Alcoa Jetty Weather Forecast

    • 8
    • 16

    Mostly sunny

    • 12
    • 18

    Showers increasing. Windy

    • 8
    • 15

    Showers easing

    • 9
    • 16

    Showers

    • 12
    • 17

    Showers

    • 9
    • 15

    Shower or two

    • 9
    • 16

    Partly cloudy

Today 19 Jul Perth

Mostly sunny day. The chance of fog and frost about the hills early this morning. Slight chance of a shower late this afternoon and evening. Light winds.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
East to northeasterly 10 to 15 knots turning north to northwesterly during the afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 2.5 to 4 metres, decreasing to 2 to 3 metres during the morning.
Weather
Mostly sunny.
Weather Situation
A weak cold front will dissipate over eastern parts of the South West Land Division on Friday evening, with a ridge extending over southern parts of the State during Friday night and Saturday. A strong cold front will cross the South West Land Division during Sunday afternoon and evening, continuing east on Monday as a ridge extends across the southern half of WA.
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  • Temperature Forecast Bureau of Meteorology

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Alcoa Jetty Temperature Statistics View More

July Temperature

Garden Island (10km)

  • Lowest 17 July, 2025

    8.5 °C

  • Average July

    15.1 °C

  • Highest 1 July, 2025

    21.3 °C

Climate (2020–Present)

Garden Island (10km)

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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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