Bewolking — 2020
| Month | Kalmthout | Essen | Difference |
|---|---|---|---|
| Jan | 78 % | 78 % | +0.0 |
| Feb | 75 % | 75 % | +0.0 |
| Mar | 52.7 % | 52.7 % | +0.0 |
| Apr | 34 % | 34 % | +0.0 |
| May | 47.7 % | 47.7 % | +0.0 |
| Jun | 64.8 % | 64.8 % | +0.0 |
| Jul | 63 % | 63 % | +0.0 |
| Aug |
| 58.3 % |
| 58.3 % |
| +0.0 |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |