Little Armstrong Bay Weather Forecast

    • 10
    • 17

    Sunny

    • 11
    • 17

    Sunny

    • 12
    • 18

    Sunny

    • 12
    • 19

    Sunny

    • 14
    • 19

    Shower or two

    • 13
    • 17

    Shower or two

    • 13
    • 17

    Shower or two

Today 30 Aug Lower West

Sunny. Patchy fog in the south in the early morning. The chance of frost in the south in the early morning. Light winds. Daytime maximum temperatures around 19.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
East to northeasterly 10 to 15 knots becoming variable about 10 knots in the morning.
Seas
Below 1 metre.
1st Swell
Southwesterly below 1 metre.
Weather
Sunny.
Weather Situation
A strong ridge will slowly move across southern WA over the next few days. A weak cold front will brush the southwest corner of the State on Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Little Armstrong Bay Temperature Statistics View More

August Temperature

Rottnest Island (1km)

  • Lowest 26 August, 2025

    7.6 °C

  • Average August

    15 °C

  • Highest 13 August, 2025

    22.4 °C

Climate (2020–Present)

Rottnest Island (1km)

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  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    22.8 °C
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