Wind — 2006
| Month | Ferrières | Manhay | Difference |
|---|---|---|---|
| Jan | 13.9 km/h | – | – |
| Feb | 14.3 km/h | – | – |
| Mar | 16.1 km/h | – | – |
| Apr | 13.3 km/h | – | – |
| May | 15.8 km/h | – | – |
| Jun | 10.1 km/h | – | – |
| Jul | 9.7 km/h | – | – |
| Aug | 13.6 km/h | – | – |
| Sep |
| 12.2 km/h |
| – |
| – |
| Oct | 17 km/h | – | – |
| Nov | 17.6 km/h | – | – |
| Dec | 18.1 km/h | – | – |