Zonneschijn — 2025
| Month | Barendrecht | Rotterdam | Difference |
|---|---|---|---|
| Jan | – | 97.8 uren | – |
| Feb | – | 150.8 uren | – |
| Mar | – | 311 uren | – |
| Apr | – | 336.7 uren | – |
| May | – | 377.7 uren | – |
| Jun | – | 403.8 uren | – |
| Jul | – | 403.8 uren | – |
| Aug | – | 355.4 uren | – |
| Sep |
| – |
| 279.5 uren |
| – |
| Oct | – | 159 uren | – |
| Nov | – | 122.3 uren | – |
| Dec | – | 103.3 uren | – |