Luchtvochtigheid — 2023
| Month | La Hulpe | Hoeilaart | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 79.9 % | 80.1 % | -0.2 |
| Apr | 77.1 % | 76.9 % | +0.2 |
| May | 76.5 % | 76.2 % | +0.3 |
| Jun | 61.7 % | 61.2 % | +0.5 |
| Jul | 71.1 % | 70.8 % | +0.3 |
| Aug |
| 78.4 % |
| 77.8 % |
| +0.6 |
| Sep | 76.9 % | 76.2 % | +0.7 |
| Oct | 80.7 % | 80.3 % | +0.4 |
| Nov | 87.8 % | 87.3 % | +0.5 |
| Dec | 87 % | 86.4 % | +0.6 |