Temperatuur — 2026
| Month | Voorne aan Zee | Maassluis | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 7.6 °C | 7.8 °C | -0.2 |
| Apr | 9.1 °C | 9.4 °C | -0.3 |
| May | 14.9 °C | 14.4 °C | +0.5 |
| Jun | 18.7 °C | 18.4 °C | +0.3 |
| Jul | 20.2 °C | 19.7 °C | +0.5 |
| Aug |
| 19.8 °C |
| 19.5 °C |
| +0.3 |
| Sep | 17.5 °C | 17.4 °C | +0.1 |
| Oct | 13 °C | 13.1 °C | -0.1 |
| Nov | – | – | – |
| Dec | – | – | – |