Layered clothing is your foundation — not optional extras

An Alaskan cruise means temperatures between 50 and 65 degrees Fahrenheit in summer, with wind that makes it feel colder on deck. A single heavy coat will trap you indoors. Instead, pack a base layer (thermal underwear or merino wool), a fleece or wool sweater, and a waterproof outer jacket. You will change between these layers multiple times a day depending on whether you are on deck watching glaciers or inside the dining room.

Bring at least three pairs of pants or leggings — one for formal dinners, one for casual days, and one for hiking or outdoor excursions. Jeans take up space and stay wet if they get damp. Wool or synthetic blends dry faster and keep you warm even when damp. Pack two pairs of socks per day of the cruise, plus extras; wet socks are miserable, and laundry service on ships is expensive.

Waterproof outerwear and sturdy footwear prevent most complaints

Rain is common in Alaska, and a cheap poncho or thin rain jacket will fail you. Invest in a waterproof jacket rated for sustained rain, not just a water-resistant shell. Brands like Helly Hansen, Columbia, and REI's house brand are standard on Alaskan cruises because they work. The jacket should have a hood that fits over a hat and pit zips so you can vent heat without removing the whole layer.

Footwear matters more than most people realize. Bring waterproof hiking boots or trail shoes with good ankle support and grip — you will walk on wet ship decks, slippery glacier viewing platforms, and uneven forest trails during shore excursions. Sneakers without waterproofing will soak through. Pack a second pair of shoes for indoor wear and formal dinners. Bring wool socks specifically for hiking; cotton socks cause blisters when wet.

Sun protection is essential even in cool weather

Alaska in summer has 16 to 20 hours of daylight, and the sun reflects off water and snow. Sunburn happens fast, especially on the water. Pack high-SPF sunscreen (SPF 50 or higher) in a size larger than you think you need — you will reapply every two hours if you spend time on deck. Bring a stick sunscreen for your face and ears; it does not wash off as easily as lotion.

A wide-brimmed hat protects your face and scalp. Sunglasses rated for UV protection reduce glare off the water and prevent eye strain during long days of glacier watching. Bring a lip balm with SPF; lips burn faster than skin and the wind makes them crack. These items are available on the ship, but at cruise-ship prices — $8 to $15 for sunscreen that costs $4 on land.

Key Takeaways

  • Pack layers (base layer, fleece, waterproof jacket) rather than one heavy coat, because you will move between cold outdoor decks and heated indoor spaces throughout the day.
  • Bring waterproof hiking boots with good grip and ankle support, because shore excursions involve wet decks, glacier platforms, and forest trails where regular sneakers will fail.
  • Waterproof jackets rated for sustained rain are non-negotiable; water-resistant shells fail in Alaska's frequent rain, and replacing them on the ship costs three times the land price.
  • Pack high-SPF sunscreen and reapply every two hours, because 16 to 20 hours of daylight and reflection off water and snow cause sunburn even in cool temperatures.
  • Bring twice as many socks as you think you need, because wet socks are common and laundry service on ships is expensive.

Medications and toiletries to bring from home

Ship pharmacies stock basics like pain relievers and antacids, but at inflated prices and limited selection. Bring all prescription medications in their original labeled bottles — cruise staff need to see the pharmacy label, not a loose pill bottle. Pack at least a week's extra supply in case your return is delayed. Motion sickness medication (Dramamine, Bonine, or prescription patches) should come from home; the ship sells it but runs out on rough-water days.

Bring your own toiletries if you have sensitive skin or a preferred brand. Cabins have basic shampoo and soap, but they are small bottles and often cause irritation. Deodorant, toothpaste, and any specialty skincare should come with you. Seasickness patches, if you use them, should be in your carry-on before boarding. Bring any over-the-counter medications you use regularly — cold medicine, allergy medication, antacids — because the ship's medical center charges consultation fees on top of medication costs.

Documents and money: what actually gets checked

You need a passport or passport card for an Alaskan cruise, even though some sailings stay in U.S. waters. Bring the original document, not a copy. Cruise lines scan it at check-in and return it to your cabin. Keep it in your cabin safe, not in your wallet, because losing it in port means missing the ship's departure.

