The temperatures in Rosenheim in September are quite cold with temperatures between 5°C and 20°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Rosenheim 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.
You can expect a few days of snow in Rosenheim during September. It’s important to get out your snow boots and warm mittens to stay warm while you explore Rosenheim.
Our weather forecast can give you a great sense of what weather to expect in Rosenheim in September 2026.
If you’re planning to visit Rosenheim in the near future, we highly recommend that you review the 14 day weather forecast for Rosenheim before you arrive.
Temperatures
20° / 5°
Rainy Days
7
Snowy Days
3
Dry Days
20
Rainfall
133
mm
Sun Hours
10.3
Hrs
