Southern Harbour Weather Forecast

    • 7
    • 17

    Possible shower

    • 11
    • 19

    Rain. Becoming windy

    • 7
    • 15

    Showers

    • 9
    • 17

    Showers

    • 10
    • 17

    Showers

    • 7
    • 15

    Shower or two

    • 6
    • 15

    Partly cloudy

Today 19 Jul Perth

Partly cloudy. Slight chance of a shower. Light winds becoming north to northwesterly 15 to 20 km/h in the late evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Northwesterly about 10 knots increasing to 15 to 20 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 3 metres.
Weather
Partly cloudy.
Weather Situation
A ridge located nearby is moving east. A strong cold front will cross the Local Waters later Sunday afternoon or early evening. A new ridge will develop to the north of the Local Waters on Monday, maintaining a westerly flow across the southwest coast. Another cold front will move through southwest WA on Wednesday.
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  • Temperature Forecast Bureau of Meteorology

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Southern Harbour Temperature Statistics View More

July Temperature

Garden Island (12km)

  • Lowest 17 July, 2025

    8.5 °C
  • Average July

    15.1 °C
  • Highest 1 July, 2025

    21.3 °C

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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