Wind — 2019
| Month | Érezée | Ferrières | Difference |
|---|---|---|---|
| Jan | – | 16.6 km/h | – |
| Feb | – | 16.4 km/h | – |
| Mar | – | 19.7 km/h | – |
| Apr | – | 13.4 km/h | – |
| May | – | 11.9 km/h | – |
| Jun | – | 13.2 km/h | – |
| Jul | – | 11.2 km/h | – |
| Aug | – | 11.8 km/h | – |
| Sep |
| – |
| 14.5 km/h |
| – |
| Oct | – | 17.8 km/h | – |
| Nov | – | 17.1 km/h | – |
| Dec | – | 19.4 km/h | – |