Zonneschijn — 2026
| Month | Krimpen aan den IJssel | Ridderkerk | Difference |
|---|---|---|---|
| Jan | 113.6 uren | 116.1 uren | -2.5 |
| Feb | 125.8 uren | 123.9 uren | +1.9 |
| Mar | 270.3 uren | 270.9 uren | -0.6 |
| Apr | 28 uren | 29.2 uren | -1.2 |
| May | 422 uren | 420.1 uren | +1.9 |
| Jun | 423.6 uren | 420.7 uren | +2.9 |
| Jul | 440.8 uren | 439.4 uren | +1.4 |
| Aug | 392.6 uren | 391.8 uren | +0.8 |
| Sep | 309 uren | 306.4 uren | +2.6 |
| Oct | 236.6 uren | 234.5 uren | +2.1 |
| Nov | – | – | – |
| Dec | – | – | – |