F. Overnight lows usually fall into the upper 30s or low 40s.

However, conditions vary considerably between ports. Skagway and Haines receive much less precipitation than Ketchikan or Whittier. Your itinerary matters when deciding what weather to prepare for.

Average May Temperatures and Rainfall by Cruise Port

Cruise port	Average high	Average low	Average monthly precipitation
Juneau	57°F / 14°C	43°F / 6°C	5.1 inches
Ketchikan	57°F / 14°C	43°F / 6°C	8.7 inches
Skagway	58°F / 15°C	43°F / 6°C	1.1 inches
Sitka	53°F / 12°C	43°F / 6°C	3.8 inches
Icy Strait Point / Hoonah	58°F / 14°C	40°F / 4°C	2.5 inches
Haines	60°F / 15°C	42°F / 6°C	1.9 inches
Seward	53°F / 12°C	39°F / 4°C	3.5 inches
Whittier	53°F / 12°C	41°F / 5°C	14.9 inches

These rounded averages use NOAA’s climate normals. Hoonah provides the weather reference for nearby Icy Strait Point.

Monthly precipitation totals describe the whole month, not what you should expect during a seven-day cruise. Individual sailings can experience sunshine, steady rain, or a mix of both.

Does It Rain on an Alaska Cruise in May?

Yes. May is relatively dry compared with fall at many cruise ports, but rain remains part of coastal Alaska travel. Even a promising forecast calls for a waterproof jacket.

Rainfall also varies sharply along the route. A dry afternoon in Skagway doesn’t tell you what conditions await in Ketchikan.

How Cold Does It Feel on the Ship?

Wind can make an open deck feel colder than the temperature suggests. This becomes especially noticeable while the ship moves or during glacier viewing.

Bring a warm layer, a windproof outer jacket, and a hat and gloves. You may feel comfortable walking around town but need extra layers for several hours outside aboard the ship.

How Much Daylight Is There in May?

Daylight increases noticeably throughout the month. Juneau has roughly 16 hours between sunrise and sunset in early May. By late May, that approaches 18 hours.

These long evenings give you more time to enjoy the scenery from the ship. However, daylight doesn’t change your scheduled departure time from port.

Will You See Snow in May?

Yes. May generally offers more snowy mountain scenery than midsummer, with winter snow still covering higher slopes.

Around Skagway, the White Pass railway takes you toward alpine terrain where substantial snow can remain in May. Juneau’s surrounding mountains can also hold extensive snow, even when downtown and waterfront paths are clear.

On cruises to or from Seward or Whittier, look for snow-covered mountains above Resurrection Bay and Prince William Sound. Glacier Bay also combines glaciers with snowy mountain scenery.

However, you won’t see a winter landscape throughout the Inside Passage. Coastal forests remain green, while snow coverage varies with elevation, recent weather, and your sailing date. Early May generally has more lingering snow than late May.

Early May vs. Late May: What Changes?

An early-May cruise and a late-May sailing can offer noticeably different experiences. Alaska is still moving from spring into its main visitor season.

Early May: More Snow and a Smaller Choice of Activities

Early May can appeal if you value snowy mountain scenery and quieter ports. However, check your must-do excursions before booking the cruise.

Some seasonal tours haven’t started yet. Even when an operator offers May departures, individual routes or activities may begin later. In Skagway, for example, different railway excursions follow different schedules.

Independent hiking also takes more planning. Higher trails can remain snow-covered, while lower routes may be wet or muddy from snowmelt.

Late May: More Services and Easier Land Extensions

By late May, more seasonal businesses and excursions are operating. You also gain longer evenings, although warmer weather and clear skies aren’t guaranteed.

This difference matters particularly if your cruise starts or ends in Seward or Whittier. Late May makes an inland extension more practical.

Denali’s summer bus service begins May 20. Many seasonal hotels, restaurants, and other visitor services around the park also open around this time. Individual opening dates vary.

Denali stays open year-round, but early May offers limited park access and fewer activities. Many seasonal hotels and restaurants haven’t opened yet. We recommend visiting after May 20 for a more complete Denali experience.

Choose Your Dates Around Your Priorities

For a cruise focused on scenery and exploring port towns, early May can work well. Check availability first if particular excursions are essential.

We recommend late May if you want more activity choices or plan to include Denali. Check the dates you’ll actually visit each place, especially when adding a land trip before your cruise.

Once you’ve chosen your dates, use our Alaska cruise planner to plan your route, port days, and excursions.

Pros and Cons of an Alaska Cruise in May

May’s appeal comes from experiencing Alaska before the busiest summer weeks. However, that earlier timing also limits some activities.

