Rocky Bay Weather Forecast

    • 11
    • 18

    Sunny

    • 12
    • 20

    Possible shower developing

    • 15
    • 19

    Mostly sunny

    • 15
    • 20

    Showers. Windy

    • 14
    • 18

    Showers. Windy

    • 12
    • 17

    Shower or two

    • 12
    • 17

    Possible shower

Today 16 Aug Lower West

Sunny. Patches of frost and the chance of fog inland in the morning. Light winds becoming easterly 15 to 25 km/h in the morning. Overnight temperatures falling to between 2 and 5 with daytime temperatures reaching between 17 and 20.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Easterly 10 to 15 knots becoming variable about 10 knots in the late afternoon then becoming easterly 10 to 15 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Rocky Bay Temperature Statistics View More

August Temperature

Rottnest Island (2km)

  • Lowest 4 August, 2025

    9.2 °C

  • Average August

    15.6 °C

  • Highest 13 August, 2025

    22.4 °C

Climate (2020–Present)

Rottnest Island (2km)

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  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    22.8 °C
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