Zonneschijn — 2025
| Month | Simpelveld | Heerlen | Difference |
|---|---|---|---|
| Jan | – | 111.8 uren | – |
| Feb | – | 151 uren | – |
| Mar | – | 282.5 uren | – |
| Apr | – | 312.8 uren | – |
| May | – | 357.2 uren | – |
| Jun | – | 393.3 uren | – |
| Jul | – | 371.8 uren | – |
| Aug | – | 331.9 uren | – |
| Sep |
| – |
| 267.3 uren |
| – |
| Oct | – | 134.4 uren | – |
| Nov | – | 135.4 uren | – |
| Dec | – | 111.7 uren | – |