Wind — 1998
| Month | Lierde | Geraardsbergen | Difference |
|---|---|---|---|
| Jan | 19 km/h | – | – |
| Feb | 12.8 km/h | – | – |
| Mar | 15.5 km/h | – | – |
| Apr | 14.6 km/h | – | – |
| May | 11.6 km/h | – | – |
| Jun | 14.1 km/h | – | – |
| Jul | 14.2 km/h | – | – |
| Aug | 11.1 km/h | – | – |
| Sep |
| 14.6 km/h |
| – |
| – |
| Oct | 18 km/h | – | – |
| Nov | 13.7 km/h | – | – |
| Dec | 16.8 km/h | – | – |