Zonneschijn — 2023
| Month | Purmerend | Oostzaan | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 90.1 uren | 0 uren | +90.1 |
| Apr | 267.1 uren | 264.5 uren | +2.6 |
| May | 365.9 uren | 359.4 uren | +6.5 |
| Jun | 391.9 uren | 388.2 uren | +3.7 |
| Jul | 367.4 uren | 362.7 uren | +4.7 |
| Aug |
| 335.1 uren |
| 330.4 uren |
| +4.7 |
| Sep | 287.4 uren | 279 uren | +8.4 |
| Oct | 170.5 uren | 165 uren | +5.5 |
| Nov | 125.4 uren | 117.3 uren | +8.1 |
| Dec | 83.3 uren | 83 uren | +0.3 |