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Climate in Chamonix-Mont-Blanc (Rhône-Alps), France

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Forecast for Chamonix-Mont-Blanc

Tue   May 28
16°C | 7°C
NW 7 km/h
partly cloudy and no rain

partly cloudy and no rain

Wed   May 29
13°C | 7°C
W 7 km/h
3.1 mm
overcast and small chance of rain

overcast and small chance of rain

Thu   May 30
13°C | 7°C
W 11 km/h
14 mm
broken clouds and rain

broken clouds and rain

The best time of year to visit Chamonix-Mont-Blanc in France

Chamonix has a humid continental climate and the weather is greatly influenced by the height and location of the valley. The higher one goes, the colder and wetter it becomes. At the highest point of the Mont Blanc all precipitation is snow and the average temperature is at least 20°C lower than in Chamonix itself. From 2500 meters (8202.1 ft) high, the area is snow-covered in winter. Above 3300 meters (10826 ft) it snows in summer as well.

Other facts from our historical weather data:

  • Which months have the greatest rainfall in Chamonix-Mont-Blanc?
    Most rainfall (rainy season) is seen in January, May, June, July and December.
  • When is winter in Chamonix-Mont-Blanc?
    The coldest season / winter is in the following months: January, February, November and December.
  • Which is the warmest month in Chamonix-Mont-Blanc?
    July has an average maximum temperature of 18°C and is the warmest month of the year.
  • Which is the coldest month in Chamonix-Mont-Blanc?
    The coldest month is January with an average maximum temperature of -3°C.
  • Which is the wettest month in Chamonix-Mont-Blanc?
    December tops the wettest month list with 168 mm of rainfall.
  • Which is the driest month in Chamonix-Mont-Blanc?
    October is the driest month with 119 mm of precipitation.
  • Which is the sunniest month in Chamonix-Mont-Blanc?
    July is the sunniest month with an average of 275 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.