Zonneschijn — 2026
| Maand | Ridderkerk | Krimpen aan den IJssel | Verschil |
|---|---|---|---|
| Jan | 116.1 uren | 113.6 uren | +2.5 |
| Feb | 123.9 uren | 125.8 uren | -1.9 |
| Mrt | 270.9 uren | 270.3 uren | +0.6 |
| Apr | 29.2 uren | 28 uren | +1.2 |
| Mei | 420.1 uren | 422 uren | -1.9 |
| Jun | 420.7 uren | 423.6 uren | -2.9 |
| Jul | 371.3 uren | 372 uren | -0.7 |
| Aug | – | – | – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |