Click on a day for an hourly weather forecast
The temperatures in Liege 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 Liege 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 Liege in September 2025.
If you’re planning to visit Liege in the near future, we highly recommend that you review the 14 day weather forecast for Liege before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / 0° | 8 | 14 | 9 | 89 mm | Awful | Liege in January |
| February | 6° / 1° | 8 | 13 | 8 | 74 mm | Awful | Liege in February |
| March | 10° / 3° | 7 | 21 | 3 | 71 mm | Awful | Liege in March |
| April | 14° / 5° | 4 | 24 | 1 | 52 mm | Good | Liege in April |
| May | 17° / 8° | 7 | 24 | 0 | 94 mm | Ok | Liege in May |
| June | 21° / 12° | 6 | 24 | 0 | 98 mm | Good | Liege in June |
| July | 23° / 13° | 6 | 25 | 0 | 100 mm | Perfect | Liege in July |
| August | 23° / 14° | 5 | 26 | 0 | 95 mm | Perfect | Liege in August |
| September | 20° / 11° | 4 | 26 | 0 | 60 mm | Good | Liege in September |
| October | 14° / 8° | 5 | 26 | 0 | 67 mm | Good | Liege in October |
| November | 9° / 5° | 9 | 20 | 2 | 75 mm | Awful | Liege in November |
| December | 6° / 2° | 11 | 14 | 6 | 103 mm | Awful | Liege in December |