Wind — 2009
| Mois | Châtelet | Gerpinnes | Différence |
|---|---|---|---|
| Jan | 14.9 km/h | – | – |
| Fév | 13.5 km/h | – | – |
| Mar | 15.5 km/h | – | – |
| Avr | 11.3 km/h | – | – |
| Mai | 13 km/h | – | – |
| Juin | 11.9 km/h | – | – |
| Juil | 13.7 km/h | – | – |
| Aoû | 11 km/h | – | – |
| Sep |
| 13.2 km/h |
| – |
| – |
| Oct | 14 km/h | – | – |
| Nov | 21.8 km/h | – | – |
| Déc | 16.5 km/h | – | – |