In April, Heilbron typically sees daytime highs of 23.5°C and overnight lows around 8.1°C. Compared to the annual average high of 24.1°C, April runs -0.6°C.
April in Heilbron averages a daytime high of 23.5°C and an overnight low of 8.1°C.
April runs -0.6°C compared to Heilbron's annual average high of 24.1°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 23.5°C and cooler evenings around 8.1°C.