Wind — 2023
| Month | Lasne | Genappe | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 20.2 km/h | 21.1 km/h | -0.9 |
| Apr | 15 km/h | 15.1 km/h | -0.1 |
| May | 13.5 km/h | 13.8 km/h | -0.3 |
| Jun | 12.3 km/h | 12.3 km/h | +0.0 |
| Jul | 17 km/h | 16.9 km/h | +0.1 |
| Aug |
| 13.3 km/h |
| 13.3 km/h |
| +0.0 |
| Sep | 12.4 km/h | 12.3 km/h | +0.1 |
| Oct | 18 km/h | 17.9 km/h | +0.1 |
| Nov | 21.4 km/h | 21.4 km/h | +0.0 |
| Dec | 22 km/h | 21.9 km/h | +0.1 |