Bewolking — 2025
| Maand | Zwijndrecht | Ridderkerk | Verschil |
|---|---|---|---|
| Jan | 79 % | 79.7 % | -0.7 |
| Feb | 70.1 % | 72.3 % | -2.2 |
| Mrt | 39 % | 40.8 % | -1.8 |
| Apr | 46.5 % | 44.6 % | +1.9 |
| Mei | 52.2 % | 48.2 % | +4.0 |
| Jun | 51.3 % | 49.2 % | +2.1 |
| Jul | 54.2 % | 56.9 % | -2.7 |
| Aug |
| 55.9 % |
| 57.9 % |
| -2.0 |
| Sep | 59.9 % | 60.8 % | -0.9 |
| Okt | 83.9 % | 85.7 % | -1.8 |
| Nov | 76.4 % | 76.3 % | +0.1 |
| Dec | 73.5 % | 75.7 % | -2.2 |