Chamonix weather
Ten-year climate averages, month by month
Chamonix in september
Current month averages, based on ten years of records. Read the full guide →
Chamonix-Mont-Blanc is a resort in the French Alps at the foot of Mont Blanc, the highest summit in Western Europe. Birthplace of extreme alpinism and host of the first Winter Olympics in 1924.
The year in weather
Chamonix weather by month
Pick a month for the full climate guide — temperature, rainfall, sunshine, packing tips and hotel deals for Chamonix.
Places that feel like Chamonix in september
Chamonix weather — FAQ
Q01Which month is warmest in Chamonix?
Which month is warmest in Chamonix?
July runs the highest averages in Chamonix, with typical daytime highs of 23°C (74°F). Plan around midday and consider accommodation with reliable cooling.
Q02Which month is chilliest in Chamonix?
Which month is chilliest in Chamonix?
January brings the lowest averages, with daytime highs near 4°C (38°F). Layer up and expect shorter daylight hours if you plan sightseeing.
Q03When is the rainy season in Chamonix?
When is the rainy season in Chamonix?
May typically records the highest monthly rainfall — around 207mm on average. Plan indoor alternatives and pack proper rain gear if visiting this month.
Q04How would you describe Chamonix's weather?
How would you describe Chamonix's weather?
Chamonix, France has mild summers, cold winters, a distinct rainy season. You can read the detailed month-by-month breakdown on this page.