Zonneschijn — 2020
| Maand | Harlingen | Vlieland | Verschil |
|---|---|---|---|
| Jan | 135.4 uren | 137.9 uren | -2.5 |
| Feb | 185 uren | 185.8 uren | -0.8 |
| Mrt | 305.6 uren | 306.4 uren | -0.8 |
| Apr | 370.8 uren | 370.9 uren | -0.1 |
| Mei | 432.4 uren | 432.7 uren | -0.3 |
| Jun | 429.7 uren | 432 uren | -2.3 |
| Jul | 419 uren | 420.2 uren | -1.2 |
| Aug | – | – | – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |