Southern Harbour Weather Forecast

    • 10
    • 19

    Partly cloudy

    • 9
    • 21

    Sunny

    • 11
    • 21

    Partly cloudy

    • 11
    • 19

    Possible shower

    • 8
    • 18

    Sunny

    • 8
    • 19

    Showers

    • 11
    • 19

    Showers

Today 20 Aug Perth

Partly cloudy. Patchy fog early this morning, mainly about the hills. Slight chance of a shower in the southwest, most likely this afternoon. Near zero chance of rain elsewhere. Light winds.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Variable below 10 knots.
Seas
Below 0.5 metres.
1st Swell
West to southwesterly 2 to 3 metres.
Weather
Partly cloudy.
Weather Situation
A weak ridge lies across southern WA. A weak trough will deepen down the west coast from late Friday, pushing inland later on Saturday ahead of another weak front which is slated to reach the lower west coast during Sunday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Southern Harbour Temperature Statistics View More

August Temperature

Garden Island (12km)

  • Lowest 11 August, 2026

    7.7 °C

  • Average August

    14.8 °C

  • Highest 16 August, 2026

    23.7 °C

Climate (2021–2026)

Garden Island (12km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    23.3 °C
Get WillyWeather+ to remove ads