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Alaska

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Travel Info
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Travel Info

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Alaska Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Alaska year round climate

  • Spring (March–May): Average -10.1°C–9.7°C, cold climate, with chances of snowfall, but daylight hours gradually lengthen. Common activities: Aurora viewing (if far enough north), snow activities (e.g., snowshoeing, snowmobiling). Recommended clothing: Warm down jacket, waterproof jacket, hat, gloves, scarf.
  • Summer (June–August): Average 16.0°C–16.7°C, cool climate, more rainfall, warm days, cool nights. Common activities: Hiking, camping, whale watching, fishing, boating. Recommended clothing: Breathable and moisture-wicking clothing, waterproof jacket, warm layer.
  • Autumn (September–November): Average 7.2°C–-11.3°C, climate turning cool, still considerable rainfall, snow begins. Common activities: Fall foliage viewing (in some areas), birdwatching. Recommended clothing: Warm jacket, waterproof jacket, hat, gloves, scarf.
  • Winter (December–February): Average -17.4°C–-15.9°C, severe cold, persistent low temperatures, frequent snowfall, short daylight hours. Common activities: Snow activities (e.g., skiing, sledding), aurora viewing. Recommended clothing: Heavy warm clothing, waterproof jacket, hat, gloves, scarf, snow boots.

Alaska climatological average

Annual average temperature: approx. -1.4°C / Annual rainfall: approx. 365 mm / Summer humidity: 60%–70% / Rainiest month: July

Alaska monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-20.2°C
15.3
February
-15.9°C
24.6
March
-10.1°C
9
April
-1.9°C
8.9
May
9.7°C
28
June
16°C
26.6
July
16.7°C
56
August
13.6°C
49.4
September
7.2°C
37.2
October
-3.1°C
50
November
-11.3°C
30.4
December
-17.4°C
29.9

Alaska weather for the next seven days

3/18
Wednesday
Light freezing rain
-20.2°C/-33.8°C
3/19
Thursday
Light snow
-18.5°C/-30.7°C
3/20
Friday
Light freezing rain
-16.2°C/-32.4°C
3/21
Saturday
Freezing fog
-13°C/-34.1°C
3/22
Sunday
Freezing fog
-11.6°C/-32°C
3/23
Monday
Light snow
-10°C/-24°C
3/24
Tuesday
Cloudy
-10.9°C/-26.3°C

Alaska Frequently Asked Questions and Useful Information for Travel

What is the best time of year to visit Alaska?

The best time to visit Alaska depends on your priorities. Summer (June-August) offers long daylight hours, open trails, and abundant wildlife viewing. Spring (April-May) and Fall (September) are ideal for fewer crowds, lower prices, and chances to see wildlife or the Northern Lights. Winter (October-March) is for hardy adventurers seeking snow and Northern Lights displays, with March being a highlight for longer days and peak aurora viewing.

What is the nicest part of Alaska to visit?

Alaska offers diverse beauty, and the 'nicest' part depends on your interests. Denali National Park is a must for incredible wildlife viewing, including caribou, grizzly bears, and moose. The Kenai Peninsula, with towns like Seward and Homer, boasts stunning coastal scenery, glaciers, and marine life. Glacier Bay National Park is renowned for its massive glaciers. For a unique experience, consider Talkeetna or Chena Hot Springs for relaxation and aurora viewing.

What month is the cheapest to fly to Alaska?

The cheapest months to fly to Alaska are typically during the off-season, from October through March. Late fall and winter months like February often feature the most affordable flights and accommodations due to lower demand and fewer tourists. Summer is the peak season and therefore the most expensive time to visit.

How many days do you need in Alaska?

For a fulfilling Alaska vacation, generally plan for 7 to 14 days. A sweet spot for first-time visitors is 7 to 10 days, allowing time to experience highlights like Denali and Kenai Fjords. Shorter trips of 4 days can cover major sights, while 10 to 14 days offer a more relaxed pace with opportunities for diverse experiences, whether exploring by land or taking a cruise.

What are the must-see attractions in Alaska?

Key attractions in Alaska include Denali National Park for its wildlife and majestic mountains, Glacier Bay National Park for its stunning glaciers and marine life, and the Kenai Fjords National Park for its dramatic coastal landscapes. Exploring towns like Anchorage and Fairbanks offers cultural insights, while experiencing the Northern Lights during winter is a breathtaking spectacle.