Marjorie Bay Weather Forecast

    • 15
    • 19

    Showers. Wind easing

    • 14
    • 19

    Showers

    • 12
    • 19

    Early shower or two. Windy

    • 10
    • 19

    Mostly sunny

    • 11
    • 20

    Sunny

    • 11
    • 20

    Sunny

    • 14
    • 21

    Mostly sunny

Today 4 Sep Lower West

Partly cloudy. High chance of showers, most likely in the morning. Winds westerly 20 to 30 km/h tending southwesterly in the morning then becoming light in the evening. Overnight temperatures falling to between 10 and 13 with daytime temperatures reaching between 17 and 20.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
West to southwesterly 15 to 25 knots, reaching up to 30 knots early in the morning. Winds decreasing to about 10 knots in the early afternoon.
Seas
1.5 to 2.5 metres, decreasing below 1 metre during the afternoon.
1st Swell
West to southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres during the morning.
Weather
Partly cloudy. 80% chance of showers.
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 1 September, 2026

    12.5 °C

  • Average September

    14.8 °C

  • Highest 2 September, 2026

    18.3 °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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