Neerslag — 2026
| Month | Nissewaard | Vlaardingen | Difference |
|---|---|---|---|
| Jan | – | 96.9 mm | – |
| Feb | – | 63.3 mm | – |
| Mar | 5 mm | 35.5 mm | -30.5 |
| Apr | 2 mm | 2.7 mm | -0.7 |
| May | 56.9 mm | 39.8 mm | +17.1 |
| Jun | 79.2 mm | 72.7 mm | +6.5 |
| Jul | 13.3 mm | 13.9 mm | -0.6 |
| Aug |
| 52.3 mm |
| 62.7 mm |
| -10.4 |
| Sep | 66.8 mm | 79.8 mm | -13.0 |
| Oct | 89.8 mm | 94.3 mm | -4.5 |
| Nov | 0 mm | 0 mm | +0.0 |
| Dec | – | – | – |