Wind — 2009
| Mois | Lierde | Herzele | Différence |
|---|---|---|---|
| Jan | 14 km/h | – | – |
| Fév | 12.3 km/h | – | – |
| Mar | 14.3 km/h | – | – |
| Avr | 10.9 km/h | – | – |
| Mai | 13 km/h | – | – |
| Juin | 11.3 km/h | – | – |
| Juil | 13.3 km/h | – | – |
| Aoû | 11.1 km/h | – | – |
| Sep |
| 12.8 km/h |
| – |
| – |
| Oct | 12.9 km/h | – | – |
| Nov | 20.5 km/h | – | – |
| Déc | 15.3 km/h | – | – |