Bring a small amount of cash ($100 to $200) for tips, excursions booked in port, and purchases at ports where card readers fail. Most onboard purchases go on your room account, but tipping crew members and paying for unplanned shore activities requires cash. Credit cards work at most ports, but some small towns in Southeast Alaska have limited card infrastructure. Notify your bank before departure that you will be traveling to Alaska; some banks flag cruise charges as fraud.

Camera and binoculars for wildlife and glacier viewing

A camera with a good zoom lens is worth the space. Whales, bears, and glaciers are distant, and your phone camera will disappoint you. A bridge camera (fixed lens, 20x to 50x zoom) or a DSLR with a telephoto lens (200mm or longer) captures detail. If you do not own a good camera, a used bridge camera from a local electronics store costs $150 to $300 and takes better photos than a phone.

Binoculars are equally important for wildlife spotting. A 7x50 or 10x50 pair (meaning 7 or 10x magnification, 50mm objective lens) works well on a moving ship. Cheap binoculars ($20 to $40) blur in low light; spend $100 to $150 for a pair that stays clear in the overcast conditions common in Alaska. Many cruisers rent binoculars on the ship for $15 to $20 per day, which adds up if you cruise for seven days.

Seasickness prevention and deck comfort items

Motion sickness affects 30 to 40 percent of cruise passengers, and Alaska's Inside Passage has rougher water than Caribbean routes. Prescription patches (scopolamine) work better than over-the-counter options, but you need a doctor's prescription before the cruise. Bonine (meclizine) and Dramamine (dimenhydrinate) are available without prescription; Bonine causes less drowsiness. Start medication the night before boarding and continue it daily, not just when you feel sick.

Bring a deck chair cushion or a small blanket if you plan to spend hours on deck watching glaciers. The ship provides deck chairs, but they are hard plastic and get cold in the wind. A cushion that folds small takes minimal luggage space and makes eight-hour glacier days comfortable. Bring a travel pillow for your cabin if you are sensitive to ship pillows; they are often thin and flat.

Frequently Asked Questions

Do I need formal clothes for an Alaskan cruise?

Most Alaskan cruises have one or two formal or semi-formal nights, depending on the line and length. Pack one outfit suitable for the dining room — a dress, skirt and blouse, or dress pants and a button-up shirt. Formal means a tuxedo or cocktail dress on some lines; semi-formal means no jeans or t-shirts. Check your cruise line's dress code before packing.

Can I buy winter gear in Alaska if I forget it?

Ports like Juneau and Ketchikan have outdoor retailers, but prices are 20 to 40 percent higher than on the mainland. A waterproof jacket that costs $80 in Seattle costs $110 in Juneau. If you forget a critical item, you can buy it, but it is cheaper and faster to pack it at home. Smaller ports like Glacier Bay have no retail options.

What should I pack for shore excursions?

Wear your waterproof jacket, hiking boots, and layers. Bring a small backpack (15 to 20 liters) with water, snacks, sunscreen, and a camera. Most excursions last four to six hours and involve walking on uneven terrain. Wear the same boots you tested at home, not new ones that will cause blisters. Bring a dry bag or waterproof pouch for your phone and camera.

Is travel insurance worth it for an Alaskan cruise?

Travel insurance covers trip cancellation, medical emergencies, and missed connections. It costs 5 to 10 percent of your cruise price and is worth it if you have a medical condition, are traveling with young children, or booked a non-refundable rate. If you are healthy and booked a refundable fare, it is optional. Read the policy carefully; some plans do not cover pre-existing conditions.

How much luggage can I bring on an Alaskan cruise?

Most cruise lines allow two checked bags per person plus a carry-on. Checked bags go to your cabin; carry-on bags stay with you during boarding. Pack heavy items (boots, jackets) in checked luggage and keep toiletries and medications in carry-on. Cabin space is tight, so pack efficiently. Rolling bags take up less space than traditional suitcases.