Neerslag — 2020
| Month | Pijnacker-Nootdorp | Leidschendam-Voorburg | Difference |
|---|---|---|---|
| Jan | 50.7 mm | 50.7 mm | +0.0 |
| Feb | 117.9 mm | 117.9 mm | +0.0 |
| Mar | 48.1 mm | 48.1 mm | +0.0 |
| Apr | 27.7 mm | 27.7 mm | +0.0 |
| May | 14.3 mm | 14.3 mm | +0.0 |
| Jun | 60.4 mm | 60.4 mm | +0.0 |
| Jul | 58 mm | 58 mm | +0.0 |
| Aug | – | – | – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |