Temperatuur — 2026
| Maand | Zwijndrecht | Alblasserdam | Verschil |
|---|---|---|---|
| Jan | 3.5 °C | – | – |
| Feb | 6.9 °C | – | – |
| Mrt | 8.8 °C | 8 °C | +0.8 |
| Apr | 11.8 °C | 10 °C | +1.8 |
| Mei | 15.4 °C | 15 °C | +0.4 |
| Jun | 19.6 °C | 19.3 °C | +0.3 |
| Jul | 20.7 °C | 20.2 °C | +0.5 |
| Aug |
| 20.1 °C |
| 19.5 °C |
| +0.6 |
| Sep | 17.8 °C | 17.8 °C | +0.0 |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |