Wind — 2026
| Month | Genappe | Lasne | Difference |
|---|---|---|---|
| Jan | 14.2 km/h | 14.2 km/h | +0.0 |
| Feb | 15.8 km/h | 15.6 km/h | +0.2 |
| Mar | 12.4 km/h | 11.2 km/h | +1.2 |
| Apr | 11.4 km/h | 10.7 km/h | +0.7 |
| May | 11.7 km/h | 11.7 km/h | +0.0 |
| Jun | 13 km/h | 13.1 km/h | -0.1 |
| Jul | 12.3 km/h | 12.2 km/h | +0.1 |
| Aug | – | – | – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |