Bewolking — 2023
| Month | Zaventem | Kraainem | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 84.9 % | 87.2 % | -2.3 |
| Apr | 69.4 % | 69.4 % | +0.0 |
| May | 60.9 % | 60.9 % | +0.0 |
| Jun | 40.1 % | 40.1 % | +0.0 |
| Jul | 63.8 % | 63.8 % | +0.0 |
| Aug |
| 60.6 % |
| 60.6 % |
| +0.0 |
| Sep | 56.9 % | 56.9 % | +0.0 |
| Oct | 75.7 % | 75.7 % | +0.0 |
| Nov | 77 % | 77 % | +0.0 |
| Dec | 83.8 % | 83.8 % | +0.0 |