Neerslag — 2026
| Mois | Midden-Delfland | Maassluis | Différence |
|---|---|---|---|
| Jan | – | – | – |
| Fév | – | – | – |
| Mar | 4.7 mm | 6.1 mm | -1.4 |
| Avr | 2.7 mm | 2.4 mm | +0.3 |
| Mai | 39.8 mm | 39.8 mm | +0.0 |
| Juin | 72.8 mm | 72.8 mm | +0.0 |
| Juil | 13.9 mm | 13.9 mm | +0.0 |
| Aoû |
| 62.5 mm |
| 62.4 mm |
| +0.1 |
| Sep | 79.6 mm | 79.8 mm | -0.2 |
| Oct | 97.3 mm | 97.3 mm | +0.0 |
| Nov | – | – | – |
| Déc | – | – | – |