In August, Johannesburg typically sees daytime highs of 20.7°C and overnight lows around 3.6°C. Compared to the annual average high of 23.1°C, August runs -2.4°C.
August in Johannesburg averages a daytime high of 20.7°C and an overnight low of 3.6°C.
August runs -2.4°C compared to Johannesburg's annual average high of 23.1°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 20.7°C and cooler evenings around 3.6°C.