Bewolking — 2023
| Month | Houffalize | Bastogne | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 90.1 % | 91.8 % | -1.7 |
| Apr | 70.5 % | 71.6 % | -1.1 |
| May | 61.4 % | 61.8 % | -0.4 |
| Jun | 41.8 % | 41.7 % | +0.1 |
| Jul | 63.6 % | 63.9 % | -0.3 |
| Aug |
| 59.8 % |
| 59.5 % |
| +0.3 |
| Sep | 53.5 % | 53.8 % | -0.3 |
| Oct | 78.5 % | 78.5 % | +0.0 |
| Nov | 89.6 % | 90.9 % | -1.3 |
| Dec | 92.8 % | 94.6 % | -1.8 |