Third Rocks Weather Forecast

    • 19
    • 30

    Partly cloudy

    • 20
    • 25

    Rain

    • 17
    • 22

    Windy. Heavy rain

    • 19
    • 24

    Showers

    • 17
    • 22

    Showers

    • 18
    • 22

    Shower or two

    • 14
    • 22

    Partly cloudy

Today 26 Mar Perth

Partly cloudy. Medium chance of showers. The chance of a thunderstorm during the morning and afternoon. Damaging winds possible. Winds easterly 35 to 50 km/h.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Easterly 15 to 20 knots.
Seas
1 to 1.5 metres, decreasing below 1 metre around midday.
1st Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning.
Weather
Partly cloudy. The chance of a thunderstorm.
Weather Situation
A ridge is directing southeasterly winds over the local waters. An offshore trough will deepen today, with winds turning easterly. Towards the weekend, Severe Tropical Cyclone Narelle will most likely approach the west coast from the north.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

March Temperature

Garden Island (8km)

  • Lowest 1 March, 2026

    14.3 °C

  • Average March

    22.3 °C

  • Highest 18 March, 2026

    36.6 °C

Climate (2021–Present)

Garden Island (8km)

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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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