Wind — 2026
| Month | Heemskerk | Castricum | Difference |
|---|---|---|---|
| Jan | – | 16.9 km/h | – |
| Feb | – | 18.1 km/h | – |
| Mar | 20.6 km/h | 15.1 km/h | +5.5 |
| Apr | 16.5 km/h | 15.9 km/h | +0.6 |
| May | 15.8 km/h | 15.8 km/h | +0.0 |
| Jun | 17.8 km/h | 17.8 km/h | +0.0 |
| Jul | 17.4 km/h | 17.4 km/h | +0.0 |
| Aug |
| 16 km/h |
| 16 km/h |
| +0.0 |
| Sep | 18.8 km/h | 18.8 km/h | +0.0 |
| Oct | 20.6 km/h | 20.4 km/h | +0.2 |
| Nov | – | – | – |
| Dec | – | – | – |