Wind — 2026
| Mois | Herstal | Liège | Différence |
|---|---|---|---|
| Jan | 14 km/h | 14 km/h | +0.0 |
| Fév | 14.9 km/h | 14.9 km/h | +0.0 |
| Mar | 11.5 km/h | 10.5 km/h | +1.0 |
| Avr | 10.5 km/h | 9.3 km/h | +1.2 |
| Mai | 11 km/h | 10.9 km/h | +0.1 |
| Juin | 12.3 km/h | 12.3 km/h | +0.0 |
| Juil | 11.7 km/h | 11.6 km/h | +0.1 |
| Aoû | 12.3 km/h | 12.1 km/h | +0.2 |
| Sep | 12.6 km/h | 11.3 km/h | +1.3 |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |