In July, Perth typically sees daytime highs of 16.9°C and overnight lows around 8.3°C. Compared to the annual average high of 23.6°C, July runs -6.7°C.
July in Perth averages a daytime high of 16.9°C and an overnight low of 8.3°C.
July runs -6.7°C compared to Perth's annual average high of 23.6°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 16.9°C and cooler evenings around 8.3°C.