Wind — 2007
| Month | Châtelet | Gerpinnes | Difference |
|---|---|---|---|
| Jan | 21.5 km/h | – | – |
| Feb | 16.5 km/h | – | – |
| Mar | 15.9 km/h | – | – |
| Apr | 10.1 km/h | – | – |
| May | 15.4 km/h | – | – |
| Jun | 13.3 km/h | – | – |
| Jul | 15.9 km/h | – | – |
| Aug | 12.4 km/h | – | – |
| Sep |
| 12.8 km/h |
| – |
| – |
| Oct | 10.5 km/h | – | – |
| Nov | 15 km/h | – | – |
| Dec | 17.3 km/h | – | – |