Bewolking — 2026
| Maand | Zwijndrecht | Ridderkerk | Verschil |
|---|---|---|---|
| Jan | 76.7 % | 78.3 % | -1.6 |
| Feb | 81.4 % | 81.5 % | -0.1 |
| Mrt | 55.2 % | 53.1 % | +2.1 |
| Apr | 58.5 % | 78.6 % | -20.1 |
| Mei | 59.2 % | 59 % | +0.2 |
| Jun | 62.2 % | 61.6 % | +0.6 |
| Jul | 43.9 % | 47.4 % | -3.5 |
| Aug |
| 54 % |
| 54.3 % |
| -0.3 |
| Sep | 70.7 % | 72.6 % | -1.9 |
| Okt | 61.5 % | 65.5 % | -4.0 |
| Nov | – | – | – |
| Dec | – | – | – |