The temperatures in Sitka in September are quite cold with temperatures between 8°C and 13°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Sitka. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Sitka in September 2025.
If you’re planning to visit Sitka in the near future, we highly recommend that you review the 14 day weather forecast for Sitka before you arrive.
Temperatures
13° / 8°
Rainy Days
14
Snowy Days
0
Dry Days
16
Rainfall
441
mm
Sun Hours
7.0
Hrs
