Wind — 2011
| Month | Ferrières | Érezée | Difference |
|---|---|---|---|
| Jan | 15.3 km/h | – | – |
| Feb | 14.2 km/h | – | – |
| Mar | 13.2 km/h | – | – |
| Apr | 11.1 km/h | – | – |
| May | 12.3 km/h | – | – |
| Jun | 13.3 km/h | – | – |
| Jul | 11.9 km/h | – | – |
| Aug | 12.1 km/h | – | – |
| Sep |
| 13.3 km/h |
| – |
| – |
| Oct | 15.1 km/h | – | – |
| Nov | 13.4 km/h | – | – |
| Dec | 20.3 km/h | – | – |