The temperatures in Chamonix in August are quite cold with temperatures between 7°C and 17°C, warm clothes are a must.
You can expect rain for roughly half of the month of August in Chamonix. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Please note that Chamonix can expect a few days of snow in August.
Our weather forecast can give you a great sense of what weather to expect in Chamonix in August 2025.
If you’re planning to visit Chamonix in the near future, we highly recommend that you review the 14 day weather forecast for Chamonix before you arrive.
Temperatures
17° / 7°
Rainy Days
12
Snowy Days
2
Dry Days
17
Rainfall
141
mm
Sun Hours
11.2
Hrs
