Wind — 1999
| Month | Schoten | Wommelgem | Difference |
|---|---|---|---|
| Jan | 18.2 km/h | – | – |
| Feb | 16.2 km/h | – | – |
| Mar | 13.6 km/h | – | – |
| Apr | 13.8 km/h | – | – |
| May | 12.9 km/h | – | – |
| Jun | 12.9 km/h | – | – |
| Jul | 12.4 km/h | – | – |
| Aug | 10.9 km/h | – | – |
| Sep |
| 13.1 km/h |
| – |
| – |
| Oct | 15.7 km/h | – | – |
| Nov | 15.4 km/h | – | – |
| Dec | 19.8 km/h | – | – |