Neerslag — 2026
| Month | Zwijndrecht | Ridderkerk | Difference |
|---|---|---|---|
| Jan | 76.6 mm | 96.4 mm | -19.8 |
| Feb | 98.3 mm | 63.5 mm | +34.8 |
| Mar | 59.9 mm | 64.7 mm | -4.8 |
| Apr | 9.8 mm | 3.6 mm | +6.2 |
| May | 94 mm | 67.4 mm | +26.6 |
| Jun | 81.1 mm | 79.3 mm | +1.8 |
| Jul | 13.4 mm | 14.3 mm | -0.9 |
| Aug |
| 70 mm |
| 57.1 mm |
| +12.9 |
| Sep | 52.1 mm | 61.7 mm | -9.6 |
| Oct | 99.9 mm | 90.1 mm | +9.8 |
| Nov | – | – | – |
| Dec | – | – | – |