The best time to cruise Alaska is June for most people: the longest days, snow still on the peaks, and the whole season’s wildlife in play. If price matters more, May and September are usually the cheapest months, with quieter ports. July is the warmest and busiest, and August is best for bears and salmon. The 2027 season runs from late April to early October, and there’s no bad month, just different trade-offs.
Free: get the printable Alaska Cruise Planner 2027: best month, best route and real fares →
Below you’ll find each month compared side by side, what you’ll see when, the cheapest weeks we found for 2027 (from about $500 per person), and when to book.
Best Month to Cruise Alaska at a Glance
| Month | Average high (Juneau) | Daylight | Crowds and prices | Best for |
|---|---|---|---|---|
| Late April / May | 50s°F | 15 to 17 hours | Quiet, some of the lowest fares | Value, snowy scenery, often the driest weeks |
| June | Around 60°F | Up to about 18 hours | Busy, fares rising | First-timers, long evenings on deck |
| July | Low to mid 60s°F | 17 to 18 hours | Peak season and peak prices | Families, warmest weather |
| August | Low 60s°F | 14 to 16 hours | Busy until mid-month | Bears, salmon runs, wildlife |
| September / early October | Mid 50s°F | 11 to 14 hours | Quietest, often the cheapest | Bargains, fall colors, fewer people |
Temperatures are typical daytime highs in Southeast Alaska ports such as Juneau and Ketchikan. Glacier days are always colder, often in the 40s°F on deck, so pack layers whatever month you go.
Alaska Cruise Season, Month by Month
Late April and May: the best value
The first sailings of 2027 leave Seattle and Vancouver in late April. Early-season cruises are cool, but May is often one of the drier months in Southeast Alaska, and the mountains are still covered in snow, which makes the scenery especially sharp. Ports are quieter, some shops and tours are only just opening, and fares are among the lowest of the year.
- Good for: couples and retirees, photographers, anyone watching the budget.
- Watch out for: some excursions (such as certain dog-sled and zipline tours) may not have started yet, and nights on deck are chilly.
June: our pick for a first Alaska cruise
June has the longest days of the year. Around the solstice, Juneau gets about 18 hours of daylight, so you can be out on deck looking at mountains at 10pm. The weather is warming up, most excursions are running, and humpback whales are feeding in the Inside Passage. Fares rise from May but are usually below the July peak.
- Good for: first-timers who want a bit of everything.
- Watch out for: bright nights. Bring an eye mask if you’re in a cabin with a window or balcony.
July: the warmest month, and the busiest
July is peak season. It’s usually the warmest month, school holidays fill the ships with families, and salmon start running up the rivers. Expect several ships in port at once in Juneau, Skagway and Ketchikan, and the highest fares of the season.
- Good for: families tied to school holidays, anyone who wants the best chance of mild weather.
- Watch out for: crowds and sold-out excursions. Book whale watching and floatplane tours well ahead.
August: wildlife month
August is still mild, though wetter. It’s the best month for bear viewing, as bears gather at rivers to feed on salmon, and the whales are still around. Crowds thin out after the middle of the month, when US schools go back.
- Good for: wildlife lovers, especially bears.
- Watch out for: more rain. A good waterproof jacket matters more than ever.
September and early October: the cheapest time to cruise Alaska
The last weeks of the season are usually the cheapest, and the ships and ports are at their quietest. You’ll get fall colors on the hillsides and darker nights. September is the wettest month of the main cruise season, so expect some grey days.
- Good for: bargain hunters and people who don’t mind a jacket.
- Watch out for: rain and shorter days. Some seasonal shops and tours close early.
Cheapest Time to Cruise Alaska in 2027 (With Prices)
If price is your main concern, look at May and September, and be flexible on the cruise line. These were the lowest 7-night fares we found for 2027 sailings, per person, for an inside cabin, including port fees:
| Cruise | Route | From |
|---|---|---|
| Norwegian Jade | One way, Whittier to Vancouver | $503 |
| Norwegian Bliss | Round trip from Seattle | $597 |
| Norwegian Encore | Round trip from Seattle, with Glacier Bay | $727 |
| Celebrity Edge | Round trip from Seattle | $923 |
| Princess (Star Princess) | 7 nights | $1,257 |
| Disney Wonder | Round trip from Vancouver | $1,537 |
Prices checked on Trip.com in November 2026 for the cheapest available 2027 date. Fares change daily, and June and July dates cost more.
See every 2027 Alaska cruise with today’s prices on Trip.com →
Two more ways to pay less: book an inside or oceanview cabin and spend the scenic days on the open decks, and watch the January to March “wave season” sales, when many lines add onboard credit, drinks or reduced deposits.
Best Time to See Wildlife on an Alaska Cruise
| Wildlife | Best months | Where |
|---|---|---|
| Humpback whales | All season, peaking June to August | Juneau, Icy Strait Point, the Inside Passage |
| Orcas | All season, sightings vary | Inside Passage, Icy Strait |
| Brown and black bears | Mid-July to early September | Ketchikan, Icy Strait Point, Juneau tours |
| Salmon runs | July to September | Ketchikan, Juneau hatcheries and rivers |
| Bald eagles | All season | Almost every port |
| Sea otters | All season | Sitka, Glacier Bay |
Best Time to See Glaciers
The glaciers are there all season, so the month matters less than the itinerary. What matters is whether your cruise includes a proper glacier day: Glacier Bay National Park, Hubbard Glacier, Tracy Arm or Endicott Arm, or College Fjord. Early in the season there’s more ice in the water, which can sometimes stop big ships reaching the end of narrow fjords such as Tracy Arm. Later in the summer, glaciers calve more often as temperatures rise.
For more on routes, see which side of the ship to book for Alaska and our Alaska cruise ports guide.
Can You See the Northern Lights on an Alaska Cruise?
Rarely. Most of the cruise season has too much daylight. Your best chance is on a late-September sailing, on a clear night, well away from the ship’s lights. It’s a bonus if it happens, but not a reason to choose a date.
When to Book a 2027 Alaska Cruise
- Now to March 2027: the best choice of balcony cabins and itineraries, plus the wave season sales. If you want June or July, or a specific ship, book in this window.
- Spring 2027: June and July sailings start to fill and prices on popular dates tend to rise.
- Last minute: May and September sailings sometimes drop, but peak summer dates rarely do.
More ships than ever are heading north. See our news on Royal Caribbean’s four 2027 Alaska ships, Princess’s eight ships and Holland America’s 100-plus 2027 sailings, or compare lines in which Alaska cruise line suits you.
Our Verdict
- Best overall: June, for long days and a good balance of weather, wildlife and price.
- Cheapest: May and September.
- Warmest: July.
- Best for bears and salmon: August.
- Quietest: late April, early May and late September.
Whatever month you pick, pack layers and waterproofs. Our Alaska cruise packing list covers the rest.
FAQs
What is the best month to cruise Alaska?
June is the best month for most people, with the longest days and a good mix of weather, wildlife and price. May and September are cheaper, and July is warmest.
What is the cheapest month to cruise Alaska?
May and September are usually the cheapest months. For 2027 we found 7-night fares from about $500 per person on early and late season sailings.
When does the 2027 Alaska cruise season start and end?
The season runs from late April to early October, with the most sailings between May and September.
What is the rainiest month for an Alaska cruise?
September is usually the wettest month of the main season, and August is wetter than June and July. May is often one of the drier months.
Is May too early for an Alaska cruise?
No. May is cool, often in the 50s°F, but it’s frequently dry, the scenery is snowy and fares are low. A few seasonal excursions may not have started yet.
How far ahead should I book a 2027 Alaska cruise?
For June or July, or a balcony cabin on a specific ship, book by March 2027. May and September sailings can be booked later, and sometimes drop in price.
