Luchtvochtigheid — 2004
| Month | Ottignies-Louvain-la-Neuve | Court-Saint-Étienne | Difference |
|---|---|---|---|
| Jan | – | 86.8 % | – |
| Feb | – | 81.6 % | – |
| Mar | – | 78 % | – |
| Apr | – | 75.7 % | – |
| May | – | 73.7 % | – |
| Jun | – | 75.5 % | – |
| Jul | – | 76.3 % | – |
| Aug | – | 76.9 % | – |
| Sep |
| – |
| 75.1 % |
| – |
| Oct | – | 79.2 % | – |
| Nov | – | 88.2 % | – |
| Dec | – | 91.8 % | – |