In April, Heidelberg typically sees daytime highs of 22.7°C and overnight lows around 8.2°C. Compared to the annual average high of 23.2°C, April runs -0.5°C.
April in Heidelberg averages a daytime high of 22.7°C and an overnight low of 8.2°C.
April runs -0.5°C compared to Heidelberg's annual average high of 23.2°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 22.7°C and cooler evenings around 8.2°C.