Wind — 2026
| Month | Saint-Ghislain | Boussu | Difference |
|---|---|---|---|
| Jan | 14.4 km/h | 14.4 km/h | +0.0 |
| Feb | 15.8 km/h | 15.8 km/h | +0.0 |
| Mar | 10.4 km/h | 11.2 km/h | -0.8 |
| Apr | 10.5 km/h | 10.6 km/h | -0.1 |
| May | 11.4 km/h | 11.4 km/h | +0.0 |
| Jun | 12.9 km/h | 12.9 km/h | +0.0 |
| Jul | 12.2 km/h | 12.2 km/h | +0.0 |
| Aug | 12 km/h | 12 km/h | +0.0 |
| Sep | 11.6 km/h | 11.9 km/h | -0.3 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |