Green Island Weather Forecast

    • 17
    • 23

    Mostly sunny

    • 19
    • 23

    Mostly sunny

    • 16
    • 21

    Showers increasing

    • 13
    • 19

    Showers easing. Wind easing

    • 15
    • 19

    Cloudy

    • 15
    • 19

    Sunny

    • 15
    • 19

    Possible shower

Today 16 Sep Lower West

Mostly sunny. Medium chance of showers, most likely in the afternoon and early evening. The chance of a thunderstorm inland in the afternoon and early evening. Winds easterly 20 to 25 km/h turning northeasterly 20 to 30 km/h in the morning then decreasing to 15 to 20 km/h in the late afternoon. Daytime maximum temperatures around 30.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Variable below 10 knots.
Seas
Below 0.5 metres.
1st Swell
Southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres by early evening.
Weather
Partly cloudy.
Weather Situation
A trough extends down the west coast. From Thursday, the trough will become mobile and move inland, ahead of a cold front crossing the local waters on Friday before the next ridge begins to develop.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Green Island Temperature Statistics View More

September Temperature

Rottnest Island (1km)

  • Lowest 9 September, 2026

    11.5 °C

  • Average September

    16.1 °C

  • Highest 11 September, 2026

    23.3 °C

Climate (2021–2026)

Rottnest Island (1km)

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  • Average Low 2021–2026

    16.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    22.8 °C
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