Bewolking — 2020
| Month | Opsterland | Achtkarspelen | Difference |
|---|---|---|---|
| Jan | 82 % | 82.1 % | -0.1 |
| Feb | 74.3 % | 74.2 % | +0.1 |
| Mar | 52.3 % | 53.1 % | -0.8 |
| Apr | 42.4 % | 44.4 % | -2.0 |
| May | 48.6 % | 49.7 % | -1.1 |
| Jun | 71 % | 70.5 % | +0.5 |
| Jul | 63.6 % | 65.3 % | -1.7 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |