Temperatuur — 2026
| Maand | Tholen | Goeree-Overflakkee | Verschil |
|---|---|---|---|
| Jan | – | 3.6 °C | – |
| Feb | – | 6.3 °C | – |
| Mrt | 7.3 °C | 8.4 °C | -1.1 |
| Apr | 9.2 °C | 9.2 °C | +0.0 |
| Mei | 15.4 °C | 14.9 °C | +0.5 |
| Jun | 19.2 °C | 18.7 °C | +0.5 |
| Jul | 20.3 °C | 19.9 °C | +0.4 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |