Mullalyup Weather Forecast

    • 9
    • 19

    Storm

    • 10
    • 17

    Shower

    • 8
    • 18

    Shower

    • 9
    • 16

    Shower

    • 5
    • 16

    Cloudy

    • 5
    • 20

    Partly cloudy

    • 7
    • 22

    Sunny

Today 27 Sep South West

Cloudy. High chance of showers, most likely in the afternoon. The chance of a thunderstorm in the afternoon and evening, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding in the east. Winds easterly 15 to 20 km/h becoming light in the middle of the day. Daytime maximum temperatures between 18 and 21.

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  • Temperature Forecast Bureau of Meteorology

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Mullalyup Temperature Statistics View More

September Temperature

Donnybrook (22km)

  • Lowest 11 September, 2026

    7.1 °C

  • Average September

    15.5 °C

  • Highest 16 September, 2026

    30 °C

Climate (2021–2026)

Donnybrook (22km)

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  • Average Low 2021–2026

    10.9 °C

  • Average 2021–2026

    16.3 °C

  • Average High 2021–2026

    24.3 °C
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