Mary Cove Weather Forecast

    • 15
    • 20

    Shower or two. Wind easing

    • 15
    • 19

    Cloudy

    • 14
    • 20

    Mostly sunny

    • 14
    • 23

    Mostly sunny

    • 17
    • 23

    Sunny

    • 17
    • 22

    Sunny

    • 15
    • 20

    Showers

Today 12 Sep Lower West

High chance of showers in the morning. Mostly sunny afternoon. Winds northwesterly 20 to 30 km/h tending westerly in the early morning then becoming light in the evening. Overnight temperatures falling to around 14 with daytime temperatures reaching between 18 and 21.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
West to northwesterly 15 to 25 knots shifting west to southwesterly in the early morning then becoming west to northwesterly below 10 knots in the late afternoon. Winds may reach up to 30 knots immediately behind the wind change early in the morning.
Seas
1 to 2 metres, decreasing below 1 metre around midday.
1st Swell
West to southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres during the morning.
Weather
Partly cloudy. 80% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mary Cove Temperature Statistics View More

September Temperature

Rottnest Island (1km)

  • Lowest 9 September, 2026

    11.5 °C

  • Average September

    15.7 °C

  • Highest 10 September, 2026

    20.9 °C

Climate (2021–2026)

Rottnest Island (1km)

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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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