Click on a day for an hourly weather forecast
The temperatures in Geneve in September are quite cold with temperatures between 8°C and 21°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Geneve 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 Geneve in September 2025.
If you’re planning to visit Geneve in the near future, we highly recommend that you review the 14 day weather forecast for Geneve before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / -4° | 9 | 12 | 10 | 176 mm | Awful | Geneve in January |
| February | 6° / -4° | 9 | 11 | 9 | 132 mm | Awful | Geneve in February |
| March | 11° / -1° | 8 | 18 | 5 | 132 mm | Awful | Geneve in March |
| April | 15° / 3° | 7 | 22 | 2 | 117 mm | Bad | Geneve in April |
| May | 18° / 5° | 10 | 21 | 0 | 194 mm | Ok | Geneve in May |
| June | 23° / 9° | 10 | 20 | 0 | 190 mm | Good | Geneve in June |
| July | 25° / 11° | 10 | 21 | 0 | 171 mm | Good | Geneve in July |
| August | 25° / 11° | 8 | 23 | 0 | 149 mm | Good | Geneve in August |
| September | 21° / 8° | 6 | 24 | 0 | 116 mm | Good | Geneve in September |
| October | 17° / 4° | 6 | 25 | 0 | 118 mm | Good | Geneve in October |
| November | 11° / 1° | 6 | 20 | 4 | 155 mm | Bad | Geneve in November |
| December | 6° / -2° | 8 | 15 | 7 | 214 mm | Awful | Geneve in December |