Neerslag — 2025
| Month | Purmerend | Oostzaan | Difference |
|---|---|---|---|
| Jan | 95.1 mm | 97.7 mm | -2.6 |
| Feb | 39.2 mm | 39.2 mm | +0.0 |
| Mar | 4 mm | 11.1 mm | -7.1 |
| Apr | 33.3 mm | 31 mm | +2.3 |
| May | 53.2 mm | 56.7 mm | -3.5 |
| Jun | 53.7 mm | 70.8 mm | -17.1 |
| Jul | 65.8 mm | 100 mm | -34.2 |
| Aug |
| 37.8 mm |
| 44.2 mm |
| -6.4 |
| Sep | 71.9 mm | 87.7 mm | -15.8 |
| Oct | 147.5 mm | 151.4 mm | -3.9 |
| Nov | 64.3 mm | 72.7 mm | -8.4 |
| Dec | 25 mm | 33.7 mm | -8.7 |