Zonneschijn — 2026
| Month | Maassluis | Vlaardingen | Difference |
|---|---|---|---|
| Jan | – | 117.1 uren | – |
| Feb | – | 124.9 uren | – |
| Mar | 19.7 uren | 159.6 uren | -139.9 |
| Apr | 30 uren | 29.6 uren | +0.4 |
| May | 423.5 uren | 423.5 uren | +0.0 |
| Jun | 425.1 uren | 425 uren | +0.1 |
| Jul | 391.6 uren | 392.1 uren | -0.5 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |