Bewolking — 2023
| Month | Chièvres | Lens | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 87.3 % | 86.1 % | +1.2 |
| Apr | 68.5 % | 68.5 % | +0.0 |
| May | 59.8 % | 59.8 % | +0.0 |
| Jun | 40.4 % | 40.4 % | +0.0 |
| Jul | 62.4 % | 62.4 % | +0.0 |
| Aug |
| 59.6 % |
| 59.6 % |
| +0.0 |
| Sep | 56.8 % | 56.8 % | +0.0 |
| Oct | 76.4 % | 76.4 % | +0.0 |
| Nov | 77.7 % | 77.7 % | +0.0 |
| Dec | 84 % | 84 % | +0.0 |