Chamonix-Mont-Blanc Weather & Climate: Best Time to Visit
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 (68°F) 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.
Monthly Temperature in Chamonix-Mont-Blanc
Depending on the time of the year, temperatures range from pleasant to very cold in Chamonix-Mont-Blanc. Typically, average maximum daytime temperatures range from a pleasant 18°C (64°F) in July to a very cold -3°C (27°F) in the coolest month, January.
Nights vary from 7°C (45°F) in July to around -12°C (10°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Chamonix-Mont-Blanc
Chamonix-Mont-Blanc has a relatively rain/snowy climate with high precipitation levels, averaging 1684 mm (66 in) of rain/snowfall annually. Precipitation levels in Chamonix-Mont-Blanc remain relatively steady throughout the year. December has the most snow, with 168 mm (6.6 in) over 16 days. In the driest month October, this drops slightly to 119 mm (4.7 in), making the city's climate fairly predictable. For more details, please visit our Chamonix-Mont-Blanc Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Chamonix-Mont-Blanc
For those who appreciate different seasons, Chamonix-Mont-Blanc serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.2 hours of sunshine daily, and embrace the darker days in January, offering only 2.3 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Chamonix-Mont-Blanc 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Chamonix-Mont-Blanc
During the months of July and August, Chamonix-Mont-Blanc enjoys pleasant weather with average temperatures ranging from 18°C (65°F) to 18°C (65°F). These months are perfect for sightseeing and exploring.Rainfall during this time ranges from 134 mm (5.3 in) in August to 152 mm (6 in) in July. This means you can expect a mix of sunny days and occasional showers.
The rainy season falls during December, bringing heavy precipitation. Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
