Temperatuur — 2026
| Month | Barendrecht | Zwijndrecht | Difference |
|---|---|---|---|
| Jan | – | 3.5 °C | – |
| Feb | – | 6.9 °C | – |
| Mar | 7.9 °C | 8.8 °C | -0.9 |
| Apr | 9.8 °C | 11.8 °C | -2.0 |
| May | 15 °C | 15.4 °C | -0.4 |
| Jun | 19.2 °C | 19.6 °C | -0.4 |
| Jul | 20.2 °C | 20.7 °C | -0.5 |
| Aug |
| 19.6 °C |
| 20.1 °C |
| -0.5 |
| Sep | 17.6 °C | 17.8 °C | -0.2 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |