Third Rocks Weather Forecast

    • 24
    • 30

    Sunny

    • 19
    • 25

    Partly cloudy

    • 15
    • 26

    Sunny

    • 18
    • 26

    Shower or two

    • 18
    • 24

    Possible morning shower

    • 15
    • 28

    Becoming windy. Sunny

    • 17
    • 31

    Sunny

Today 22 Jan Perth

The chance of a thunderstorm in the southeast in the morning. Sunny afternoon. Winds west to northwesterly 15 to 25 km/h turning southwesterly 20 to 30 km/h in the late morning.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southwesterly 15 to 20 knots turning southerly in the evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres around midday.
1st Swell
Southwesterly around 1 metre.
Weather
Mostly sunny.
Weather Situation
A trough will move inland across the west coast today ahead of a weak cold front brushing the south coast on Friday. A weak ridge will then form in the southwest before another cold front approaches over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

January Temperature

Garden Island (8km)

  • Lowest 18 January, 2026

    15.3 °C

  • Average January

    23 °C

  • Highest 20 January, 2026

    38.3 °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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