Temperatuur — 2026
| Month | Vlieland | Harlingen | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 7.7 °C | 7.7 °C | +0.0 |
| Apr | 8.4 °C | 8.5 °C | -0.1 |
| May | 12.5 °C | 12.7 °C | -0.2 |
| Jun | 16.7 °C | 17 °C | -0.3 |
| Jul | 18.2 °C | 18.4 °C | -0.2 |
| Aug |
| 18.8 °C |
| 18.9 °C |
| -0.1 |
| Sep | 18.1 °C | 18 °C | +0.1 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |