Zonneschijn — 2025
| Maand | Alphen aan den Rijn | Waddinxveen | Verschil |
|---|---|---|---|
| Jan | 97.8 uren | 94.3 uren | +3.5 |
| Feb | 141.9 uren | 143.1 uren | -1.2 |
| Mrt | 301.2 uren | 299.8 uren | +1.4 |
| Apr | 323.6 uren | 322.1 uren | +1.5 |
| Mei | 382.6 uren | 376.7 uren | +5.9 |
| Jun | 402 uren | 396.3 uren | +5.7 |
| Jul | 393.4 uren | 381.2 uren | +12.2 |
| Aug | 346.1 uren | 344.7 uren | +1.4 |
| Sep | 274.5 uren | 272.5 uren | +2.0 |
| Okt | 154.5 uren | 147.7 uren | +6.8 |
| Nov | 123 uren | 121 uren | +2.0 |
| Dec | 96.7 uren | 93.9 uren | +2.8 |