Click on a day for an hourly weather forecast
The weather in Chamonix in October is very cold with temperatures between 0°C and 9°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Chamonix during the month of October. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Chamonix is going to experience quite a number of days of snow during October. It’s the perfect time to build snowmen, drink hot cocoa, and have a snowball fight. Just remember to wear a warm scarf and a pair of mittens!
Our weather forecast can give you a great sense of what weather to expect in Chamonix in October 2025.
If you’re planning to visit Chamonix in the near future, we highly recommend that you review the 14 day weather forecast for Chamonix before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -11° | 5 | 7 | 19 | 125 mm | Awful | Chamonix in January |
| February | -2° / -11° | 5 | 5 | 19 | 96 mm | Awful | Chamonix in February |
| March | 1° / -7° | 6 | 6 | 21 | 105 mm | Awful | Chamonix in March |
| April | 5° / -3° | 8 | 3 | 20 | 100 mm | Awful | Chamonix in April |
| May | 9° / 1° | 14 | 3 | 18 | 185 mm | Awful | Chamonix in May |
| June | 14° / 5° | 17 | 7 | 7 | 174 mm | Bad | Chamonix in June |
| July | 17° / 7° | 14 | 15 | 2 | 166 mm | Bad | Chamonix in July |
| August | 17° / 7° | 12 | 17 | 2 | 141 mm | Bad | Chamonix in August |
| September | 13° / 4° | 10 | 15 | 5 | 90 mm | Awful | Chamonix in September |
| October | 9° / 0° | 6 | 14 | 11 | 78 mm | Bad | Chamonix in October |
| November | 3° / -4° | 5 | 9 | 17 | 101 mm | Awful | Chamonix in November |
| December | -1° / -9° | 5 | 8 | 18 | 117 mm | Awful | Chamonix in December |