Temperatuur — 2025
| Month | Goeree-Overflakkee | Voorne aan Zee | Difference |
|---|---|---|---|
| Jan | 4.1 °C | – | – |
| Feb | 4 °C | – | – |
| Mar | 7.1 °C | – | – |
| Apr | 11.4 °C | – | – |
| May | 14 °C | – | – |
| Jun | 18 °C | – | – |
| Jul | 18.7 °C | – | – |
| Aug | 18.6 °C | – | – |
| Sep |
| 15.5 °C |
| – |
| – |
| Oct | 12.6 °C | – | – |
| Nov | 8.5 °C | – | – |
| Dec | 6.3 °C | – | – |