The temperatures in Lower Austria 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 Lower Austria 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.
Our weather forecast can give you a great sense of what weather to expect in Lower Austria in September 2025.
If you’re planning to visit Lower Austria in the near future, we highly recommend that you review the 14 day weather forecast for Lower Austria before you arrive.
Temperatures
18° / 8°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
118
mm
Sun Hours
10.2
Hrs
