The temperatures in Schwyz in September are quite cold with temperatures between 6°C and 15°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Schwyz. 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 Schwyz in September 2026.
If you’re planning to visit Schwyz in the near future, we highly recommend that you review the 14 day weather forecast for Schwyz before you arrive.
Temperatures
15° / 6°
Rainy Days
9
Snowy Days
0
Dry Days
21
Rainfall
177
mm
Sun Hours
10.7
Hrs
