Zonneschijn — 2023
| Month | Spa | Verviers | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 120.5 uren | 130.4 uren | -9.9 |
| Apr | 231.4 uren | 233 uren | -1.6 |
| May | 332.2 uren | 337.8 uren | -5.6 |
| Jun | 390.5 uren | 394.1 uren | -3.6 |
| Jul | 334 uren | 337.7 uren | -3.7 |
| Aug |
| 287.4 uren |
| 294.8 uren |
| -7.4 |
| Sep | 294.1 uren | 295.9 uren | -1.8 |
| Oct | 194.8 uren | 199.8 uren | -5.0 |
| Nov | 76.7 uren | 84.3 uren | -7.6 |
| Dec | 67.3 uren | 71.3 uren | -4.0 |