Wind — 2026
| Monat | Haarlem | Heemstede | Unterschied |
|---|---|---|---|
| Jan | 15.2 km/h | – | – |
| Feb | 16.2 km/h | – | – |
| Mär | 13.4 km/h | 17.8 km/h | -4.4 |
| Apr | 15.1 km/h | 14.7 km/h | +0.4 |
| Mai | 15.8 km/h | 16.1 km/h | -0.3 |
| Jun | 17.8 km/h | 18.1 km/h | -0.3 |
| Jul | 17.4 km/h | 17.8 km/h | -0.4 |
| Aug |
| 16 km/h |
| 16.5 km/h |
| -0.5 |
| Sep | 18.8 km/h | 19 km/h | -0.2 |
| Okt | 20.8 km/h | 21 km/h | -0.2 |
| Nov | 8.1 km/h | 8.3 km/h | -0.2 |
| Dez | – | – | – |