What to Pack for an Alaska Cruise in May vs September
May and September bracket the Alaska season with its best prices, and both reward a well-packed bag. The core kit is identical; what changes is whether you prioritize warmth or waterproofing. Most Canadians already own nearly all of it.
The core system for both months
- Base layers: two sets of merino or synthetic tops, plus one pair of thermal leggings.
- Mid layer: a fleece or light down jacket. A second thin fleece gives you options.
- Shell: a genuinely waterproof jacket with a hood. This is the trip's most important item.
- Bottoms: quick-dry or hiking trousers and one pair of jeans for evenings.
- Feet: waterproof walking shoes, broken in, plus wool socks.
- Extremities: toque, gloves and a neck warmer. Deck wind finds every gap.
- Extras: binoculars, sunglasses, sunscreen, lip balm and a small day pack.
May vs September: what to add
| May | September | |
|---|---|---|
| Typical port highs | about 10–14°C | about 10–14°C, cooling through the month |
| Main challenge | Cold, especially near ice | Rain, plus shorter days |
| Add for warmth | Heavier gloves, a second mid-layer | One warm layer for dark evenings on deck |
| Add for wet | Shell is usually enough | Rain trousers, waterproof gloves |
| Eyes and skin | Good sunglasses for snow glare; sunscreen | Sunscreen still, though there is less glare |
| Gear care | Spare camera batteries, which drain in the cold | A dry bag for the camera and phone |
| Footwear | Waterproof shoes | Waterproof shoes plus a second pair while one dries |
| Nice to have | Hand warmers for glacier mornings | A headlamp or small light for aurora watching |
Why May feels colder
Snow sits low on the mountains, mornings are crisp and the air flowing off glaciers is cold. On a clear May glacier morning the deck can feel well below freezing in the wind, which is also when the views are sharpest. See how cold it really is, port by port.
Why September feels wetter
Rain becomes more frequent as the month goes on, and evenings get dark much earlier than in summer. Clear nights are your best chance for the northern lights, so pack enough warm layers to stand outside after dark. For the full seasonal picture, see Alaska weather month by month.
Evening clothes
Dinners are mostly smart casual. One or two outfits that clear "no shorts or ball caps" plus one dressier piece cover the whole week. The Alaska dress code has the detail for formal nights.
What stays home
- Umbrellas: the wind on deck wrecks them.
- A heavy winter parka and snow boots: layers do the job better.
- Several pairs of shoes: two pairs, plus sandals for the cabin, are enough.
- "Just in case" extras: ships have laundry, and your airline's bag allowance is the real limit.
Flying on a basic economy fare from Toronto, Montreal or Winnipeg may mean a fee for every checked bag, so packing light pays off. Luggage rules for flying to a cruise covers the airline side.
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Ask a cruise expert →A final check before you zip it up
Lay everything out by layer and check you could wear it all at once on a cold glacier morning. Then wear your bulkiest layers on the plane, keep the rain shell in your carry-on for embarkation day, and pack a spare pair of socks in your day bag for every port. Families can add the kid-specific items in packing for kids on an Alaska cruise.
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Get a quote or book online →Frequently asked questions
How cold is it on an Alaska cruise deck?
Near glaciers, wind chill on deck commonly feels around 0–5°C even when the port towns feel mild, and early May can dip below freezing. Dress for the deck, not the port forecast.
Do you need rubber boots for an Alaska cruise?
No. Waterproof walking shoes or light hikers cover ports and most excursions. Specialist tours that need boots, such as some glacier walks or bear-viewing trips, typically provide them.
Do I need a winter coat for an Alaska cruise in May?
No. A fleece or light down jacket under a waterproof shell is warmer and more flexible than a parka. Add a second mid-layer and heavier gloves for glacier mornings in May.
More questions you might have
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- Alaska Cruise Dress Code: What People Actually WearFormal night in a fleece state — how dressy Alaska sailings really are, line by line vibe, and the one-outfit answer to evening rules.
- Alaska Gulf Crossing Seasickness: Is It Rough?Is the Gulf of Alaska rough? Honest expectations for the one open-water day on one-way itineraries, plus the cabin and timing choices that tame it.
- Best Spot on a Cruise Ship for Glacier Viewing: Deck by DeckBow, top deck, promenade or balcony? Where to stand for the approach, the rotation and the calving — and how early to get there on glacier day.
- Can You Bring a CPAP on Holland America?Yes — here's how Holland America handles CPAP machines: extension cords, distilled water, where to notify the line, and what to pack in your carry-on.
- Best Cruise Lines for Family Reunions: Cabins, Dining and Group Perks ComparedWhich lines actually make a 15-to-30-person reunion work — big-table dining, connecting cabins, kids clubs and group perks — and the ones that don't, ranked honestly.
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