Southern Harbour Weather Forecast

    • 13
    • 22

    Showers increasing

    • 13
    • 20

    Showers. Possible storm

    • 10
    • 19

    Partly cloudy

    • 9
    • 19

    Possible shower

    • 12
    • 21

    Showers. Windy

    • 13
    • 19

    Showers. Windy

    • 9
    • 17

    Shower or two

Today 2 Jul Perth

Partly cloudy. Very high chance of showers, most likely in the afternoon and evening. The chance of a thunderstorm in the late afternoon and evening. Winds northerly 15 to 20 km/h becoming light in the middle of the day then becoming north to northeasterly 15 to 20 km/h in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Northeasterly 10 to 15 knots turning northerly 15 to 25 knots in the middle of the day.
Seas
Around 1 metre.
1st Swell
West to southwesterly 1.5 to 2 metres, decreasing to 1.5 metres by early evening.
Weather
Partly cloudy. 95% chance of showers. The chance of a thunderstorm in the afternoon and evening, possibly severe with large hail.
Weather Situation
A weak ridge moves east ahead of a cold front moving over the area later today and into Thursday. A new high pressure system moves over the state Friday and Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Southern Harbour Temperature Statistics View More

July Temperature

Garden Island (12km)

  • Lowest 1 July, 2025

    16.4 °C

  • Average July

    18.2 °C

  • Highest

    –

Climate (2020–Present)

Garden Island (12km)

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  • Average Low 2020–2025

    15.2 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    23.4 °C
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