Wind — 2004
| Month | Court-Saint-Étienne | Ottignies-Louvain-la-Neuve | Difference |
|---|---|---|---|
| Jan | 18.6 km/h | – | – |
| Feb | 16.4 km/h | – | – |
| Mar | 14.4 km/h | – | – |
| Apr | 13.4 km/h | – | – |
| May | 10.8 km/h | – | – |
| Jun | 13.2 km/h | – | – |
| Jul | 12.3 km/h | – | – |
| Aug | 13.7 km/h | – | – |
| Sep | 15.8 km/h | – | – |
| Oct | 17 km/h | – | – |
| Nov | 12.8 km/h | – | – |
| Dec | 13 km/h | – | – |