Southern Harbour Weather Forecast

    • 8
    • 19

    Sunny

    • 8
    • 20

    Mostly sunny

    • 11
    • 21

    Showers

    • 12
    • 18

    Shower or two

    • 8
    • 18

    Partly cloudy

    • 9
    • 21

    Mostly sunny

    • 11
    • 21

    Possible shower

Today 24 Jul Perth

Sunny. Winds east to northeasterly 15 to 20 km/h becoming light in the middle of the day.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Easterly 10 to 15 knots turning northeasterly before dawn.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning.
Weather
Sunny.
Weather Situation
A high pressure centre near the western south coast extends a ridge over southern parts of the state. The ridge will persist over the region for the remainder of the week as the high pressure centre slowly moves east. A cold front will then cross the local waters on Sunday, followed by another ridge which will develop over southern WA from Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Southern Harbour Temperature Statistics View More

July Temperature

Garden Island (12km)

  • Lowest 8 July, 2026

    7 °C

  • Average July

    14.7 °C

  • Highest 15 July, 2026

    22.8 °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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