Zonneschijn — 2023
| Monat | Alkmaar | Heiloo | Unterschied |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mär | 87.9 uren | – | – |
| Apr | 259.3 uren | – | – |
| Mai | 360.9 uren | – | – |
| Jun | 393.4 uren | – | – |
| Jul | 366.2 uren | – | – |
| Aug | 332.2 uren | – | – |
| Sep |
| 273.5 uren |
| – |
| – |
| Okt | 164.4 uren | – | – |
| Nov | 119.8 uren | – | – |
| Dez | 83.8 uren | – | – |