The weather in Valais in August is very cold with temperatures between 2°C and 15°C, warm clothes are a must.
There’s going to be many days of rain during the month of August in Valais.
Valais should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Please note that Valais can expect a few days of snow in August.
Our weather forecast can give you a great sense of what weather to expect in Valais in August 2025.
If you’re planning to visit Valais in the near future, we highly recommend that you review the 14 day weather forecast for Valais before you arrive.
Temperatures
15° / 2°
Rainy Days
20
Snowy Days
1
Dry Days
10
Rainfall
292
mm
Sun Hours
10.4
Hrs
