Neerslag — 2026
| Maand | Hillegom | Heemstede | Verschil |
|---|---|---|---|
| Jan | 91.6 mm | – | – |
| Feb | 62.5 mm | – | – |
| Mrt | 52.2 mm | 1.6 mm | +50.6 |
| Apr | 5.1 mm | 8.5 mm | -3.4 |
| Mei | 39.4 mm | 39.4 mm | +0.0 |
| Jun | 73 mm | 73 mm | +0.0 |
| Jul | 14.6 mm | 14.6 mm | +0.0 |
| Aug |
| 81 mm |
| 81 mm |
| +0.0 |
| Sep | 40.1 mm | 43.8 mm | -3.7 |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |