In August, Heerlen typically sees daytime highs of 21.7°C and overnight lows around 12.0°C. Compared to the annual average high of 13.3°C, August runs +8.4°C.
August in Heerlen averages a daytime high of 21.7°C and an overnight low of 12.0°C.
August runs +8.4°C compared to Heerlen's annual average high of 13.3°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 21.7°C and cooler evenings around 12.0°C.