Bewolking — 2023
| Maand | Hoeilaart | La Hulpe | Verschil |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mrt | 86.5 % | 86.6 % | -0.1 |
| Apr | 69.7 % | 69.5 % | +0.2 |
| Mei | 60.9 % | 60.8 % | +0.1 |
| Jun | 39.8 % | 39.8 % | +0.0 |
| Jul | 63.7 % | 64.2 % | -0.5 |
| Aug |
| 61 % |
| 61 % |
| +0.0 |
| Sep | 57.4 % | 57.2 % | +0.2 |
| Okt | 76.5 % | 76.6 % | -0.1 |
| Nov | 77.8 % | 78.7 % | -0.9 |
| Dec | 83.9 % | 84.6 % | -0.7 |