Pack layers, not bulk—Alaska's weather changes fast
Alaska cruises demand a different packing strategy than warm-water voyages. You will face temperatures between 40°F and 60°F even in summer, sudden rain, and wind that cuts through thin jackets. The key is layering: a moisture-wicking base layer, a fleece or wool mid-layer, and a waterproof outer shell. This approach lets you adjust to the weather without hauling a suitcase full of heavy coats.
Most Alaska cruises run May through September. Summer cruises (June–August) stay warmer but still require rain gear. Shoulder-season cruises (May and September) are colder and wetter. Pack for the coldest day you might encounter, not the average day—you will regret leaving your warm layers behind when you are standing on deck watching glaciers.
Cruise lines typically allow one large suitcase and one carry-on per person. Use packing cubes to compress clothes and keep items organized. Roll rather than fold to save space. Leave room for souvenirs on the return trip.
Key Takeaways
- Layer your clothing with a moisture-wicking base, insulating mid-layer, and waterproof outer shell rather than packing one heavy coat.
- Bring waterproof hiking boots or sturdy shoes with good grip, because shore excursions often involve wet decks, gravel, and uneven terrain.
- Pack a rain jacket and rain pants even in summer—Alaska weather changes within hours and deck time is a major part of the cruise experience.
- Bring binoculars, a camera with extra batteries, and a small daypack for excursions, since wildlife viewing and glacier tours are the main activities.
- Leave formal wear at home unless your cruise line specifies formal nights; most Alaska cruises are casual, and you will not need a tuxedo or evening gown.
Clothing for deck time and excursions
You will spend hours on deck watching for whales, bears, and glaciers. Dress for this: bring two or three pairs of warm pants (fleece-lined or wool), not shorts. Jeans are a poor choice because they hold moisture and stay cold. Instead, pack synthetic or wool pants that dry quickly and insulate when wet. Bring at least four long-sleeved shirts or thermal tops.
For your feet, waterproof hiking boots are essential. Many shore excursions involve walking on wet gravel, slippery docks, or muddy trails. Boots with good ankle support and a grippy sole prevent slips. Bring two pairs if possible—one dries while you wear the other. Pack wool or synthetic socks (not cotton), and bring enough pairs that you can change into dry socks daily. Wet feet in cold weather lead to discomfort and illness.
A warm hat, gloves, and a neck gaiter or balaclava are not optional. Wind on the water makes 50°F feel like 35°F. Bring a hat that covers your ears. Gloves should be waterproof or quick-drying; leather gloves are useless in Alaska. A neck gaiter doubles as a face mask on windy days and takes almost no luggage space.
Rain gear and outerwear
Pack a dedicated rain jacket and rain pants, not a poncho or umbrella. Ponchos blow around on deck, and umbrellas are useless in wind. A rain jacket should be waterproof (not water-resistant), fit over your layers, and have a hood. Rain pants prevent your legs from getting soaked during excursions. Many people skip rain pants and regret it within the first day.
Bring a fleece jacket or wool sweater as your mid-layer. This goes under the rain jacket and provides warmth without bulk. Merino wool is ideal because it regulates temperature and resists odor, but any quality fleece works. Avoid cotton—it absorbs moisture and loses all insulating value when wet.
A lightweight down or synthetic puffer jacket is useful for layering on very cold days and takes minimal space. Some cruises visit Glacier Bay in early May or late September, when temperatures drop below 40°F. A puffer jacket packed flat in a compression bag adds security without taking much room.
Footwear and accessories for the ship
Bring slip-on shoes or sandals for inside the ship and casual dining. Many people wear the same hiking boots all day and then change into comfortable indoor shoes for evening. Pack slippers or lightweight shoes that are straightforward to slip on—you will be in and out of your cabin multiple times daily.
Bring a small daypack (15–20 liters) for excursions. This holds your camera, water bottle, snacks, and extra layers while you are off the ship. A daypack with a waterproof compartment or rain cover protects electronics. Most excursions last four to six hours, and you will want your hands free.
Sunglasses and sunscreen are critical. Glacier reflection intensifies UV exposure, and you can sunburn even on cloudy days. Bring high-SPF sunscreen and reapply often. A hat with a brim protects your face and reduces glare off the water.
Toiletries and medications
Cruise ships provide basic toiletries, but bring your own shampoo, conditioner, and body wash if you have sensitive skin. The ship's supply is often generic and can cause irritation. Pack a small first-aid kit with pain relievers, anti-nausea medication, and any prescription medications you take. Bring extra doses in case your return is delayed.
