Southern Harbour Weather Forecast

    • 13
    • 19

    Sunny

    • 9
    • 17

    Becoming cloudy

    • 9
    • 18

    Partly cloudy

    • 8
    • 18

    Mostly sunny

    • 8
    • 21

    Sunny

    • 12
    • 22

    Mostly sunny

    • 14
    • 21

    Showers

Today 10 Jul Perth

Mostly sunny. Slight chance of a shower about the northern suburbs, near zero chance elsewhere. Winds south to southwesterly 15 to 20 km/h becoming light in the late afternoon.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 10 to 15 knots.
Seas
Below 1 metre.
1st Swell
West to southwesterly 1 to 2 metres.
Weather
Mostly sunny.
Weather Situation
A weak cold front will brush the south coast overnight on Friday. A ridge will begin to move over southwest WA from Friday evening and will slowly extend east over the coming days. A trough will extend down the west coast on Monday.
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  • Temperature Forecast Bureau of Meteorology

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Southern Harbour Temperature Statistics View More

July Temperature

Garden Island (12km)

  • Lowest 8 July, 2026

    7 °C

  • Average July

    14.4 °C

  • Highest 8 July, 2026

    20.1 °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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