Wind — 2005
| Month | Châtelet | Farciennes | Difference |
|---|---|---|---|
| Jan | 18.2 km/h | – | – |
| Feb | 14.7 km/h | – | – |
| Mar | 13.6 km/h | – | – |
| Apr | 12.3 km/h | – | – |
| May | 13.6 km/h | – | – |
| Jun | 11.3 km/h | – | – |
| Jul | 12.4 km/h | – | – |
| Aug | 11.9 km/h | – | – |
| Sep |
| 11.4 km/h |
| – |
| – |
| Oct | 14.9 km/h | – | – |
| Nov | 15.7 km/h | – | – |
| Dec | 15.4 km/h | – | – |