Zonneschijn — 2026
| Month | Katwijk | Voorschoten | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 21.8 uren | 21.1 uren | +0.7 |
| Apr | 30 uren | 31 uren | -1.0 |
| May | 423.6 uren | 422 uren | +1.6 |
| Jun | 425.8 uren | 423.8 uren | +2.0 |
| Jul | 441.4 uren | 440.7 uren | +0.7 |
| Aug |
| 393 uren |
| 392.6 uren |
| +0.4 |
| Sep | 309.9 uren | 309 uren | +0.9 |
| Oct | 236.1 uren | 234.6 uren | +1.5 |
| Nov | – | – | – |
| Dec | – | – | – |