Neerslag — 2020
| Mois | Westland | Midden-Delfland | Différence |
|---|---|---|---|
| Jan | 56 mm | 56 mm | +0.0 |
| Fév | 113.8 mm | 113.8 mm | +0.0 |
| Mar | 43.8 mm | 43.8 mm | +0.0 |
| Avr | 26.4 mm | 26.4 mm | +0.0 |
| Mai | 10.6 mm | 10.6 mm | +0.0 |
| Juin | 64.3 mm | 64.3 mm | +0.0 |
| Juil | 59.6 mm | 59.6 mm | +0.0 |
| Aoû |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |