Zonneschijn — 2023
| Month | Zwijndrecht | Ridderkerk | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 121.4 uren | 0 uren | +121.4 |
| Apr | 239.3 uren | 247.7 uren | -8.4 |
| May | 349 uren | 353.9 uren | -4.9 |
| Jun | 396.4 uren | 392.6 uren | +3.8 |
| Jul | 345.2 uren | 351.8 uren | -6.6 |
| Aug |
| 319.4 uren |
| 332.3 uren |
| -12.9 |
| Sep | 276.8 uren | 276.2 uren | +0.6 |
| Oct | 196.2 uren | 177.3 uren | +18.9 |
| Nov | 121.8 uren | 122.8 uren | -1.0 |
| Dec | 71.9 uren | 73.3 uren | -1.4 |