Neerslag — 2020
| Month | Leiderdorp | Zoeterwoude | Difference |
|---|---|---|---|
| Jan | 69.1 mm | 50.7 mm | +18.4 |
| Feb | 126.9 mm | 117.9 mm | +9.0 |
| Mar | 45.3 mm | 48.1 mm | -2.8 |
| Apr | 25.5 mm | 27.7 mm | -2.2 |
| May | 16.9 mm | 14.3 mm | +2.6 |
| Jun | 64.4 mm | 60.4 mm | +4.0 |
| Jul | 71.2 mm | 58 mm | +13.2 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |