Zonneschijn — 2026
| Month | Velsen | Heemskerk | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 23 uren | 22.8 uren | +0.2 |
| Apr | 38.5 uren | 38 uren | +0.5 |
| May | 424.9 uren | 424.2 uren | +0.7 |
| Jun | 427.2 uren | 426 uren | +1.2 |
| Jul | 441.4 uren | 440.8 uren | +0.6 |
| Aug |
| 393.7 uren |
| 392.2 uren |
| +1.5 |
| Sep | 88.4 uren | 88.9 uren | -0.5 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |