Bewolking — 2020
| Maand | Tholen | Goeree-Overflakkee | Verschil |
|---|---|---|---|
| Jan | 77.5 % | 77 % | +0.5 |
| Feb | 75.1 % | 74.1 % | +1.0 |
| Mrt | 52.4 % | 52.2 % | +0.2 |
| Apr | 33.9 % | 35.1 % | -1.2 |
| Mei | 46.7 % | 45.8 % | +0.9 |
| Jun | 63.5 % | 63.4 % | +0.1 |
| Jul | 61 % | 59.7 % | +1.3 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |