Neerslag — 2026
| Monat | Alkmaar | Heiloo | Unterschied |
|---|---|---|---|
| Jan | 86.9 mm | – | – |
| Feb | 60.9 mm | – | – |
| Mär | 30.2 mm | 5.6 mm | +24.6 |
| Apr | 1.9 mm | 2.3 mm | -0.4 |
| Mai | 38.6 mm | 49.5 mm | -10.9 |
| Jun | 86.8 mm | 100.9 mm | -14.1 |
| Jul | 13.2 mm | 14.5 mm | -1.3 |
| Aug |
| 86.8 mm |
| 93.6 mm |
| -6.8 |
| Sep | 99.9 mm | 90.6 mm | +9.3 |
| Okt | 117 mm | 121.1 mm | -4.1 |
| Nov | 5.1 mm | 6.3 mm | -1.2 |
| Dez | – | – | – |