The temperatures in Asker in September are quite cold with temperatures between 8°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Asker during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Asker in September 2026.
If you’re planning to visit Asker in the near future, we highly recommend that you review the 14 day weather forecast for Asker before you arrive.
Temperatures
16° / 8°
Rainy Days
5
Snowy Days
0
Dry Days
25
Rainfall
66
mm
Sun Hours
5.5
Hrs
