Wind — 1998
| Mois | Lierde | Herzele | Différence |
|---|---|---|---|
| Jan | 19 km/h | – | – |
| Fév | 12.8 km/h | – | – |
| Mar | 15.5 km/h | – | – |
| Avr | 14.6 km/h | – | – |
| Mai | 11.6 km/h | – | – |
| Juin | 14.1 km/h | – | – |
| Juil | 14.2 km/h | – | – |
| Aoû | 11.1 km/h | – | – |
| Sep |
| 14.6 km/h |
| – |
| – |
| Oct | 18 km/h | – | – |
| Nov | 13.7 km/h | – | – |
| Déc | 16.8 km/h | – | – |