Click on a day for an hourly weather forecast
The temperatures in Gummersbach in September are quite cold with temperatures between 9°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Gummersbach 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 Gummersbach in September 2026.
If you’re planning to visit Gummersbach in the near future, we highly recommend that you review the 14 day weather forecast for Gummersbach before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -1° | 10 | 8 | 14 | 156 mm | Awful | Gummersbach in January |
| February | 4° / -1° | 9 | 9 | 11 | 114 mm | Awful | Gummersbach in February |
| March | 9° / 1° | 9 | 16 | 6 | 114 mm | Awful | Gummersbach in March |
| April | 14° / 4° | 7 | 21 | 3 | 76 mm | Bad | Gummersbach in April |
| May | 17° / 7° | 7 | 23 | 0 | 103 mm | Ok | Gummersbach in May |
| June | 21° / 10° | 8 | 22 | 0 | 107 mm | Ok | Gummersbach in June |
| July | 22° / 12° | 8 | 23 | 0 | 135 mm | Ok | Gummersbach in July |
| August | 22° / 12° | 5 | 26 | 0 | 103 mm | Good | Gummersbach in August |
| September | 18° / 9° | 5 | 25 | 0 | 68 mm | Good | Gummersbach in September |
| October | 13° / 6° | 7 | 24 | 0 | 76 mm | Bad | Gummersbach in October |
| November | 8° / 3° | 9 | 18 | 3 | 108 mm | Awful | Gummersbach in November |
| December | 4° / 0° | 11 | 10 | 10 | 165 mm | Awful | Gummersbach in December |