The weather in St. Moritz in August is very cold with temperatures between 3°C and 17°C, warm clothes are a must.
There’s going to be many days of rain during the month of August in St. Moritz.
St. Moritz 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!
Our weather forecast can give you a great sense of what weather to expect in St. Moritz in August 2026.
If you’re planning to visit St. Moritz in the near future, we highly recommend that you review the 14 day weather forecast for St. Moritz before you arrive.
Temperatures
17° / 3°
Rainy Days
17
Snowy Days
0
Dry Days
14
Rainfall
186
mm
Sun Hours
10.5
Hrs
