Zonneschijn — 2023
| Monat | Rotterdam | Lansingerland | Unterschied |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mär | 85.8 uren | 0 uren | +85.8 |
| Apr | 251.6 uren | 253.4 uren | -1.8 |
| Mai | 360.9 uren | 363.1 uren | -2.2 |
| Jun | 400.6 uren | 400 uren | +0.6 |
| Jul | 365.5 uren | 368.8 uren | -3.3 |
| Aug |
| 339.8 uren |
| 343.2 uren |
| -3.4 |
| Sep | 282.3 uren | 283.5 uren | -1.2 |
| Okt | 183.2 uren | 181.9 uren | +1.3 |
| Nov | 122.4 uren | 119.8 uren | +2.6 |
| Dez | 78.8 uren | 81.1 uren | -2.3 |