Marjorie Bay Weather Forecast

    • 14
    • 21

    Mostly sunny

    • 16
    • 20

    Morning showers. Wind easing

    • 15
    • 19

    Cloudy

    • 14
    • 20

    Mostly sunny

    • 15
    • 22

    Partly cloudy

    • 16
    • 22

    Sunny

    • 16
    • 20

    Shower or two

Today 11 Sep Lower West

Mostly sunny. Winds northeasterly 15 to 25 km/h turning northwesterly 15 to 20 km/h in the middle of the day. Overnight temperatures falling to between 9 and 12 with daytime temperatures reaching the low to mid 20s.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Northeasterly 10 to 15 knots turning northwesterly 15 to 20 knots in the middle of the day.
Seas
Around 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres during the morning.
Weather
Mostly sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marjorie Bay Temperature Statistics View More

September Temperature

Rottnest Island (3km)

  • Lowest 9 September, 2026

    11.5 °C

  • Average September

    15.5 °C

  • Highest 9 September, 2026

    20.5 °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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