Neerslag — 2023
| Month | Pijnacker-Nootdorp | Leidschendam-Voorburg | 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 | – |