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September will undoubtedly be cooler and typically wetter than the rest of the Alaskan cruise season but don't let that discourage you from experiencing all the possibilities September cruises bring. While there is a legitimate argument for mid-summer cruises the same can be said for Sept as well.

Alaska Cruise Weather in September

First lets look at the average temperatures in some of the ports typically visited.

Juneau Alaska Weather in September

  • The average high temperature in Juneau Alaska is 56.1°F. In the past 60 years, the highest temperature recorded in Juneau was 73°F and the lowest temperature was 23°F. Overall, the mean daily low in September is 43.8°F.
  • Juneau receives an average of 7.54 inches of precipitation during September. September is the second wettest month behind October in Juneau.

Ketchikan Alaska Weather in September

  • The average high temperature in Ketchikan Alaska is 60°F with a nighttime low of 43°F. In the past 50 years, the highest temperature recorded in Ketchikan was 59.1°F and the lowest temperature was 47.1°F.
  • Ketchikan receives an average of 9.92 inches of precipitation during September.

Anchorage Alaska Weather in September

  • The average high temperature in Anchorage Alaska is 55°F. In the past 50 years, the highest temperature recorded in Anchorage was 73°F and the lowest temperature was 19°F. Overall, the mean daily low in September is 41.1°F.
  • Anchorage receives an average of 2.87 inches of precipitation during September.

Fairbanks Alaska Weather in September

  • The average high temperature in Fairbanks Alaska is 54.3°F. In the past 60 years, the highest temperature recorded in Fairbanks was 84°F and the lowest temperature was 3°F. Overall, the mean daily low in September is 34.7°F.
  • Fairbanks receives an average of 1.12 inches of precipitation during September.


What's the weather like during an Alaskan Cruise in September?

It's pretty hard to predict what the weather will be like during an Alaskan cruise in September but it is pretty safe to say that taking along a rain coat is a high priority.