Bewolking — 2020
| Maand | Capelle aan den IJssel | Ridderkerk | Verschil |
|---|---|---|---|
| Jan | 77.9 % | 78.3 % | -0.4 |
| Feb | 73.8 % | 74.4 % | -0.6 |
| Mrt | 53.2 % | 52.9 % | +0.3 |
| Apr | 37.7 % | 36 % | +1.7 |
| Mei | 46.5 % | 47.2 % | -0.7 |
| Jun | 65.7 % | 65 % | +0.7 |
| Jul | 62 % | 62.3 % | -0.3 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |