Click on a day for an hourly weather forecast
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.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -7° | 6 | 6 | 19 | 136 mm | Awful | Montreux in January |
| February | 1° / -6° | 6 | 7 | 17 | 102 mm | Awful | Montreux in February |
| March | 4° / -3° | 6 | 9 | 16 | 112 mm | Awful | Montreux in March |
| April | 9° / 1° | 8 | 12 | 10 | 102 mm | Awful | Montreux in April |
| May | 12° / 4° | 12 | 13 | 6 | 174 mm | Awful | Montreux in May |
| June | 17° / 8° | 13 | 17 | 0 | 163 mm | Ok | Montreux in June |
| July | 19° / 10° | 12 | 19 | 0 | 151 mm | Ok | Montreux in July |
| August | 19° / 10° | 9 | 22 | 0 | 131 mm | Ok | Montreux in August |
| September | 16° / 7° | 7 | 22 | 1 | 95 mm | Ok | Montreux in September |
| October | 11° / 4° | 5 | 21 | 5 | 80 mm | Bad | Montreux in October |
| November | 6° / 0° | 6 | 12 | 12 | 115 mm | Awful | Montreux in November |
| December | 2° / -4° | 5 | 9 | 17 | 144 mm | Awful | Montreux in December |