Neerslag — 2020
| Maand | Barendrecht | Rotterdam | Verschil |
|---|---|---|---|
| Jan | 45.3 mm | 50.7 mm | -5.4 |
| Feb | 123.7 mm | 117.9 mm | +5.8 |
| Mrt | 53.8 mm | 48.1 mm | +5.7 |
| Apr | 25.4 mm | 27.7 mm | -2.3 |
| Mei | 16.5 mm | 14.3 mm | +2.2 |
| Jun | 68.1 mm | 60.4 mm | +7.7 |
| Jul | 63.1 mm | 58 mm | +5.1 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |