The temperatures in Frankfurt in September are comfortable with low of 12°C and and high up to 22°C.
The wather in Frankfurt in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Frankfurt in September 2025.
If you’re planning to visit Frankfurt in the near future, we highly recommend that you review the 14 day weather forecast for Frankfurt before you arrive.
Temperatures
22° / 12°
Rainy Days
2
Snowy Days
0
Dry Days
28
Rainfall
42
mm
Sun Hours
10.3
Hrs
