Bewolking — 2026
| Month | Barendrecht | Rotterdam | Difference |
|---|---|---|---|
| Jan | – | 79.1 % | – |
| Feb | – | 81.8 % | – |
| Mar | 63.2 % | 55.9 % | +7.3 |
| Apr | 78.7 % | 81.8 % | -3.1 |
| May | 59 % | 58.6 % | +0.4 |
| Jun | 61.6 % | 61 % | +0.6 |
| Jul | 47.4 % | 49.2 % | -1.8 |
| Aug |
| 54.3 % |
| 53.9 % |
| +0.4 |
| Sep | 72.6 % | 72.5 % | +0.1 |
| Oct | 65.5 % | 66 % | -0.5 |
| Nov | – | – | – |
| Dec | – | – | – |