Alaska Weather & Climate

Alaska weather and daylight varies wildly by region and season.

Use our charts to see what the weather will be like during your Alaska vacation.

Alaska shows off its fall colors
Photo Credit: Bob Kaufman

Alaska Weather & Climate

Quick: What are the four seasons in Alaska? Answer: Winter, June, July, and August. That timeworn classic is only partially true--May and September can also be great summer months. Alaska weather and daylight varies wildly by region and season, from short-sleeves in summer to down jackets in winter; from 7 rainy days in May in Southcentral to 17 rainy days in the Inside Passage. Find out for yourself by reviewing the table below, comparing Alaska's weather to your hometown, or using our daylight calculator.

Summer daytime temperatures range from 55° - 70° F, but you'll feel warmer due to long hours of direct sunlight. Still, know what to wear in Alaska and dress in layers. Also know that the weather gets rainier as summer progresses. Read about the best time to visit Alaska based on all these factors.

Southcentral More About This Region

The region you'll visit on an Alaska land tour. Includes Anchorage, Seward, Denali National Park & Fairbanks.

MonthHi (F°)Low (F°)Daylight HoursSunsetRainy DaysClear Days
May543917 hours10:42 pm7 days11 days
June624719 hours11:40 pm8 days10 days
July655118 hours11:17 pm12 days9 days
August634815.5 hours9:57 pm14 days9 days
September554112.5 hours8:20 pm14 days10 days

Inside Passage More About This Region

The region you'll visit on an Alaska Cruise or Ferry Vacation. Includes Juneau, Skagway, Sitka & Ketchikan.

Month

Hi (F°)

Low (F°)

Daylight Hours

Sunset

Rainy Days

Clear Days

May

55

38

16.5 hours

9:18 pm

17 days

8 days

June

60

45

18.1 hours

10:04 pm

15 days

7 days

July

64

48

17.3 hours

9:47 pm

17 days

8 days

August

62

47

15.2 hours

8:39 pm

18 days

9 days

September

55

43

12.4 hours

7:13 pm

20 days

6 days

Far North / Arctic More About This Region

This region is only accessible by plane. Most visitors fly to the Arctic from Fairbanks. Includes Nome, Gates of the Arctic National Park, Barrow

Month

Hi (F°)

Low (F°)

Daylight Hours

Sunset

Rainy Days

Clear Days

May

24

14

23 hours

N/A

4 days

3 days

June

38

30

24 hours

N/A

5 days

3 days

July

45

33

24 hours

N/A

9 days

3 days

August

42

33

19 hours

11:44 pm

11 days

1 day

September

34

27

13 hours

8:59 pm

11 days

1 day

Southwest More About This Region

Home to Kodiak and the Aleutian Islands, this region is accessible by plane or ferry. Also includes Katmai National Park and Lake Clark National Park, popular bear viewing locations

Month

Hi (F°)

Low (F°)

Daylight Hours

Sunset

Rainy Days

Clear Days

May

49

37

16.4 hours

10:28 pm

17 days

8 days

June

56

44

18 hours

11:13 pm

15 days

9 days

July

60

48

17.2 hours

10:57 pm

15 days

9 days

August

62

48

15.1 hours

9:52 pm

14 days

11 days

September

57

43

12.4 hours

8:27 pm

16 days

11 days

Alaska Weather Tools

Alaska's Seasons Show All

Alaska Packing Lists Show All