Third Rocks Weather Forecast

    • 9
    • 20

    Late showers

    • 12
    • 16

    Shower or two

    • 7
    • 17

    Sunny

    • 9
    • 19

    Sunny day. Late shower or two

    • 13
    • 19

    Showers easing

    • 13
    • 17

    Showers easing

    • 11
    • 18

    Showers

Today 31 Jul Perth

Partly cloudy. High chance of showers about the southern suburbs, medium chance elsewhere. Winds northwesterly 15 to 20 km/h becoming light in the late afternoon then becoming west to northwesterly 15 to 20 km/h in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
North to northwesterly 10 to 15 knots turning west to southwesterly 15 to 20 knots in the evening.
Seas
Around 1 metre.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Partly cloudy. 70% chance of showers.
Weather Situation
A ridge over local waters is slowly weakening. A weak cold front will move through this evening, followed by a new ridge over the weekend. A trough will develop along the west coast on Monday in association with a cloud band.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Third Rocks Temperature Statistics View More

July Temperature

Garden Island (8km)

  • Lowest 8 July, 2026

    7 °C

  • Average July

    14.6 °C

  • Highest 15 July, 2026

    22.8 °C

Climate (2021–2026)

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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