Wind — 2026
| Month | Lasne | La Hulpe | Difference |
|---|---|---|---|
| Jan | 14.2 km/h | 13.4 km/h | +0.8 |
| Feb | 15.6 km/h | 14.6 km/h | +1.0 |
| Mar | 11.2 km/h | 9.6 km/h | +1.6 |
| Apr | 10.7 km/h | 9 km/h | +1.7 |
| May | 11.7 km/h | 11.7 km/h | +0.0 |
| Jun | 13.1 km/h | 13.1 km/h | +0.0 |
| Jul | 12.4 km/h | 12.4 km/h | +0.0 |
| Aug | 12.7 km/h | 12.7 km/h | +0.0 |
| Sep | 12.6 km/h | 12.5 km/h | +0.1 |
| Oct | 14.6 km/h | 13.9 km/h | +0.7 |
| Nov | – | – | – |
| Dec | – | – | – |