Secret Harbour Weather Forecast

    • 21
    • 29

    Partly cloudy

    • 20
    • 25

    Partly cloudy

    • 17
    • 32

    Sunny

    • 18
    • 30

    Sunny

    • 17
    • 30

    Sunny

    • 15
    • 29

    Sunny

    • 17
    • 31

    Sunny

Today 16 Dec Mandurah

Partly cloudy. Winds southwesterly 15 to 20 km/h becoming light in the late evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southwesterly 10 to 15 knots decreasing to about 10 knots in the late evening.
Seas
Below 1 metre.
1st Swell
West to southwesterly around 1 metre.
Weather
Partly cloudy.
Weather Situation
A trough continues to move inland today, followed by a new ridge building across the southwest coast from Wednesday. A new west coast trough will form on Friday.
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  • Temperature Forecast Bureau of Meteorology

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Secret Harbour Temperature Statistics View More

December Temperature

Mandurah (13km)

  • Lowest 4 December, 2025

    16.1 °C

  • Average December

    23.6 °C

  • Highest 14 December, 2025

    40.1 °C

Climate (2020–Present)

Mandurah (13km)

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  • Average Low 2020–2025

    15.1 °C

  • Average 2020–2025

    19.2 °C

  • Average High 2020–2025

    23.8 °C
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