Little Armstrong Bay Weather Forecast

    • 17
    • 23

    Mostly sunny

    • 16
    • 22

    Sunny

    • 16
    • 22

    Becoming windy. Partly cloudy

    • 16
    • 23

    Windy. Sunny

    • 17
    • 23

    Sunny

    • 18
    • 24

    Becoming windy. Sunny

    • 17
    • 25

    Becoming windy. Sunny

Today 3 Dec Lower West

Mostly sunny. Winds southerly 15 to 20 km/h tending southwesterly 20 to 30 km/h in the morning then becoming light in the late evening. Daytime maximum temperatures in the mid to high 20s.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southwesterly 10 to 15 knots turning southerly in the afternoon.
Seas
Around 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the afternoon, then increasing to 1 to 1.5 metres by early evening.
Weather
Sunny.
Weather Situation
A high pressure system in the Indian Ocean brings a south to southeasterly flow to the Local Waters. The high pressure system will move eastwards through the Bight over the weekend, a south to southeasterly flow remaining about the Local Waters throughout.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Little Armstrong Bay Temperature Statistics View More

December Temperature

Rottnest Island (1km)

  • Lowest 2 December, 2025

    19.4 °C

  • Average December

    23.2 °C

  • Highest 1 December, 2025

    36.2 °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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