Neerslag — 2020
| Mois | Den Haag | Wassenaar | Différence |
|---|---|---|---|
| Jan | 56 mm | 82.7 mm | -26.7 |
| Fév | 113.8 mm | 136.9 mm | -23.1 |
| Mar | 43.8 mm | 46.1 mm | -2.3 |
| Avr | 26.4 mm | 26 mm | +0.4 |
| Mai | 10.6 mm | 19.7 mm | -9.1 |
| Juin | 64.3 mm | 66 mm | -1.7 |
| Juil | 59.6 mm | 80.5 mm | -20.9 |
| Aoû |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |