Secret Harbour Weather Forecast

    • 20
    • 31

    Mostly sunny

    • 20
    • 30

    Sunny

    • 19
    • 33

    Sunny

    • 19
    • 30

    Mostly sunny

    • 18
    • 30

    Mostly sunny

    • 19
    • 31

    Sunny

    • 20
    • 33

    Mostly sunny

Today 20 Mar Mandurah

Mostly sunny. Light winds becoming westerly 15 to 20 km/h in the middle of the day then turning south to southwesterly in the late afternoon.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
South to southwesterly about 10 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre by early evening.
Weather
Mostly sunny.
Weather Situation
A west coast trough will move inland later Saturday, ahead of a weak cold front brushing past the south coast on Sunday. A new ridge will arrive on the southwest coast on Sunday, building east along the south coast on Monday.
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  • Temperature Forecast Bureau of Meteorology

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Secret Harbour Temperature Statistics View More

March Temperature

Mandurah (13km)

  • Lowest 1 March, 2026

    13.3 °C

  • Average March

    23.8 °C

  • Highest 4 March, 2026

    35.5 °C

Climate (2021–Present)

Mandurah (13km)

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  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    19.2 °C

  • Average High 2021–2026

    23.8 °C
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