Pros of Cruising Alaska in May

• More snowy mountain scenery. Winter snow still covers many higher slopes, adding contrast to the green coastal forests.
• Often fewer crowds ashore. Popular ports can feel quieter than during summer vacation season. However, several ships can still arrive together.
• Potentially lower cruise fares. Some May sailings cost less than comparable midsummer departures. Compare the same route, cabin category, and included extras.
• Long days for scenic cruising. May already offers plenty of daylight, with noticeably longer evenings toward the month’s end.
• Comfortable conditions for exploring towns. Cool weather can suit walking tours and independent sightseeing, provided you prepare for rain.

A lower fare can leave more room for excursions. Our Alaska cruise cost guide explains the expenses to include when comparing sailings.

Cons of Cruising Alaska in May

• Some popular excursions haven’t started. Early departures can offer fewer choices, particularly for activities with shorter operating seasons.
• Limited salmon-focused bear viewing. May comes before the summer salmon runs that support many popular bear-viewing excursions near cruise ports.
• Snow can restrict hiking. A scenic mountain backdrop doesn’t mean higher trails are ready for summer hiking.
• Early land extensions require careful planning. Denali’s limited early-May services can affect lodging, meals, transportation, and activities.
• Cool conditions on open decks. Wind and rain can make extended glacier viewing chilly, even when temperatures ashore feel comfortable.

Is a May Alaska Cruise Right for You?

We recommend May if you enjoy scenic cruising, exploring port towns, and traveling before the busiest summer weeks. It also suits travelers who can adjust their plans around seasonal availability.

Choose your dates more carefully if bear viewing, a particular excursion, or an extensive Denali visit is essential. Late May expands your options, but it doesn’t bring every summer activity into season.

For us, May’s peaceful atmosphere was a major advantage. We enjoyed the trip while accepting that some activities would need to wait for another visit.

Wildlife Watching and Fishing on an Alaska Cruise in May

May offers good opportunities for whale watching and saltwater fishing. However, it’s still early for the salmon runs that draw bears to popular viewing sites near cruise ports.

Whale Watching in May

Humpback whales return to Alaska’s feeding grounds in spring, making whale watching a worthwhile May excursion. Juneau and Icy Strait Point are strong choices for dedicated tours.

Sitka is another excellent option for May whale watching. Tours explore Sitka Sound for humpbacks, with opportunities to spot lingering gray whales during spring. Sea otters and Steller sea lions add to the experience, although sightings vary each day.

You can also spot whales from your cruise ship. However, a smaller excursion boat gives you more time in their feeding areas.

Orcas are possible, too, but sightings depend on their movements. Avoid choosing a sailing date around a promised orca encounter.

Our guide to whales on an Alaska cruise explains where to look and what to expect.

Bear Viewing: Set Different Expectations for May

Bears are active in spring, but that doesn’t make May a reliable month for dedicated bear viewing near cruise ports.

Popular excursions focused on bears catching salmon generally operate later in summer, when fish return to local streams. May usually falls before those viewing seasons.

You might spot a bear along a shoreline or during a road excursion. Treat that as a welcome surprise. If watching wild bears is your main priority, a summer sailing offers much better options.

Can You Go Fishing in May?

Yes. May isn’t too early for all Alaska fishing. Halibut charters and spring king salmon fishing can be options, depending on the port and current regulations.

Sitka is worth considering for saltwater fishing. Ketchikan also offers charters, although spring king salmon restrictions can limit what anglers may keep.

Before booking, ask which species the charter targets on your dates. Also confirm that its departure and return times fit your port call.

For one-way cruises, Seward and Whittier provide additional fishing options before or after your sailing. Allow a separate day rather than squeezing a charter into embarkation day.

Shore Excursions to Consider on an Alaska Cruise in May

For May, we would prioritize whale watching, scenic railway trips, and exploring Alaska’s coastal towns. Fishing is another option, depending on local regulations. Bear-viewing excursions require different seasonal expectations, as explained above.

Our guide to the best Alaska cruise excursions can help you compare activities. For May, always check operating dates before building your day around a particular tour.

White Pass Railway in Skagway

May gives this railway journey a distinctive spring backdrop. As the train climbs above Skagway, green forest gives way to higher terrain with lingering snow.

Check the exact excursion available on your date. The summit trip and longer journeys toward Bennett follow different schedules. Some longer routes don’t begin until late May.

Mendenhall Glacier in Juneau

Mendenhall tours offers glacier views without booking a helicopter flight. You can combine the viewpoints with a walk toward Nugget Falls, depending on trail conditions.

In May, check conditions before choosing longer or higher trails. Snowmelt can leave muddy sections, and snow may remain away from the main visitor area.

Helicopter Tours and Glacier Experiences

A helicopter excursion offers a closer look at Alaska’s icefields and mountain scenery. However, glacier landings and glacier dog sledding are different activities.

