Wind — 2025
| Month | Castricum | Heemskerk | Difference |
|---|---|---|---|
| Jan | 16.5 km/h | – | – |
| Feb | 14.6 km/h | – | – |
| Mar | 11.8 km/h | – | – |
| Apr | 11.4 km/h | – | – |
| May | 15.4 km/h | – | – |
| Jun | 15.8 km/h | – | – |
| Jul | 12.8 km/h | – | – |
| Aug | 13 km/h | – | – |
| Sep |
| 17.1 km/h |
| – |
| – |
| Oct | 18.3 km/h | – | – |
| Nov | 17.1 km/h | – | – |
| Dec | 18.1 km/h | – | – |