Zonneschijn — 2026
| Month | Ridderkerk | Zwijndrecht | Difference |
|---|---|---|---|
| Jan | 116.1 uren | 118.4 uren | -2.3 |
| Feb | 123.9 uren | 120.1 uren | +3.8 |
| Mar | 270.9 uren | 269.3 uren | +1.6 |
| Apr | 29.2 uren | 292.3 uren | -263.1 |
| May | 420.1 uren | 413.8 uren | +6.3 |
| Jun | 420.7 uren | 418.8 uren | +1.9 |
| Jul | 439.4 uren | 437.8 uren | +1.6 |
| Aug | 391.8 uren | 389.5 uren | +2.3 |
| Sep | 306.4 uren | 304.9 uren | +1.5 |
| Oct | 236.6 uren | 235.8 uren | +0.8 |
| Nov | – | – | – |
| Dec | – | – | – |