Wind — 1999
| Mois | Lierde | Zottegem | Différence |
|---|---|---|---|
| Jan | 18.2 km/h | – | – |
| Fév | 15.7 km/h | – | – |
| Mar | 13.7 km/h | – | – |
| Avr | 13.7 km/h | – | – |
| Mai | 12.6 km/h | – | – |
| Juin | 12.9 km/h | – | – |
| Juil | 12.3 km/h | – | – |
| Aoû | 11.2 km/h | – | – |
| Sep |
| 13.4 km/h |
| – |
| – |
| Oct | 15.5 km/h | – | – |
| Nov | 15.1 km/h | – | – |
| Déc | 19.3 km/h | – | – |