Wind — 2025
| Month | Hillegom | Zandvoort | Difference |
|---|---|---|---|
| Jan | 12.7 km/h | – | – |
| Feb | 11.8 km/h | – | – |
| Mar | 9.4 km/h | – | – |
| Apr | 9.6 km/h | – | – |
| May | 13 km/h | – | – |
| Jun | 12.8 km/h | – | – |
| Jul | 10.6 km/h | – | – |
| Aug | 10.7 km/h | – | – |
| Sep |
| 13.3 km/h |
| – |
| – |
| Oct | 14.5 km/h | – | – |
| Nov | 13.1 km/h | – | – |
| Dec | 14.1 km/h | – | – |