Southern Harbour Weather Forecast

    • 16
    • 29

    Clear

    • 16
    • 30

    Sunny

    • 19
    • 32

    Sunny

    • 20
    • 30

    Mostly sunny

    • 19
    • 30

    Mostly sunny

    • 19
    • 27

    Sunny

    • 18
    • 27

    Sunny

Today 29 Dec Perth

Clear. Winds southeasterly 20 to 30 km/h.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 15 to 25 knots, reaching up to 30 knots in the evening. Winds turning southeasterly in the evening.
Seas
1.5 to 2 metres.
1st Swell
Southwesterly below 1 metre.
Weather
Clear.
Weather Situation
A ridge sits along the south coast, driving a southeasterly airstream over the local waters. A trough will develop down the west coast from Tuesday, moving inland on Thursday or Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Southern Harbour Temperature Statistics View More

December Temperature

Garden Island (12km)

  • Lowest 21 December, 2025

    13.9 °C

  • Average December

    22.1 °C

  • Highest 25 December, 2025

    41.8 °C

Climate (2020–Present)

Garden Island (12km)

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  • Average Low 2020–2025

    15.2 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    23.4 °C
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