Gevoelstemperatuur — 2025
| Maand | Hardinxveld-Giessendam | Altena | Verschil |
|---|---|---|---|
| Jan | -0.1 °C | – | – |
| Feb | 0.1 °C | – | – |
| Mrt | 4.1 °C | – | – |
| Apr | 9.1 °C | – | – |
| Mei | 11.7 °C | – | – |
| Jun | 17.3 °C | – | – |
| Jul | 18.8 °C | – | – |
| Aug | 17.9 °C | – | – |
| Sep |
| 13.6 °C |
| – |
| – |
| Okt | 9.9 °C | – | – |
| Nov | 4.9 °C | – | – |
| Dec | 2.5 °C | – | – |