The temperatures in Montreux in September are quite cold with temperatures between 7°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Montreux 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.
Please note that Montreux can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Montreux in September 2025.
If you’re planning to visit Montreux in the near future, we highly recommend that you review the 14 day weather forecast for Montreux before you arrive.
Temperatures
16° / 7°
Rainy Days
7
Snowy Days
1
Dry Days
22
Rainfall
95
mm
Sun Hours
11.0
Hrs
