Neerslag — 2023
| Month | Purmerend | Oostzaan | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 51.6 mm | 0.2 mm | +51.4 |
| Apr | 99.2 mm | 95.8 mm | +3.4 |
| May | 72.4 mm | 88.1 mm | -15.7 |
| Jun | 12.2 mm | 10.1 mm | +2.1 |
| Jul | 147.3 mm | 137.3 mm | +10.0 |
| Aug |
| 80.2 mm |
| 104.2 mm |
| -24.0 |
| Sep | 63.5 mm | 71.4 mm | -7.9 |
| Oct | 185.5 mm | 163.1 mm | +22.4 |
| Nov | 139.6 mm | 135.7 mm | +3.9 |
| Dec | 134.7 mm | 135.4 mm | -0.7 |