Neerslag — 2026
| Mois | Westland | Maassluis | Différence |
|---|---|---|---|
| Jan | 104.5 mm | – | – |
| Fév | 66.3 mm | – | – |
| Mar | 44.1 mm | 6.1 mm | +38.0 |
| Avr | 3.2 mm | 2.4 mm | +0.8 |
| 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 |
| 62.4 mm |
| 62.4 mm |
| +0.0 |
| Sep | 50.2 mm | 58.4 mm | -8.2 |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |