Germany
Weather in Heidelberg through the year
The average of the weather stations Kaiserslautern (69 km), Geisenheim (83 km) and Strasbourg-Entzheim (122 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 4.9 °C | 4.4 °C – 5.5 °C |
| February | 6.9 °C | 5.6 °C – 8.8 °C |
| March | 11.4 °C | 9.0 °C – 13.7 °C |
| April | 15.9 °C | 13.8 °C – 17.8 °C |
| May | 20.2 °C | 18.0 °C – 22.3 °C |
| June | 24.1 °C | 22.4 °C – 25.6 °C |
| July | 25.8 °C | 25.4 °C – 26.4 °C |
| August | 25.4 °C | 23.7 °C – 26.2 °C |
| September | 21.1 °C | 17.9 °C – 23.6 °C |
| October | 15.3 °C | 12.4 °C – 17.7 °C |
| November | 8.8 °C | 6.2 °C – 12.1 °C |
| December | 5.7 °C | 5.4 °C – 6.1 °C |