Wind — 2026
| Month | Olen | Herselt | Difference |
|---|---|---|---|
| Jan | 12.2 km/h | 12.6 km/h | -0.4 |
| Feb | 13.8 km/h | 14.1 km/h | -0.3 |
| Mar | 10.9 km/h | 10.6 km/h | +0.3 |
| Apr | 10.4 km/h | 9.4 km/h | +1.0 |
| May | 11.1 km/h | 10.9 km/h | +0.2 |
| Jun | 12.4 km/h | 12.3 km/h | +0.1 |
| Jul | 12.2 km/h | 11.9 km/h | +0.3 |
| Aug | 12 km/h | 11.8 km/h | +0.2 |
| Sep | 11.4 km/h | 10.7 km/h | +0.7 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |