Click on a day for an hourly weather forecast
The temperatures in Geleen 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 Geleen 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 Geleen in September 2026.
If you’re planning to visit Geleen in the near future, we highly recommend that you review the 14 day weather forecast for Geleen before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 1° | 9 | 14 | 8 | 85 mm | Awful | Geleen in January |
| February | 6° / 1° | 8 | 13 | 7 | 74 mm | Awful | Geleen in February |
| March | 10° / 3° | 7 | 21 | 3 | 71 mm | Awful | Geleen in March |
| April | 15° / 6° | 4 | 25 | 1 | 47 mm | Good | Geleen in April |
| May | 18° / 9° | 6 | 25 | 0 | 89 mm | Good | Geleen in May |
| June | 21° / 12° | 6 | 24 | 0 | 95 mm | Good | Geleen in June |
| July | 23° / 14° | 5 | 26 | 0 | 89 mm | Perfect | Geleen in July |
| August | 23° / 14° | 4 | 27 | 0 | 79 mm | Perfect | Geleen in August |
| September | 20° / 11° | 4 | 26 | 0 | 53 mm | Good | Geleen in September |
| October | 15° / 8° | 5 | 26 | 0 | 57 mm | Good | Geleen in October |
| November | 10° / 5° | 7 | 21 | 1 | 65 mm | Bad | Geleen in November |
| December | 6° / 2° | 10 | 16 | 5 | 95 mm | Awful | Geleen in December |