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 | 13.8 mm | 8.2 mm | +5.6 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |