Bewolking — 2026
| Month | Capelle aan den IJssel | Ridderkerk | Difference |
|---|---|---|---|
| Jan | – | 78.3 % | – |
| Feb | – | 81.5 % | – |
| Mar | 59.9 % | 53.1 % | +6.8 |
| Apr | 79.6 % | 78.6 % | +1.0 |
| May | 58.6 % | 59 % | -0.4 |
| Jun | 61 % | 61.6 % | -0.6 |
| Jul | 49.2 % | 47.4 % | +1.8 |
| Aug |
| 53.9 % |
| 54.3 % |
| -0.4 |
| Sep | 72.5 % | 72.6 % | -0.1 |
| Oct | 65.5 % | 65.5 % | +0.0 |
| Nov | – | – | – |
| Dec | – | – | – |