Bewolking — 2026
| Month | Hardinxveld-Giessendam | Sliedrecht | Difference |
|---|---|---|---|
| Jan | 77.6 % | – | – |
| Feb | 81 % | – | – |
| Mar | 52.2 % | 66.2 % | -14.0 |
| Apr | 78.2 % | 77.6 % | +0.6 |
| May | 60 % | 60 % | +0.0 |
| Jun | 62.1 % | 62.1 % | +0.0 |
| Jul | 47.8 % | 47.8 % | +0.0 |
| Aug |
| 54.4 % |
| 54.4 % |
| +0.0 |
| Sep | 72.9 % | 73.3 % | -0.4 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |