Average weather, temperature, rainfall, sunshine hours
The climate of Chamonix is
moderately continental, characterized by cold winters, with temperatures often below freezing (0 °C or 32 °F), and mild or pleasantly warm summers.
Chamonix-Mont-Blanc is located in a valley at 1,000 meters (3,300 feet) above sea level, on the north-western slope of the Alps, in Haute-Savoie.
The
average temperature of the coldest month (January) is of -2.2 °C (28 °F), that of the warmest month (July) is of 16.5 °C (62 °F). Here are the average temperatures.
Chamonix - Average temperatures| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Min (°C) | -7 | -6 | -3 | 0 | 5 | 8 | 9 | 9 | 6 | 2 | -2 | -6 |
|---|
| Max (°C) | 3 | 5 | 9 | 13 | 18 | 21 | 24 | 23 | 19 | 15 | 7 | 3 |
|---|
| Min (°F) | 19 | 21 | 27 | 32 | 41 | 46 | 48 | 48 | 43 | 36 | 28 | 21 |
|---|
| Max (°F) | 37 | 41 | 48 | 55 | 64 | 70 | 75 | 73 | 66 | 59 | 45 | 37 |
|---|
amounts to 1,280 millimeters (50.4 inches) per year. It ranges from 85 mm (3.3 in) in the driest months (February, March) to 130 mm (5.1 in) in the wettest (June). The summer is the rainiest season due to afternoon thunderstorms. Here is the average precipitation.
Chamonix - Average precipitation| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|
| Prec.(mm) | 95 | 85 | 85 | 90 | 120 | 130 | 120 | 125 | 105 | 115 | 100 | 110 | 1280 |
|---|
| Prec.(in) | 3.7 | 3.3 | 3.3 | 3.5 | 4.7 | 5.1 | 4.7 | 4.9 | 4.1 | 4.5 | 3.9 | 4.3 | 50.4 |
|---|
| Days | 10 | 8 | 10 | 10 | 14 | 13 | 12 | 12 | 10 | 10 | 10 | 11 | 128 |
|---|
On average, there are around 1,990
sunshine hours per year. Here are the average sunshine hours per day.
Chamonix - Sunshine| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Hours | 4 | 4 | 5 | 6 | 6 | 7 | 8 | 7 | 6 | 4 | 3 | 3 |
|---|
Best Time
The
best time to visit Chamonix runs from June to August, since it is the mildest and sunniest period of the year. Sometimes, nights can be cool or even cold even in these months, so it can be useful to bring a sweatshirt or sweater and a jacket for the evening.