Alcoa Jetty Weather Forecast

    • 13
    • 20

    Partly cloudy

    • 12
    • 18

    Shower or two

    • 13
    • 20

    Shower or two

    • 15
    • 19

    Showers

    • 13
    • 19

    Shower or two

    • 14
    • 19

    Showers

    • 11
    • 18

    Possible shower

Today 25 Sep Perth

Partly cloudy. Medium chance of showers in the afternoon and evening. Winds southeasterly 25 to 40 km/h increasing to 30 to 45 km/h in the late evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 10 to 15 knots turning southeasterly 15 to 25 knots before dawn. Winds reaching up to 30 knots in the evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning, then increasing to 1.5 to 2.5 metres during the afternoon.
1st Swell
Southwesterly 1 to 2 metres, increasing to 2 to 3 metres around midday.
Weather
Partly cloudy.
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  • Temperature Forecast Bureau of Meteorology

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Alcoa Jetty Temperature Statistics View More

September Temperature

Garden Island (10km)

  • Lowest 1 September, 2026

    10.2 °C

  • Average September

    16.7 °C

  • Highest 16 September, 2026

    29.3 °C

Climate (2021–2026)

Garden Island (10km)

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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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