Confirm that your chosen tour operates on your sailing date. A helicopter operator may offer glacier flights before its seasonal dog camp opens.

Flights also depend on visibility and weather. Have another activity in mind if your excursion is canceled.

Cultural Sites and Independent Port Walks

May’s quieter atmosphere can make independent sightseeing particularly enjoyable. Explore Skagway’s historic streets, Ketchikan’s Creek Street, or Sitka’s waterfront and historic sites.

These options also provide flexibility when weather changes. Check seasonal opening hours for museums, cultural attractions, and guided programs.

You don’t need to fill every port day with an expensive excursion. We like balancing a few priority tours with time to explore independently.

What to Pack for an Alaska Cruise in May

Pack for cool spring weather, wet port days, and chilly hours watching scenery from the ship. Layers let you adjust without returning to your cabin or carrying a heavy winter coat everywhere.

For May, we recommend these essentials:

• A warm fleece or insulated jacket. Bring a layer you can wear beneath your outer jacket during scenic cruising.
• A waterproof, windproof jacket with a hood. It helps with both coastal rain and wind on open decks.
• Comfortable waterproof walking shoes. Choose shoes with good traction for wet paths. Hiking boots make sense if your plans include uneven trails.
• A warm hat and gloves. These are especially useful during glacier viewing, early mornings, and boat excursions.
• Long pants and a lightweight base layer. Add the base layer on colder days or for extended outdoor activities.
• Sunglasses and sunscreen. Bright conditions around snow and ice can surprise you, even when the air feels cold.
• A small daypack with rain protection. Carry spare layers, your camera, and other essentials ashore.

Do You Need a Heavy Winter Coat?

For most May cruise activities, a warm midlayer beneath a weatherproof jacket works well. However, consider a warmer insulated coat if you get cold easily or spend long periods outside.

Higher-elevation excursions may require additional gear. Check what your operator provides before packing boots or specialized clothing.

Keep your hat, gloves, and warm jacket accessible on scenic cruising days. You’ll want them nearby when wildlife appears or the ship approaches a glacier.

Our Alaska cruise packing list covers the complete checklist, including cabin essentials and a downloadable PDF.

Alaska Cruise in May: Frequently Asked Questions

Is May a Good Time to Cruise to Alaska?

Yes, especially if you enjoy snowy mountain scenery and potentially quieter ports. Some sailings also offer lower fares than midsummer. However, check your must-do excursions before booking, since operating dates vary throughout May.

Will It Be Too Cold to Enjoy the Outdoor Decks?

You can enjoy the decks in May, but wind can make them feel much colder than port temperatures suggest. Wear a warm midlayer beneath a windproof jacket. Add a hat and gloves for extended glacier viewing.

Are Shore Excursions Available in Early May?

Yes. Early May can offer whale watching, scenic railway trips, glacier flights, and cultural tours. Some glacier dog sledding tours also operate. However, individual operators and railway routes follow different schedules. Confirm availability for your exact port date.

Is May Too Early for Whale Watching?

No. Humpbacks return to Alaska’s feeding grounds in spring. Juneau, Icy Strait Point, and Sitka offer May whale-watching opportunities. Around Sitka, you may also encounter lingering gray whales. Species and sightings vary each day.

Can You See Wild Bears on a May Alaska Cruise?

Yes, but sightings are unpredictable. It’s not a viewing season. You might spot a bear along a shoreline or during an excursion. May generally comes before the salmon runs supporting popular bear-viewing tours near cruise ports. Don’t build your trip around seeing bears catching salmon, it’s too early.

What Should You Wear for a May Port Day?

Start with a long-sleeved shirt, fleece, long pants, and comfortable waterproof shoes. Carry a waterproof jacket with a hood. For boat excursions or colder conditions, add an insulated layer, warm hat, and gloves.

How Cold Is an Alaska Cruise in May?

Average daytime highs at most cruise ports range from about 53°F to 60°F. Mornings and evenings are cooler. Wind can make open decks feel considerably colder, especially during scenic cruising.

Is Early May Too Early for an Alaska Cruise?

No, but you need to choose your activities carefully. Some excursions operate in early May, while others start later. An inland extension requires additional planning because seasonal lodging, restaurants, and transportation may still be limited.

Final Thoughts

We would happily cruise Alaska in May again. We enjoyed having more space to explore popular ports, even with some activities unavailable.

Before booking, check the few experiences that matter most to you. If they operate on your dates, May can be a rewarding choice. If they don’t, consider a later sailing rather than giving up something central to your trip.

Compare Other Alaska Cruise Months

Still deciding when to sail? Explore our monthly guides for weather, wildlife, and planning tips:

• Alaska Cruise in April
• Alaska Cruise in June
• Alaska Cruise in July
• Alaska Cruise in August
• Alaska Cruise in September

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