In October, Heidelberg typically sees daytime highs of 25.6°C and overnight lows around 10.0°C. Compared to the annual average high of 23.2°C, October runs +2.4°C.
October in Heidelberg averages a daytime high of 25.6°C and an overnight low of 10.0°C.
October runs +2.4°C compared to Heidelberg's annual average high of 23.2°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 25.6°C and cooler evenings around 10.0°C.