Alaska cruise packing lists exist in abundance on the internet. Most of them are written by someone who has never been on an Alaska cruise, and they show.
"Pack layers!" Yes. Helpful. Which layers, exactly?
"Bring formal wear!" There's one formal night on most sailings. One. And on some ships, it's been relaxed to "smart casual." Packing three formal outfits was not the move.
This is the list I give my clients when they're preparing for an Alaska sailing. It's based on what I actually know about this specific trip — the weather, the ports, the schedule, and the things that matter once you're there.
Alaska Cruise Weather: What You're Actually Packing For
Alaska weather is layered, variable, and frequently wet. Not "might drizzle" wet. "Genuinely pouring rain in Ketchikan while sunny in Juneau the same day" wet.
The strategy isn't to predict the weather. It's to be prepared for any weather at any time.
The temperature range you're packing for: 45°F to 65°F on deck, with wind making it feel 10–15 degrees colder. Some late-July days hit the mid-60s and feel genuinely warm. Some May mornings are damp and 40°F. Often both happen on the same day.
When You're Sailing Matters
May sailings run cooler and damper — lean heavier on wool and rain gear. July is warmest, with longer daylight hours and the best odds of sun. September drops back into the low 50s with more rain; a heavier mid-layer and an extra pair of warm socks make a real difference that month.
Outer Layer — The Most Important Items
Waterproof rain jacket. Non-negotiable. Not water-resistant — waterproof. The difference matters when you're on a whale watching boat in Juneau and it opens up. Bring one you'd actually wear hiking, not the flimsy packable thing in the back of your closet.
Waterproof rain pants. Most lists skip these. Don't. If you're doing a Zodiac tour, whale watching, or any shore excursion in wet conditions, non-waterproof pants soak through in 15 minutes and ruin the experience.
Warm hat and gloves. Even in July. Wind on the deck or the bow of a whale watching boat is cold. A hat and gloves take up essentially no space and matter the moment you need them. Touchscreen-compatible gloves are worth the small upgrade so you can use your phone without taking them off.
Polarized sunglasses. Easy to forget — don't. The glare off the water and glacial ice can be genuinely blinding on a clear day. Polarized lenses make the difference.
Mid-Layer
Fleece or down jacket or vest. This is your warmth layer. It goes under the rain jacket on cold or wet days, or on its own on milder ones. A midweight fleece (Patagonia Synchilla weight, or equivalent) is the right call. Heavier than you'd bring to the Caribbean, lighter than what you'd pack for winter in Illinois.
2–3 long-sleeve shirts or light sweaters. These go under your fleece. Merino wool base layers regulate temperature better than cotton and don't get that wet-dog smell after two wears.
Footwear
Waterproof hiking shoes or boots. Your most important footwear item for shore days. Waterproofing matters (see: Ketchikan rain). Ankle support matters (see: uneven dock surfaces, gravel trails, boardwalks). Do not bring your regular sneakers expecting them to be fine.
One thing most people don't think about until it's too late: break them in before you leave. New boots will destroy your feet on a full-day excursion. Wear them around the house, to the grocery store, on a weekend walk. A few hours of break-in time makes the whole trip better.
Comfortable shoes for the ship. Something you can wear all day in the dining room, at the shows, and on deck without blisters. The ship is a lot of walking.
Optional sandals or flip-flops. For the pool deck on warmer sea days, or just to give your feet a break in the cabin.
What to skip: Heels. They're impractical on a ship (deck surfaces, movement), and the one formal night rarely requires them. A dressier flat handles everything.
Socks — Genuinely Worth a Section of Their Own
I'm serious about this. Socks are the most underestimated packing item on an Alaska cruise.
- Bring 7–8 pairs for a 7-night sailing. They get wet. They don't dry fast in a damp environment. Running out of dry socks mid-trip is a miserable problem with an easy solution.
- Wool or wool-blend, not cotton. Cotton socks hold moisture and stay cold. Wool regulates temperature and wicks. Brands like Darn Tough and Smartwool are worth it.
- Include some tall pairs. If you're doing trails where you might step into mud or pull on rubber boots, tall socks that go over your calves make a real difference.
- Keep a dry pair in your day pack. Swap mid-excursion if needed. This single move can salvage a rainy shore day.
Base Layers
Moisture-wicking underlayers (2–3 sets). Merino wool if your budget allows — it's worth it for a week-long trip. Synthetic if not. Skip cotton base layers entirely; they hold moisture and stay cold.
Clothes for the Ship
Casual clothes for days at sea. Jeans, leggings, casual pants. Alaska sea days are spent on deck watching scenery, not poolside in a bathing suit. Pack accordingly.
One or two nicer outfits for formal/dressy nights. "Formal" on Alaska sailings has been relaxing toward "smart casual" on many lines. Check your specific ship's dress code before packing a tuxedo. A sport coat or a dress and blazer is usually more than sufficient. You do not need multiple formal outfits.
Swimsuit. Yes, still bring one. The indoor pool and hot tubs on Alaska ships see real use — especially on cool, rainy days when the hot tub overlooking the scenery is the best seat in the house.
Workout clothes if you use the fitness center. Sleepwear — don't forget. Basic, but I've seen it happen.
Gear and Accessories
Binoculars. The single highest-impact accessory you will bring on an Alaska cruise. Glacier calving from a distance. Whales at 500 yards. Eagles in trees at portside. Every person without binoculars will be borrowing yours. Compact 10x25 or 8x42 are both good options. Bring the ones you can actually use — not the decorative pair from 2003.
Camera with a zoom lens. Phone cameras have real limitations at distance. If you have or can borrow a camera with a 200mm+ zoom, this is the trip to bring it. The helicopter glacier landing, bear watching at Icy Strait Point, the humpbacks in Juneau — you'll want real zoom.
Power bank / portable charger. You'll be outside all day. Your phone will be running camera and maps constantly. Bring a backup battery.
Power strip or multi-plug extender. Cruise cabins have very few outlets. A family running multiple phones, a camera battery, and a power bank at once will feel this immediately. A small travel power strip fixes the problem.
Dry bag. A proper 10–20L dry bag is meaningfully better than Ziplocs on water-based excursions — Zodiac tours, whale watching boats, kayaking. Brands like Sea to Summit or SealLine are reliable. Keep it in your day pack and your camera, phone, and wallet stay dry no matter what.
Reusable water bottle. You'll want hydration on excursions, and single-use plastics are increasingly frowned upon in Alaska's conservation-conscious ports.
Small day pack or backpack. For excursions. Something comfortable with room for your rain jacket, camera, snacks, and water bottle.
Snacks. Cruise lines don't typically provide snacks, and they matter on long train or bus excursions — especially if you're traveling with kids. A few protein bars or trail mix packs take up almost no space and prevent real problems.
Trekking poles (optional). Worth considering if you're planning serious hikes — Mendenhall Glacier trails, forested boardwalks, anything with uneven terrain. Lightweight collapsible sets fold small enough to pack easily.
Health, Safety & Documents
Seasickness medication. Bring it. The Inside Passage is generally calm water, but some exposed crossings can get rough, and you don't want to be hunting for Dramamine at the ship's pharmacy when you're already green. Bonine or Dramamine — take it before symptoms start, not after.
Sunscreen. Alaska in summer has long daylight hours — 18+ in June. You can absolutely burn. Pack it, and don't expect the ship's store prices to be reasonable.
Insect repellent. June and July are the months to prioritize this — mosquitoes are real, particularly on forested hikes. A 30–40% DEET formula is effective without being overkill. Less critical in August and September, or on town-based excursions.
Sleep mask. Not optional if you're sailing in June or July. Alaska has 18–20+ hours of daylight in peak summer. Your cabin will not be dark. Pack a good sleep mask and actually use it.
All medications, plus a 2-day supply extra. If your connection to embarkation gets delayed, you want coverage.
Passport. Valid well past your travel dates. A printed copy in your bag plus the original on your person.
Travel documents packet. I send all my clients a pre-trip packet with their booking confirmations, excursion reservations, insurance documents, and emergency contacts. Print it. Bring it. It's the thing you're glad you have when something goes sideways.
What NOT to Pack on an Alaska Cruise
- Multiple formal outfits. One is enough. Two if you want options. Three is a waste of suitcase space.
- A heavy winter coat. You're not going to the Arctic. A warm fleece under a rain jacket is sufficient for everything an Alaska cruise involves. Packing a ski parka is overkill and takes up enormous luggage space.
- Dress shoes. A clean pair of leather sneakers or a simple loafer handles any dress code an Alaska cruise requires. Leave the heels at home entirely.
- A full week of different outfits. No one on an Alaska cruise is paying attention to whether you wore that fleece yesterday. Pack light and plan to rewear layers. The ship has laundry service if you want it.
- An umbrella. Awkward on deck, useless in wind, and your rain jacket hood does the job. This takes up space for no real benefit.
Luggage Tips
Cruise staterooms are smaller than you expect. If you're on a smaller ship, storage space is genuinely limited — collapsible bags that can be flattened and stashed under the bed make a real difference. Packing cubes help too. Don't arrive with a bag you can't store.
Excursion Gear: What's Provided vs. What to Pack
Check what your specific excursions require before you pack. Helicopter glacier landings: you're in a controlled environment with provided gear — don't over-pack for this one. Whale watching boats: wet and windy — bring everything. Hiking trails: waterproof boots and layers. White Pass Railroad in Skagway: you're seated on a scenic train — less rugged than it sounds. Most outfitters provide specialized equipment like waders or crampons — you don't need to pack those.
I include excursion-specific gear notes in every pre-trip packet for my clients.
One Last Thing
Binoculars. In case you missed it earlier. Binoculars. Bring them.