Bewolking — 2023
| Month | Ermelo | Harderwijk | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 100 % | 86.1 % | +13.9 |
| Apr | 63.6 % | 63.7 % | -0.1 |
| May | 67.9 % | 68.7 % | -0.8 |
| Jun | 45.3 % | 44.8 % | +0.5 |
| Jul | 66.3 % | 65.8 % | +0.5 |
| Aug |
| 63.1 % |
| 62.8 % |
| +0.3 |
| Sep | 62 % | 62.3 % | -0.3 |
| Oct | 82.1 % | 82 % | +0.1 |
| Nov | 77.1 % | 76.8 % | +0.3 |
| Dec | 85.1 % | 84.9 % | +0.2 |