Rottnest Island Airport 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.

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  • Temperature Forecast Bureau of Meteorology

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Rottnest Island Airport Temperature Statistics View More

September Temperature

Rottnest Island (3km)

  • Lowest 9 September, 2026

    11.5 °C
  • Average September

    16.1 °C
  • Highest 11 September, 2026

    23.3 °C

Climate (2021–2026)

Rottnest Island (3km)

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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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