Neerslag — 2026
| Month | Heemskerk | Beverwijk | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 1.3 mm | 1 mm | +0.3 |
| Apr | 2.9 mm | 3.2 mm | -0.3 |
| May | 49.5 mm | 49.5 mm | +0.0 |
| Jun | 101.1 mm | 101.1 mm | +0.0 |
| Jul | 14.4 mm | 14.4 mm | +0.0 |
| Aug |
| 93.8 mm |
| 93.8 mm |
| +0.0 |
| Sep | 90.4 mm | 90.4 mm | +0.0 |
| Oct | 124.6 mm | 125 mm | -0.4 |
| Nov | – | – | – |
| Dec | – | – | – |