Bewolking — 2025
| Month | Krimpen aan den IJssel | Capelle aan den IJssel | Difference |
|---|---|---|---|
| Jan | 79.9 % | – | – |
| Feb | 72.6 % | – | – |
| Mar | 42.4 % | – | – |
| Apr | 44.8 % | – | – |
| May | 47.7 % | – | – |
| Jun | 48.9 % | – | – |
| Jul | 56.6 % | – | – |
| Aug | 58.3 % | – | – |
| Sep |
| 60.3 % |
| – |
| – |
| Oct | 85.6 % | – | – |
| Nov | 76.3 % | – | – |
| Dec | 76 % | – | – |