Neerslag — 2026
| Maand | Heemskerk | Castricum | Verschil |
|---|---|---|---|
| Jan | – | 90.3 mm | – |
| Feb | – | 60.3 mm | – |
| Mrt | 1.3 mm | 60.4 mm | -59.1 |
| Apr | 2.9 mm | 3.5 mm | -0.6 |
| Mei | 49.5 mm | 49.5 mm | +0.0 |
| Jun | 101.1 mm | 100.9 mm | +0.2 |
| Jul | 10.7 mm | 14 mm | -3.3 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |