Wind — 2026
| Mois | Haarlem | Heemstede | Différence |
|---|---|---|---|
| Jan | 15.2 km/h | – | – |
| Fév | 16.2 km/h | – | – |
| Mar | 13.4 km/h | 17.8 km/h | -4.4 |
| Avr | 15.1 km/h | 14.7 km/h | +0.4 |
| Mai | 15.8 km/h | 16.1 km/h | -0.3 |
| Juin | 17.8 km/h | 18.1 km/h | -0.3 |
| Juil | 16.5 km/h | 16.8 km/h | -0.3 |
| Aoû |
| 6.5 km/h |
| 6 km/h |
| +0.5 |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |