Click on a day for an hourly weather forecast
The temperatures in Geilenkirchen in September are usually low and can range between 11°C and 20°C.
You can expect about 3 to 8 days of rain in Geilenkirchen 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 Geilenkirchen in September 2026.
If you’re planning to visit Geilenkirchen in the near future, we highly recommend that you review the 14 day weather forecast for Geilenkirchen before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 1° | 11 | 19 | 1 | 66 mm | Awful | Geilenkirchen in January |
| February | 7° / 1° | 8 | 19 | 1 | 56 mm | Bad | Geilenkirchen in February |
| March | 11° / 3° | 8 | 23 | 1 | 49 mm | Ok | Geilenkirchen in March |
| April | 15° / 5° | 5 | 25 | 0 | 34 mm | Good | Geilenkirchen in April |
| May | 18° / 9° | 8 | 23 | 0 | 61 mm | Ok | Geilenkirchen in May |
| June | 22° / 12° | 8 | 22 | 0 | 75 mm | Ok | Geilenkirchen in June |
| July | 23° / 14° | 9 | 22 | 0 | 83 mm | Good | Geilenkirchen in July |
| August | 23° / 14° | 9 | 23 | 0 | 69 mm | Good | Geilenkirchen in August |
| September | 20° / 11° | 6 | 24 | 0 | 57 mm | Good | Geilenkirchen in September |
| October | 15° / 8° | 8 | 23 | 0 | 66 mm | Ok | Geilenkirchen in October |
| November | 10° / 5° | 9 | 21 | 0 | 61 mm | Bad | Geilenkirchen in November |
| December | 6° / 2° | 11 | 18 | 2 | 79 mm | Awful | Geilenkirchen in December |