The temperatures in Appenzell in September are quite cold with temperatures between 8°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Appenzell during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that Appenzell can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Appenzell in September 2026.
If you’re planning to visit Appenzell in the near future, we highly recommend that you review the 14 day weather forecast for Appenzell before you arrive.
Temperatures
18° / 8°
Rainy Days
5
Snowy Days
1
Dry Days
24
Rainfall
101
mm
Sun Hours
10.7
Hrs
