Bewolking — 2026
| Maand | Hardinxveld-Giessendam | Sliedrecht | Verschil |
|---|---|---|---|
| Jan | 77.6 % | – | – |
| Feb | 81 % | – | – |
| Mrt | 52.2 % | 66.2 % | -14.0 |
| Apr | 78.2 % | 77.6 % | +0.6 |
| Mei | 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 | 72.1 % | 72.1 % | +0.0 |
| Okt | 64.4 % | 64.6 % | -0.2 |
| Nov | – | – | – |
| Dec | – | – | – |