Bewolking — 2026
| Month | Sliedrecht | Hardinxveld-Giessendam | Difference |
|---|---|---|---|
| Jan | – | 77.6 % | – |
| Feb | – | 81 % | – |
| Mar | 66.2 % | 52.2 % | +14.0 |
| Apr | 77.6 % | 78.2 % | -0.6 |
| May | 60 % | 60 % | +0.0 |
| Jun | 62.1 % | 62.1 % | +0.0 |
| Jul | 50.6 % | 51 % | -0.4 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |