Zonneschijn — 2023
| Maand | Alphen aan den Rijn | Kaag en Braassem | Verschil |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mrt | 0 uren | – | – |
| Apr | 249.8 uren | – | – |
| Mei | 349.2 uren | – | – |
| Jun | 390.8 uren | – | – |
| Jul | 368.9 uren | – | – |
| Aug | 334.3 uren | – | – |
| Sep |
| 280.1 uren |
| – |
| – |
| Okt | 169.8 uren | – | – |
| Nov | 117.9 uren | – | – |
| Dec | 78.3 uren | – | – |