The temperatures in St. Gallen in August are comfortable with low of 10°C and and high up to 22°C.
You can expect rain for roughly half of the month of August in St. Gallen. 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.
Our weather forecast can give you a great sense of what weather to expect in St. Gallen in August 2025.
If you’re planning to visit St. Gallen in the near future, we highly recommend that you review the 14 day weather forecast for St. Gallen before you arrive.
Temperatures
22° / 10°
Rainy Days
10
Snowy Days
0
Dry Days
21
Rainfall
172
mm
Sun Hours
10.7
Hrs
