Porpoise Bay Weather Forecast

    • 17
    • 23

    Partly cloudy

    • 16
    • 22

    Sunny

    • 16
    • 22

    Becoming windy. Partly cloudy

    • 16
    • 23

    Wind easing. Sunny

    • 17
    • 23

    Sunny

    • 18
    • 23

    Becoming windy. Sunny

    • 18
    • 24

    Becoming windy. Sunny

Today 3 Dec Lower West

Mostly sunny. Winds south to southwesterly 20 to 30 km/h becoming light in the late evening. Overnight temperatures falling to between 12 and 16 with daytime temperatures reaching the mid to high 20s.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 15 to 20 knots.
Seas
1.5 metres, decreasing to 1 metre during the morning.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning, then tending southwesterly 1 to 1.5 metres around midday.
Weather
Partly cloudy.
Weather Situation
A new high pressure ridge will develop south of the Local Waters area on Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Porpoise Bay Temperature Statistics View More

December Temperature

Rottnest Island (3km)

  • Lowest 2 December, 2025

    19.4 °C

  • Average December

    23.2 °C

  • Highest 1 December, 2025

    36.2 °C

Climate (2020–Present)

Rottnest Island (3km)

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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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