Temperatuur — 2026
| Month | Goeree-Overflakkee | Nissewaard | Difference |
|---|---|---|---|
| Jan | 3.6 °C | – | – |
| Feb | 6.3 °C | – | – |
| Mar | 8.4 °C | 7.3 °C | +1.1 |
| Apr | 9.2 °C | 9 °C | +0.2 |
| May | 14.9 °C | 15 °C | -0.1 |
| Jun | 18.7 °C | 19 °C | -0.3 |
| Jul | 20.2 °C | 20.3 °C | -0.1 |
| Aug |
| 19.8 °C |
| 19.7 °C |
| +0.1 |
| Sep | 17.5 °C | 17.2 °C | +0.3 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |