Zonneschijn — 2025
| Month | Capelle aan den IJssel | Krimpen aan den IJssel | Difference |
|---|---|---|---|
| Jan | – | 94.8 uren | – |
| Feb | – | 147.1 uren | – |
| Mar | – | 305.5 uren | – |
| Apr | – | 329.1 uren | – |
| May | – | 378.4 uren | – |
| Jun | – | 394.6 uren | – |
| Jul | – | 390.6 uren | – |
| Aug | – | 344.5 uren | – |
| Sep | – | 272.6 uren | – |
| Oct | – | 150.5 uren | – |
| Nov | – | 119.2 uren | – |
| Dec | – | 98.3 uren | – |