Neerslag — 2023
| Month | Leidschendam-Voorburg | Pijnacker-Nootdorp | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 0 mm | – | – |
| Apr | 84.7 mm | – | – |
| May | 73.5 mm | – | – |
| Jun | 17.4 mm | – | – |
| Jul | 134 mm | – | – |
| Aug | 115 mm | – | – |
| Sep |
| 82.8 mm |
| – |
| – |
| Oct | 155.2 mm | – | – |
| Nov | 155.2 mm | – | – |
| Dec | 125.5 mm | – | – |