Zonneschijn — 2025
| Month | Rotterdam | Lansingerland | Difference |
|---|---|---|---|
| Jan | 97.8 uren | 99.2 uren | -1.4 |
| Feb | 150.8 uren | 149.2 uren | +1.6 |
| Mar | 311 uren | 313.1 uren | -2.1 |
| Apr | 336.7 uren | 334.2 uren | +2.5 |
| May | 377.7 uren | 380.6 uren | -2.9 |
| Jun | 403.8 uren | 405 uren | -1.2 |
| Jul | 403.8 uren | 403.7 uren | +0.1 |
| Aug | 355.4 uren | 356.2 uren | -0.8 |
| Sep | 279.5 uren | 280.4 uren | -0.9 |
| Oct | 159 uren | 163.3 uren | -4.3 |
| Nov | 122.3 uren | 126.2 uren | -3.9 |
| Dec | 103.3 uren | 103.7 uren | -0.4 |