Zonneschijn — 2025
| Maand | Ridderkerk | Krimpen aan den IJssel | Verschil |
|---|---|---|---|
| Jan | 94.4 uren | 94.8 uren | -0.4 |
| Feb | 145 uren | 147.1 uren | -2.1 |
| Mrt | 303.2 uren | 305.5 uren | -2.3 |
| Apr | 328.9 uren | 329.1 uren | -0.2 |
| Mei | 375.3 uren | 378.4 uren | -3.1 |
| Jun | 391.5 uren | 394.6 uren | -3.1 |
| Jul | 389.5 uren | 390.6 uren |
| Aug | 338.2 uren | 344.5 uren | -6.3 |
| Sep | 271.4 uren | 272.6 uren | -1.2 |
| Okt | 141.1 uren | 150.5 uren | -9.4 |
| Nov | 114.8 uren | 119.2 uren | -4.4 |
| Dec | 99.9 uren | 98.3 uren | +1.6 |