Neerslag — 2026
| Maand | Heemstede | Haarlem | Verschil |
|---|---|---|---|
| Jan | – | 90.4 mm | – |
| Feb | – | 79.8 mm | – |
| Mrt | 1.6 mm | 36.6 mm | -35.0 |
| Apr | 8.5 mm | 4.3 mm | +4.2 |
| Mei | 39.4 mm | 49.5 mm | -10.1 |
| Jun | 73 mm | 100.9 mm | -27.9 |
| Jul | 14.6 mm | 14.4 mm | +0.2 |
| Aug |
| 81 mm |
| 94 mm |
| -13.0 |
| Sep | 93.4 mm | 90.5 mm | +2.9 |
| Okt | 123.9 mm | 125.6 mm | -1.7 |
| Nov | – | – | – |
| Dec | – | – | – |