Zonneschijn — 2026
| Month | Alphen aan den Rijn | Kaag en Braassem | Difference |
|---|---|---|---|
| Jan | 108.9 uren | – | – |
| Feb | 124.9 uren | – | – |
| Mar | 266.3 uren | 19.6 uren | +246.7 |
| Apr | 30.6 uren | 31.7 uren | -1.1 |
| May | 420.4 uren | 422.2 uren | -1.8 |
| Jun | 420.9 uren | 423.6 uren | -2.7 |
| Jul | 439.2 uren | 440.5 uren | -1.3 |
| Aug |
| 390 uren |
| 390.7 uren |
| -0.7 |
| Sep | 307.6 uren | 308.8 uren | -1.2 |
| Oct | 231.7 uren | 234.6 uren | -2.9 |
| Nov | – | – | – |
| Dec | – | – | – |