Zonneschijn — 2024
| Month | Alphen aan den Rijn | Leiderdorp | Difference |
|---|---|---|---|
| Jan | 115.7 uren | – | – |
| Feb | 100.3 uren | – | – |
| Mar | 193.6 uren | – | – |
| Apr | 273.1 uren | – | – |
| May | 344.3 uren | – | – |
| Jun | 342 uren | – | – |
| Jul | 327.6 uren | – | – |
| Aug | 353.6 uren | – | – |
| Sep | 269.7 uren | – | – |
| Oct | 188.3 uren | – | – |
| Nov | 108.7 uren | – | – |
| Dec | 59.9 uren | – | – |