The temperatures in Selfoss in August are quite cold with temperatures between 8°C and 14°C, warm clothes are a must.
You can expect rain for roughly half of the month of August in Selfoss. 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 Selfoss in August 2025.
If you’re planning to visit Selfoss in the near future, we highly recommend that you review the 14 day weather forecast for Selfoss before you arrive.
Temperatures
14° / 8°
Rainy Days
9
Snowy Days
0
Dry Days
22
Rainfall
156
mm
Sun Hours
7.3
Hrs
