Southern Harbour Weather Forecast

    • 12
    • 23

    Partly cloudy

    • 15
    • 20

    Morning showers

    • 13
    • 20

    Cloudy

    • 12
    • 23

    Sunny

    • 13
    • 26

    Partly cloudy

    • 17
    • 28

    Sunny

    • 18
    • 24

    Sunny

Today 11 Sep Perth

Partly cloudy. Winds northwesterly 15 to 20 km/h.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Northwesterly 15 to 20 knots.
Seas
Below 1 metre.
1st Swell
West to southwesterly 1.5 to 2 metres.
Weather
Partly cloudy.
Weather Situation
Winds will tend north to northwesterly today ahead of a weak cold front passing through the area on Saturday morning, followed by another cold front brushing the southwest coast later on Sunday. A west coast trough extends over the local waters from Tuesday.
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  • Temperature Forecast Bureau of Meteorology

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Southern Harbour Temperature Statistics View More

September Temperature

Garden Island (12km)

  • Lowest 1 September, 2026

    10.2 °C

  • Average September

    15.7 °C

  • Highest 9 September, 2026

    21.8 °C

Climate (2021–2026)

Garden Island (12km)

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  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    23.3 °C
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