Southern Harbour Weather Forecast

    • 13
    • 19

    Partly cloudy

    • 12
    • 19

    Partly cloudy

    • 9
    • 19

    Shower or two

    • 12
    • 18

    Showers. Becoming windy

    • 11
    • 17

    Showers easing. Windy

    • 9
    • 17

    Showers increasing

    • 9
    • 17

    Showers

Today 4 Aug Perth

Partly cloudy. Medium chance of showers, becoming less likely in the early afternoon. Winds west to southwesterly 15 to 20 km/h becoming light in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
West to southwesterly 10 to 15 knots decreasing to about 10 knots in the middle of the day.
Seas
Around 1 metre.
1st Swell
West to southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres during the morning.
Weather
Partly cloudy.
Weather Situation
A trough lies inland of the west coast and is expected to continue moving east on Tuesday, followed by a cold front along the southwest coast. A weak ridge will briefly return on Wednesday, before weakening on Thursday ahead of the next cold front.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Southern Harbour Temperature Statistics View More

August Temperature

Garden Island (12km)

  • Lowest 2 August, 2026

    9.2 °C

  • Average August

    13.5 °C

  • Highest 2 August, 2026

    17.6 °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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