The temperatures in Juneau in August are quite cold with temperatures between 5°C and 13°C, warm clothes are a must.
There’s going to be many days of rain during the month of August in Juneau.
Juneau should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Juneau in August 2025.
If you’re planning to visit Juneau in the near future, we highly recommend that you review the 14 day weather forecast for Juneau before you arrive.
Temperatures
13° / 5°
Rainy Days
16
Snowy Days
0
Dry Days
15
Rainfall
434
mm
Sun Hours
5.5
Hrs
