In August, Horsham typically sees daytime highs of 20.8°C and overnight lows around 11.6°C. Compared to the annual average high of 13.7°C, August runs +7.2°C.
August in Horsham averages a daytime high of 20.8°C and an overnight low of 11.6°C.
August runs +7.2°C compared to Horsham's annual average high of 13.7°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 20.8°C and cooler evenings around 11.6°C.