Seasickness medication is worth considering even if you have never been seasick. Alaska cruises spend days in open ocean, and the Inside Passage can be rough. Dramamine, ginger supplements, or prescription patches all work for different people. Try your chosen remedy before the cruise so you know how it affects you.
Bring lip balm with SPF, moisturizer, and eye drops. The combination of wind, sun reflection, and dry ship air dries out skin and eyes quickly. A small humidifier in your cabin helps, but moisturizer is essential.
Camera gear and binoculars
A good camera is worth its weight on an Alaska cruise. Wildlife and glaciers are the main draw, and phone cameras often fail to capture distant whales or bears. Bring a camera with optical zoom—a mirrorless camera, DSLR, or bridge camera all work well. Pack extra batteries and memory cards; you will take hundreds of photos.
Binoculars are nearly as important as a camera. Many animals are visible to the naked eye but details emerge through binoculars. A compact pair (8x32 or 10x32) is easier to carry than large binoculars and works well for whale watching. Bring them on deck every time you go outside.
Protect electronics from moisture. Pack a waterproof bag or dry bag for your camera and binoculars during rain or spray. A lens cloth and sensor cleaning kit prevent salt spray and moisture from damaging your equipment.
What not to pack
Leave formal wear at home. Alaska cruises are casual. Even ships that designate "formal nights" rarely enforce dress codes, and most passengers wear business casual or nice casual clothing. A tuxedo or evening gown takes up valuable luggage space and will sit unused in your cabin.
Do not pack cotton clothing. Cotton absorbs moisture, dries slowly, and loses all insulating value when wet. Synthetic and wool fabrics dry faster and keep you warm even when damp. This is the single most important packing rule for Alaska.
Skip heavy winter coats. Layering is more effective and takes less space. A single heavy coat cannot adjust to the range of temperatures and activity levels you will experience. Layers let you shed or add clothing as needed.
Leave behind items that take up space without earning their place: hair dryers (ships provide them), multiple pairs of shoes (bring two or three maximum), and books (most ships have lending libraries). Every item in your suitcase should serve a clear purpose.
Packing by cruise month
May and September cruises are the coldest. Pack your warmest layers, including a puffer jacket. Temperatures often drop to 35–45°F, especially in Glacier Bay. Rain is frequent. Bring extra pairs of gloves and hats because you will want to change them when they get damp.
June, July, and August cruises are warmer but still require full layering. Temperatures range from 45–60°F. Rain is less frequent but still common. You can pack slightly lighter mid-layers, but do not skip the rain gear or warm hat. Daylight lasts nearly 24 hours in June and July, so bring sunglasses and sunscreen.
Early season cruises (May) visit fewer ports and spend more time in open ocean, where it is colder and rougher. Pack more seasickness medication and warmer layers. Late season cruises (September) have better weather but shorter daylight hours. Pack a headlamp or small flashlight if you want to be on deck during twilight hours.
Frequently Asked Questions
Do I need to pack formal clothing for Alaska cruises?
No. Alaska cruises are casual, and most passengers wear fleece, jeans, and hiking boots to dinner. Even ships with formal night designations rarely enforce dress codes. Pack one nice casual outfit if you want to dress up for a special dinner, but formal wear is unnecessary.
Can I do laundry on the ship?
Most Alaska cruise ships have self-service laundry rooms available to passengers for a fee (typically $2–4 per load). This lets you pack fewer clothes and wash mid-cruise. Check your cruise line's website for laundry availability and cost before you pack.
What if I forget something important?
Most ports have small shops where you can buy basics like socks, sunscreen, or over-the-counter medications. Prices are higher than on land, so it is better to pack thoroughly. The ship's gift shop also carries some items, though selection is limited.
Should I pack a wetsuit for kayaking excursions?
Only if you book a kayaking tour. Most shore excursions do not require a wetsuit. If you do book kayaking, ask the tour operator what they provide and what you need to bring. Many operators rent wetsuits on-site, so you may not need to pack one.
How much luggage space do I really need?
One large suitcase (24–28 inches) and one carry-on are standard and sufficient for a week-long cruise if you pack efficiently. Use compression bags for bulky items like jackets and fleece. Roll clothes instead of folding to save space. Leave one-third of your suitcase empty for souvenirs on the return trip.