Chamonix-Mont-Blanc Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Chamonix-Mont-Blanc.
Climate overview of Chamonix-Mont-Blanc
Chamonix-Mont-Blanc Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Chamonix-Mont-Blanc - and find the best time to visit.
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
Best Time to Visit Chamonix-Mont-Blanc
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Pleasant summers and very cold winters
- Coldest conditions: January, with freezing nights around -12°C (10°F).
Frequently asked questions about the climate in Chamonix-Mont-Blanc
What is the best time to visit Chamonix-Mont-Blanc?
July and August typically offer the most optimal weather in Chamonix-Mont-Blanc. In contrast, January, February, March, April, May, October, November and December tend to have less optimal conditions. Chamonix-Mont-Blanc has pleasant summers and very cold winters.
What temperatures can I expect in Chamonix-Mont-Blanc?
Daytime highs range from -3°C (27°F) in January to 18°C (64°F) in July. Nighttime lows range from -12°C (10°F) to 7°C (45°F). Temperatures vary considerably through the year.
How much rain does Chamonix-Mont-Blanc get?
Annual rainfall is around 1684 mm (66 in). December is the wettest month with 168 mm (6.6 in), while October is the driest with 119 mm (4.7 in). In the coldest months, precipitation may fall as snow.
How sunny is Chamonix-Mont-Blanc?
Chamonix-Mont-Blanc receives around 2,002 hours of sunshine per year. July is the sunniest month with 275 hours, while January is the cloudiest with just 70 hours. Overall, Chamonix-Mont-Blanc enjoys abundant sunshine.
Chamonix-Mont-Blanc 3-Day Forecast
Chamonix-Mont-Blanc 3-Day Forecast
Chamonix-Mont-Blanc on the map
Chamonix-Mont-Blanc is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 10 most charming villages in France
Discover France's top 10 beautiful villages. From Normandy to the Côte d'Azur, experience quaint squares and cobbled streets. Which one will you visit this summer?
An alternative way to discover Paris
From street art, vintage shops, vegetarian cafes, to amazing cultural events, Paris has much to offer for the creative traveler. An overview of sights that you must see if you want to visit this city in an alternative way.
Nature is allowed to take its course in the Ardeche
The Ardèche is France at its most beautiful. The authentic villages and breathtaking mountainous landscapes are one of the main reasons. he climate in Ardèche is very pleasant. Temperatures are high during summer and it is often very sunny.
Explore the natural wonders of Corsica
Corsica offers an abundance of incredible natural wonders to explore. This stunning Mediterranean island is a paradise for outdoor enthusiasts and nature lovers alike.