The weather in Zweisimmen in September is very cold with temperatures between 4°C and 17°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Zweisimmen 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 Zweisimmen in September 2025.
If you’re planning to visit Zweisimmen in the near future, we highly recommend that you review the 14 day weather forecast for Zweisimmen before you arrive.
Temperatures
17° / 4°
Rainy Days
6
Snowy Days
0
Dry Days
23
Rainfall
70
mm
Sun Hours
10.5
Hrs
