We’re calling it now… this might be our most-read blog. Ever.
Right up there with “What ship is right for me?” and “Is a cruise tour worth it?”, this is one of the most common questions we get when helping clients prepare for Alaska:
“What do I wear?”
It’s a great question. And since Alaska has some of the most unpredictable cruise weather on the planet, this blog will walk you through some of the highlights of what to pack (and what to skip) so you can enjoy your trip no matter the forecast.
Why Alaska Cruise Weather is So Unpredictable
Let’s cut to the chase:
There’s always a chance of rain. Always.
Sure, it can be chilly (and there’s nothing worse than being cold and wet) but the biggest thing you should plan for? Rain. Lots of it.
Most Alaska cruises sail through Southeast Alaska, which sits squarely inside the Tongass National Forest, the largest national forest in the U.S. It’s also a temperate rainforest, which means lush green landscapes and frequent drizzle are part of the deal.
Some areas receive over 100 inches of rain per year, with Ketchikan averaging 140–160 inches annually. That’s a lot of moisture.
Average High Temperatures for Alaska Cruise Season
These are the highs, not the lows:
- May: 55–60°F (13–16°C)
- June: 60–65°F (16–18°C)
- July: 62–66°F (17–19°C)
- August: 60–64°F (16–18°C)
- September: 55–60°F (13–16°C)
Sunny, warm days do happen (we’ve seen it hit 80°F in Juneau), but those are the exception, not the rule.
#1 Rule: Stay Dry. #2 Rule: Dress in Layers.
The single most important thing you can do to enjoy your Alaska cruise?
Stay dry.
Even if the temperature isn’t terrible, being damp will ruin your fun faster than anything. Come prepared for the rain, and you’ll be able to enjoy the experience, no matter the forecast.
After that? Layer up. The weather can change quickly, so wearing breathable, removable layers will help you stay comfortable without packing your entire closet.
What to Pack for an Alaska Cruise (Weather Edition)
Here’s our real-world, tested list of what to bring (and what to leave behind) when packing for Alaska’s weather.
✅ Rain Jacket: Non-Negotiable
If you only buy one thing for your trip, make it a good rain jacket. Not a cheap one. Not one you “think will be fine.” A great one.
Even if you never wear it again, it’s worth it to protect the investment you’ve made in this trip. Getting rained on with no protection is a recipe for misery. Could you get lucky and not need it? Maybe. But there’s a much bigger chance you’ll need it every day.
🟡 Waterproof Shoes or Boots – Optional
We’ve personally never packed waterproof shoes and never had soaked feet. Why? Because the rain is usually a mist or light drizzle, not a downpour.
That said, if wet feet are your personal nightmare, or if you’re planning on lots of hiking, kayaking, or rugged excursions, you might want to invest in a pair. For casual port visits, though? Probably not essential.
✅ Warm Layers – Yes, You’ll Need Them
Fleece, pullovers, and sweatshirts are a MUST! Bring a warm mid-layer you can wear over a base and under your rain jacket. Glacier viewing days, wildlife tours, and any time on the water call for bundling up.
P.S. We won’t go into it now, but cotton is not always your friend in these situations. Think “breathable” for the most comfortable options.
You might be fine in downtown Juneau with just a light jacket, but up near the glaciers or down on the water? You’ll want layers.
❌ Formal Wear – Not Necessary
Alaska cruises are about nature and wildlife, not black-tie glamour.
Most cruise lines have relaxed dress codes, and very few (we can only think of a couple) require formal attire in Alaska. You’re welcome to dress up for dinner or a family photo, but it’s not expected and certainly not required on most cruise lines (be sure to check suggested attire on the cruise line website if you are unsure).
❌ Umbrella – Leave It Home
“I prefer umbrellas” isn’t reason enough to pack one for Alaska. The mist comes from all directions, and unless your umbrella is a personal dome bubble, it’ll be more hassle than help.
A good rain jacket does a better job, packs easier, and doesn’t blow inside-out with every gust.
🟡 Hiking Boots – Only If You’re Hiking
Planning to hike? Bring them.
Not planning to hike? Not necessary.
That’s it.
✅ Swimsuit – Surprisingly, Yes
Hot tubs and chilly weather are absolute perfection! You might not think of packing a swimsuit for Alaska, but trust us, you’ll want it when that steamy whirlpool calls.
✅ Sunglasses – Always a Good Idea
Even on overcast days, the glare from snowcapped mountains and glaciers can be intense. And if the sun does come out? You’ll be glad you brought them.
Let Us Help You Pack (and Plan) Right
When you book with us, we give every client a packing checklist that helps them prepare for their Alaska cruise. From how to stay warm in Glacier Bay to what to wear for dogsledding on a glacier, we’ve got you covered.
Let us help you plan your perfect Alaska cruise – and make sure you’re ready for whatever weather comes your way.
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Written by: DeWayne Tudor
Photo credit: DeWayne Tudor