Neerslag — 2020
| Month | Ridderkerk | Hendrik-Ido-Ambacht | Difference |
|---|---|---|---|
| Jan | 45.3 mm | 42.7 mm | +2.6 |
| Feb | 123.7 mm | 127.8 mm | -4.1 |
| Mar | 53.8 mm | 55.1 mm | -1.3 |
| Apr | 25.4 mm | 23.2 mm | +2.2 |
| May | 16.5 mm | 14.2 mm | +2.3 |
| Jun | 68.1 mm | 64.2 mm | +3.9 |
| Jul | 63.1 mm | 63.5 mm | -0.4 |
| Aug | – | – | – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |