Wind — 2026
| Month | Onhaye | Hastière | Difference |
|---|---|---|---|
| Jan | 12.9 km/h | 12.9 km/h | +0.0 |
| Feb | 14.9 km/h | 14.9 km/h | +0.0 |
| Mar | 8.1 km/h | 7.1 km/h | +1.0 |
| Apr | 12.4 km/h | 9.9 km/h | +2.5 |
| May | 11.4 km/h | 11.4 km/h | +0.0 |
| Jun | 12.5 km/h | 12.5 km/h | +0.0 |
| Jul | 11.8 km/h | 11.7 km/h | +0.1 |
| Aug | 12.1 km/h | 12.1 km/h | +0.0 |
| Sep | 11.9 km/h | 11.9 km/h | +0.0 |
| Oct | 14.1 km/h | 13.3 km/h | +0.8 |
| Nov | – | – | – |
| Dec | – | – | – |