Wind — 1999
| Mois | Malle | Rijkevorsel | Différence |
|---|---|---|---|
| Jan | – | 17.7 km/h | – |
| Fév | – | 15.7 km/h | – |
| Mar | – | 13.3 km/h | – |
| Avr | – | 13.4 km/h | – |
| Mai | – | 12.5 km/h | – |
| Juin | – | 12.5 km/h | – |
| Juil | – | 12 km/h | – |
| Aoû | – | 10.7 km/h | – |
| Sep |
| – |
| 12.7 km/h |
| – |
| Oct | – | 15.3 km/h | – |
| Nov | – | 15 km/h | – |
| Déc | – | 19.3 km/h | – |