Zonneschijn — 2026
| Maand | Katwijk | Voorschoten | Verschil |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mrt | 21.8 uren | 21.1 uren | +0.7 |
| Apr | 30 uren | 31 uren | -1.0 |
| Mei | 423.6 uren | 422 uren | +1.6 |
| Jun | 425.8 uren | 423.8 uren | +2.0 |
| Jul | 370.8 uren | 369.8 uren | +1.0 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |