Neerslag — 2025
| Month | Midden-Delfland | Vlaardingen | Difference |
|---|---|---|---|
| Jan | – | 104.3 mm | – |
| Feb | – | 34.2 mm | – |
| Mar | – | 5 mm | – |
| Apr | – | 34.2 mm | – |
| May | – | 44.3 mm | – |
| Jun | – | 75.5 mm | – |
| Jul | – | 98.3 mm | – |
| Aug | – | 33.8 mm | – |
| Sep |
| – |
| 54.5 mm |
| – |
| Oct | – | 140.5 mm | – |
| Nov | – | 63.7 mm | – |
| Dec | – | 33.4 mm | – |