Average Weather during September in Chamonix-Mont-Blanc (Rhône-Alps), France

The average minimum temperature (usually the minimum temperature is noted during the night) in Chamonix-Mont-Blanc in September is 6.0°C (42.8°F). The amount of rain in September is high with an average of 105mm (4.1in). The average maximum temperature lies around 19.0°C (66.2°F). You will see the sun occasionally during this month, it has 190 hours of sun.

So what to wear in September? Visitors traveling to Chamonix-Mont-Blanc should plan on bringing a totally waterproof rain jacket since it will often be raining. Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly.

No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go here.

For other monthly average weather and what to do in September look at the numbers below.

Monthly Averages

Show in Celsius

Min Temperature 42 °F
Max Temperature 66 °F
Chance of Rain 33%
Precipitation 4 in
Rainy Days 10
Sunshine Hours 190

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in .

Swimming
6/10
Cycling
9/10
Walking
9/10
Camping
3/10
Outdoor sports
9/10

More Climate Information For Chamonix-Mont-Blanc

Weather and Climate offers all the information you need to know about the climate in Chamonix-Mont-Blanc.

We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in France and climate and forecast data for all other countries in the world.