Neerslag — 2026
| Mois | Heemstede | Hillegom | Différence |
|---|---|---|---|
| Jan | – | 91.6 mm | – |
| Fév | – | 62.5 mm | – |
| Mar | 1.6 mm | 52.2 mm | -50.6 |
| Avr | 8.5 mm | 5.1 mm | +3.4 |
| Mai | 39.4 mm | 39.4 mm | +0.0 |
| Juin | 73 mm | 73 mm | +0.0 |
| Juil | 14.6 mm | 14.6 mm | +0.0 |
| Aoû |
| 81 mm |
| 81 mm |
| +0.0 |
| Sep | 58.1 mm | 53.3 mm | +4.8 |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |