Click on a day for an hourly weather forecast
The temperatures in Namur 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 Namur 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 Namur in September 2025.
If you’re planning to visit Namur in the near future, we highly recommend that you review the 14 day weather forecast for Namur before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -1° | 9 | 6 | 17 | 137 mm | Awful | Namur in January |
| February | 4° / -1° | 7 | 7 | 15 | 112 mm | Awful | Namur in February |
| March | 8° / 1° | 9 | 13 | 10 | 97 mm | Awful | Namur in March |
| April | 12° / 3° | 7 | 20 | 4 | 72 mm | Awful | Namur in April |
| May | 15° / 6° | 8 | 22 | 1 | 110 mm | Ok | Namur in May |
| June | 18° / 10° | 8 | 22 | 0 | 118 mm | Ok | Namur in June |
| July | 20° / 12° | 7 | 24 | 0 | 108 mm | Ok | Namur in July |
| August | 20° / 12° | 6 | 25 | 0 | 103 mm | Good | Namur in August |
| September | 18° / 9° | 5 | 25 | 0 | 84 mm | Good | Namur in September |
| October | 12° / 5° | 8 | 22 | 1 | 95 mm | Bad | Namur in October |
| November | 7° / 3° | 10 | 13 | 7 | 125 mm | Awful | Namur in November |
| December | 4° / 0° | 11 | 7 | 14 | 160 mm | Awful | Namur in December |