Neerslag — 2026
| Maand | Castricum | Heiloo | Verschil |
|---|---|---|---|
| Jan | 90.3 mm | – | – |
| Feb | 60.3 mm | – | – |
| Mrt | 60.4 mm | 5.6 mm | +54.8 |
| Apr | 3.5 mm | 2.3 mm | +1.2 |
| Mei | 49.5 mm | 49.5 mm | +0.0 |
| Jun | 100.9 mm | 100.9 mm | +0.0 |
| Jul | 14.4 mm | 14.5 mm | -0.1 |
| Aug |
| 93.7 mm |
| 93.6 mm |
| +0.1 |
| Sep | 90.8 mm | 90.6 mm | +0.2 |
| Okt | 128.9 mm | 128 mm | +0.9 |
| Nov | – | – | – |
| Dec | – | – | – |