Mary Street Lagoon Weather Forecast

    • 19
    • 32

    Sunny

    • 21
    • 32

    Mostly sunny

    • 20
    • 32

    Mostly sunny

    • 20
    • 31

    Sunny

    • 21
    • 31

    Sunny

    • 20
    • 30

    Sunny

    • 19
    • 29

    Sunny

Today 31 Dec Mandurah

Sunny. Winds easterly 15 to 25 km/h becoming light in the morning then becoming southeast to southwesterly 20 to 30 km/h in the middle of the day.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Easterly 10 to 15 knots becoming variable about 10 knots in the morning then becoming southerly 15 to 20 knots in the early afternoon.
Seas
Around 1 metre.
1st Swell
Southwesterly around 1 metre.
Weather
Sunny.
Weather Situation
A ridge sits along the south coast, driving a easterly airstream over the local waters. A trough developing down the west coast moves inland on Thursday or Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mary Street Lagoon Temperature Statistics View More

December Temperature

Garden Island (31km)

  • Lowest 21 December, 2025

    13.9 °C

  • Average December

    22.1 °C

  • Highest 25 December, 2025

    41.8 °C

Climate (2020–Present)

Garden Island (31km)

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  • Average Low 2020–2025

    15.1 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    23.3 °C
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