Bewolking — 2026
| Month | Brunssum | Heerlen | Difference |
|---|---|---|---|
| Jan | – | 82.1 % | – |
| Feb | – | 79.2 % | – |
| Mar | 81.2 % | 50.3 % | +30.9 |
| Apr | 72.9 % | 72.6 % | +0.3 |
| May | 59.4 % | 59.4 % | +0.0 |
| Jun | 61.6 % | 61.6 % | +0.0 |
| Jul | 48.7 % | 48.7 % | +0.0 |
| Aug |
| 53.4 % |
| 53.4 % |
| +0.0 |
| Sep | 68.1 % | 68.1 % | +0.0 |
| Oct | 59.4 % | 58.9 % | +0.5 |
| Nov | – | – | – |
| Dec | – | – | – |