Click on a day for an hourly weather forecast
The temperatures in Belvaux in September are quite cold with temperatures between 9°C and 19°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Belvaux 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 Belvaux in September 2025.
If you’re planning to visit Belvaux in the near future, we highly recommend that you review the 14 day weather forecast for Belvaux before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -1° | 9 | 13 | 9 | 119 mm | Awful | Belvaux in January |
| February | 5° / 0° | 8 | 11 | 9 | 98 mm | Awful | Belvaux in February |
| March | 10° / 2° | 8 | 20 | 3 | 78 mm | Awful | Belvaux in March |
| April | 14° / 4° | 6 | 23 | 1 | 62 mm | Good | Belvaux in April |
| May | 17° / 7° | 8 | 23 | 0 | 114 mm | Ok | Belvaux in May |
| June | 20° / 10° | 8 | 22 | 0 | 124 mm | Ok | Belvaux in June |
| July | 22° / 12° | 6 | 25 | 0 | 112 mm | Good | Belvaux in July |
| August | 22° / 12° | 6 | 25 | 0 | 101 mm | Good | Belvaux in August |
| September | 19° / 9° | 5 | 25 | 0 | 83 mm | Good | Belvaux in September |
| October | 14° / 6° | 7 | 24 | 0 | 89 mm | Ok | Belvaux in October |
| November | 8° / 3° | 9 | 18 | 2 | 106 mm | Awful | Belvaux in November |
| December | 5° / 1° | 11 | 13 | 8 | 141 mm | Awful | Belvaux in December |