In July, Heerlen typically sees daytime highs of 21.9°C and overnight lows around 12.1°C. Compared to the annual average high of 13.3°C, July runs +8.5°C.
July in Heerlen averages a daytime high of 21.9°C and an overnight low of 12.1°C.
July runs +8.5°C compared to Heerlen's annual average high of 13.3°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 21.9°C and cooler evenings around 12.1°C.