Swan River - Heirisson Island Weather Forecast

    • 5
    • 18

    Partly cloudy

    • 6
    • 21

    Mostly sunny

    • 7
    • 23

    Sunny

    • 11
    • 26

    Mostly sunny

    • 13
    • 22

    Showers

    • 12
    • 20

    Showers. Becoming windy

    • 9
    • 18

    Shower or two

Today 9 Sep Perth

Partly cloudy. Winds southeasterly 15 to 20 km/h becoming light in the late evening.

Melville Waters

Wind
Southeasterly below 10 knots.
Weather
Partly cloudy.
Weather Situation
Winds will remain east to southeasterly for the remainder of the week as a high pressure system moves eastward over the south of the state. Winds then freshen out of the north on Friday ahead of the next cold front.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Swan River - Heirisson Island Temperature Statistics View More

September Temperature

Perth Metro (5km)

  • Lowest 9 September, 2025

    3.9 °C

  • Average September

    12.3 °C

  • Highest 3 September, 2025

    21.3 °C

Climate (2020–Present)

Perth Metro (5km)

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  • Average Low 2020–2025

    13.4 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    25.5 °C
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