Neerslag — 2026
| Month | Rijswijk | Midden-Delfland | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 4.9 mm | 4.7 mm | +0.2 |
| Apr | 3.6 mm | 2.7 mm | +0.9 |
| May | 39.8 mm | 39.8 mm | +0.0 |
| Jun | 72.7 mm | 72.8 mm | -0.1 |
| Jul | 13.9 mm | 13.9 mm | +0.0 |
| Aug |
| 62.5 mm |
| 62.5 mm |
| +0.0 |
| Sep | 51.8 mm | 45.6 mm | +6.2 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |