Pack layers, not heavy coats—the Alaskan cruise uniform
An Alaskan cruise means you will move between a warm ship cabin and cold outdoor decks multiple times a day. The single biggest packing mistake is bringing one heavy winter coat instead of layers you can add and remove. You will wear a base layer (thermal underwear or merino wool), a fleece or sweater, a windproof jacket, and sometimes all three at once—then strip down to just the base layer when you go inside.
Temperatures on deck range from 40°F to 60°F depending on the season and which part of Alaska you visit. Inside the ship, cabins and dining rooms stay around 72°F. This constant switching means your clothes need to work in both environments. A heavy parka takes up half your luggage and you will rarely wear it fully zipped.
Bring two pairs of waterproof pants or rain pants, not jeans. Jeans absorb water and stay cold and damp. Waterproof pants dry quickly and pack small. You will be on deck during rain, glacier viewing, and wildlife watching—wet jeans will make you miserable.
Key Takeaways
- Pack thermal base layers, fleece, and a waterproof jacket instead of one heavy coat, because you will change clothes multiple times daily moving between cold decks and warm cabins.
- Bring waterproof pants, not jeans, because denim stays wet and cold while waterproof fabric dries quickly and takes up less space.
- Pack sturdy waterproof hiking boots with good grip for shore excursions and wet ship decks, plus slip-on shoes for the cabin and dining room.
- Bring a small daypack, sunscreen rated SPF 30 or higher, and a hat or hood because Alaska's sun reflects off water and glaciers even on cool days.
- Leave formal wear at home unless your cruise line specifically requires it; most Alaskan cruises are casual, and you will have no use for a dress or suit.
Footwear for wet decks and hiking trails
Pack two pairs of shoes: sturdy waterproof hiking boots for excursions and wet outdoor areas, and slip-on shoes or deck shoes for the cabin and dining room. Hiking boots should have a thick, textured sole for grip on wet metal ship decks and slippery rocks during shore stops. Boots with ankle support help on uneven terrain. Bring them broken in—new boots on a cruise will give you blisters with nowhere to rest.
Slip-on shoes matter more than you think. You will take your boots off dozens of times, and lacing and unlacing takes time when you are cold and wet. Slip-ons let you move quickly between deck and cabin. Bring a pair of wool socks or thick hiking socks to wear with both shoes. Wet feet get cold fast, and good socks make the difference between a pleasant day and a miserable one.
Do not pack sandals or flip-flops as your main casual shoe. The ship decks are wet, the air is cold, and you will be uncomfortable. A pair of lightweight slip-ons works better than open-toed shoes.
What to wear in the cabin and dining room
Most Alaskan cruises are casual. You do not need formal wear unless your cruise line specifically states "formal night" in your booking documents—and most do not. Pack comfortable clothes you can wear multiple days: two pairs of casual pants or leggings, three to four shirts or sweaters, and one pair of shorts for the gym or pool area (the pool is indoors and heated).
Bring one nicer outfit if you want to dress up for dinner, but it should still be casual—a sweater and nice pants, or a casual dress with a cardigan. You will see people in jeans and fleece at dinner. No one expects formal clothing on an Alaskan cruise.
Pack enough underwear and socks for seven to ten days. Laundry service on ships is expensive, and you will go through socks quickly because wet feet mean changing socks often. Bring merino wool socks if you can—they dry faster and stay warm when damp.
Sun protection and accessories you will actually use
Alaska's sun reflects off water and glaciers, and you can burn even on cool, cloudy days. Bring sunscreen rated SPF 30 or higher and reapply it every two hours when you are on deck. A wide-brimmed hat or a hood on your jacket protects your face and ears. Sunglasses reduce glare off the water and protect your eyes during long hours of glacier viewing and wildlife watching.
Pack a small daypack (10 to 15 liters) for shore excursions. You will carry water, a camera, sunscreen, and a light jacket as you move around ports. A daypack is easier to manage than a large backpack and fits under your seat on excursion buses.
Bring a reusable water bottle. The ship provides water, but carrying your own means you stay hydrated on deck without going inside. Dehydration happens fast in cold, dry air, and you might not notice until you feel dizzy.
Toiletries and medications to bring from home
The ship provides basic toiletries, but bring your own shampoo, conditioner, and face wash if you have sensitive skin or a preferred brand. Bring any prescription medications in their original bottles with your name on the label. Bring over-the-counter medications you use regularly: pain relievers, antacids, allergy medicine, and cold medicine. The ship's medical office can provide some items, but it is faster and cheaper to bring your own.
Bring motion sickness medication if you are prone to seasickness. The Inside Passage is calmer than open ocean, but some people still feel queasy. Dramamine, ginger supplements, or prescription patches all work—use what has worked for you before. Do not wait until you are sick to try something new.
Pack a small first-aid kit: adhesive bandages, blister treatment, antibiotic ointment, and pain reliever. Blisters from new boots or minor cuts happen on excursions, and having supplies in your cabin saves a trip to the medical office.
What not to pack and what the ship provides
Leave formal wear, heavy winter coats, and multiple pairs of shoes at home. You will not wear them, and they take up luggage space. Do not pack a hair dryer—cabins have them built in. Do not pack a full-size towel; the ship provides towels. Do not pack a bathrobe unless you really want one; the ship provides them.
Do not pack a large suitcase if you can avoid it. Cruise cabins are small, and luggage takes up floor space. One medium suitcase and a small carry-on work better than two large bags. Roll your clothes instead of folding them to save space.
The ship provides laundry facilities, but they are slow and sometimes crowded. It is cheaper and faster to pack enough clothes for the full cruise than to use ship laundry.
Packing by season: summer versus shoulder season
Summer cruises (June through August) are warmer—expect 50°F to 65°F on deck. You can wear lighter layers and may not need the heaviest fleece every day. Shoulder season (May and September) is colder—expect 40°F to 55°F—and you will wear all your layers more often. Winter cruises (October through April) are rare but very cold; if you book one, pack heavier base layers and a thicker fleece.
Regardless of season, pack the same types of clothes—layers, waterproof pants, hiking boots. The difference is the weight of each layer, not the number of layers. A lightweight fleece works for summer; a heavier fleece works for shoulder season. You will still wear all three layers (base, fleece, jacket) on most days.
Check your cruise line's website for the specific itinerary. Inside Passage cruises (Southeast Alaska) are generally warmer than cruises to the Arctic or Bering Sea. Knowing your route helps you pack the right weight of layers.
Frequently Asked Questions
Do I need a wetsuit for an Alaskan cruise?
No, unless you are booking a special adventure excursion like kayaking or diving. Standard shore excursions like hiking, wildlife viewing, and glacier tours do not require a wetsuit. Wear waterproof pants and good boots instead. If your excursion description mentions water activities, check whether the tour operator provides wetsuits or expects you to bring one.
Can I do laundry on the ship?
Yes, but it is slow and expensive. Most ships have self-service laundry rooms where you pay per load, or you can use the laundry service where staff wash and fold your clothes for a fee. It is usually cheaper to pack enough clothes for the full cruise. If you need laundry, plan ahead—turnaround is often 24 to 48 hours.
What if I forget something important?
Most ports have drugstores and general stores where you can buy basics like socks, sunscreen, or toiletries. Prices are higher than at home, but they are available. The ship's gift shop also sells some items. Plan to buy anything you forget at a port rather than going without.
Should I pack a rain jacket or rain pants?
Pack both if you have space, but prioritize the jacket. You will be on deck in rain during glacier viewing and wildlife watching, and a rain jacket keeps your core warm and dry. Rain pants are useful but less critical. If you can only bring one, choose the jacket and wear waterproof pants instead of rain pants.
How much luggage can I bring on a cruise?
Most cruise lines allow two checked bags per person plus a small carry-on. Check your cruise line's specific policy on their website. Luggage limits vary by cruise line and cabin type. Packing light means you have flexibility if you want to buy souvenirs at ports.