Neerslag — 2020
| Month | Schiedam | Delft | Difference |
|---|---|---|---|
| Jan | 50.7 mm | 56 mm | -5.3 |
| Feb | 117.9 mm | 113.8 mm | +4.1 |
| Mar | 48.1 mm | 43.8 mm | +4.3 |
| Apr | 27.7 mm | 26.4 mm | +1.3 |
| May | 14.3 mm | 10.6 mm | +3.7 |
| Jun | 60.4 mm | 64.3 mm | -3.9 |
| Jul | 58 mm | 59.6 mm | -1.6 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |