Wind — 2026
| Month | Houffalize | Lierneux | Difference |
|---|---|---|---|
| Jan | 14.7 km/h | 13.7 km/h | +1.0 |
| Feb | 16.8 km/h | 15.8 km/h | +1.0 |
| Mar | 7.9 km/h | 10.5 km/h | -2.6 |
| Apr | 8.8 km/h | 9 km/h | -0.2 |
| May | 11.1 km/h | 11.1 km/h | +0.0 |
| Jun | 12.2 km/h | 12.2 km/h | +0.0 |
| Jul | 11.8 km/h | 11.8 km/h | +0.0 |
| Aug | 12.5 km/h | 12.6 km/h | -0.1 |
| Sep | 11.8 km/h | 11.9 km/h | -0.1 |
| Oct | 13.3 km/h | 14.1 km/h | -0.8 |
| Nov | – | – | – |
| Dec | – | – | – |