Wind — 1997
| Month | Châtelet | Aiseau-Presles | Difference |
|---|---|---|---|
| Jan | 11.4 km/h | – | – |
| Feb | 21.5 km/h | – | – |
| Mar | 13 km/h | – | – |
| Apr | 13.1 km/h | – | – |
| May | 14 km/h | – | – |
| Jun | 13.2 km/h | – | – |
| Jul | 11.4 km/h | – | – |
| Aug | 10.1 km/h | – | – |
| Sep |
| 10.7 km/h |
| – |
| – |
| Oct | 14.7 km/h | – | – |
| Nov | 16.3 km/h | – | – |
| Dec | 19.1 km/h | – | – |