In July, Heidelberg typically sees daytime highs of 24.3°C and overnight lows around 13.3°C. Compared to the annual average high of 14.2°C, July runs +10.1°C.
July in Heidelberg averages a daytime high of 24.3°C and an overnight low of 13.3°C.
July runs +10.1°C compared to Heidelberg's annual average high of 14.2°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 24.3°C and cooler evenings around 13.3°C.