Chamonix-Mont-Blanc weather in September (Rhône-Alps, France)

What does the weather outlook for Chamonix-Mont-Blanc look like in September? Use this page to get an overview of the month’s weather conditions.

Temperatures

Typically, September in Chamonix-Mont-Blanc includes moderate temperatures and high rainfall. Throughout the day, temperatures typically settle at around 14°C. But by evening, they drop to around 3°C.

Precipitation

Chamonix-Mont-Blanc in September usually receives high rainfall, averaging around 120 mm for the month. According to historical climate patterns, there are usually around 15 days days of rain.

Average sunshine

With approximately 190 hours hours of sun, the days are filled with brightness. It makes it a perfect month for outdoor activities.

In case you lean more towards enjoying temperate temperatures and rain-free days July and August typically offer the most optimal weather. In contrast, January, February, March, April, May, October, November and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Chamonix-Mont-Blanc climate page with graphs.

 

Chamonix-Mont-Blanc, monthly averages in September

Min Temperature 3°C  

Max Temperature 14°C  

Chance of Rain 49%  

Precipitation 120 mm  

Rainy days 15 days  

Sunshine 190 hours  

Percentage Sunshine  

Where to go in France in September

Find out more about the weather in France and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

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. Bring a rain jacket in case it rains during your stay.

What To Do

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

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Chamonix-Mont-Blanc.

Our site offers climate and forecast data for every country in the world. Are you going to France? On this website you can find historical weather averages for many cities in France. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.