Zonneschijn — 2023
| Month | Westland | Maassluis | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 84.4 uren | – | – |
| Apr | 255.8 uren | – | – |
| May | 364.9 uren | – | – |
| Jun | 403.6 uren | – | – |
| Jul | 368.6 uren | – | – |
| Aug | 343.1 uren | – | – |
| Sep |
| 281.9 uren |
| – |
| – |
| Oct | 182.6 uren | – | – |
| Nov | 119.4 uren | – | – |
| Dec | 82.3 uren | – | – |