Wind — 2026
| Monat | Haarlem | Velsen | Unterschied |
|---|---|---|---|
| Jan | 15.2 km/h | – | – |
| Feb | 16.2 km/h | – | – |
| Mär | 13.4 km/h | 20.4 km/h | -7.0 |
| Apr | 15.1 km/h | 15.7 km/h | -0.6 |
| Mai | 15.8 km/h | 19.2 km/h | -3.4 |
| Jun | 17.8 km/h | 21.4 km/h | -3.6 |
| Jul | 17.4 km/h | 21.1 km/h | -3.7 |
| Aug |
| 16 km/h |
| 19.8 km/h |
| -3.8 |
| Sep | 18.8 km/h | 23.5 km/h | -4.7 |
| Okt | 20.8 km/h | 26.1 km/h | -5.3 |
| Nov | 8.1 km/h | 8.8 km/h | -0.7 |
| Dez | – | – | – |