Click on a day for an hourly weather forecast
The temperatures in Valkenburg in September are usually low and can range between 10°C and 20°C.
You can expect about 3 to 8 days of rain in Valkenburg 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 Valkenburg in September 2026.
If you’re planning to visit Valkenburg in the near future, we highly recommend that you review the 14 day weather forecast for Valkenburg before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / -1° | 9 | 14 | 8 | 96 mm | Awful | Valkenburg in January |
| February | 6° / 0° | 9 | 13 | 6 | 80 mm | Awful | Valkenburg in February |
| March | 10° / 2° | 8 | 21 | 2 | 81 mm | Awful | Valkenburg in March |
| April | 15° / 4° | 5 | 24 | 1 | 58 mm | Good | Valkenburg in April |
| May | 17° / 7° | 7 | 24 | 0 | 105 mm | Ok | Valkenburg in May |
| June | 21° / 11° | 7 | 23 | 0 | 112 mm | Ok | Valkenburg in June |
| July | 23° / 12° | 7 | 24 | 0 | 120 mm | Good | Valkenburg in July |
| August | 23° / 13° | 5 | 26 | 0 | 104 mm | Perfect | Valkenburg in August |
| September | 20° / 10° | 4 | 26 | 0 | 67 mm | Good | Valkenburg in September |
| October | 15° / 7° | 5 | 26 | 0 | 68 mm | Good | Valkenburg in October |
| November | 10° / 4° | 9 | 20 | 1 | 78 mm | Bad | Valkenburg in November |
| December | 6° / 1° | 12 | 14 | 5 | 108 mm | Awful | Valkenburg in December |