Zonneschijn — 2023
| Maand | Herk-de-Stad | Lummen | Verschil |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mrt | 137.4 uren | 137.8 uren | -0.4 |
| Apr | 215.9 uren | 224.1 uren | -8.2 |
| Mei | 344.6 uren | 348.8 uren | -4.2 |
| Jun | 390.4 uren | 393.9 uren | -3.5 |
| Jul | 346.4 uren | 351.1 uren | -4.7 |
| Aug |
| 312.2 uren |
| 315.1 uren |
| -2.9 |
| Sep | 290.1 uren | 290.9 uren | -0.8 |
| Okt | 200.5 uren | 202.6 uren | -2.1 |
| Nov | 109.9 uren | 114.6 uren | -4.7 |
| Dec | 69.4 uren | 69.1 uren | +0.3 |