In April, Heerlen typically sees daytime highs of 13.1°C and overnight lows around 3.4°C. Compared to the annual average high of 13.3°C, April runs -0.3°C.
April in Heerlen averages a daytime high of 13.1°C and an overnight low of 3.4°C.
April runs -0.3°C compared to Heerlen's annual average high of 13.3°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 13.1°C and cooler evenings around 3.4°C.