Porpoise Bay Weather Forecast

    • 24
    • 36

    Mostly sunny

    • 19
    • 25

    Windy. Partly cloudy

    • 16
    • 23

    Windy. Partly cloudy

    • 16
    • 24

    Windy. Sunny

    • 17
    • 27

    Windy. Sunny

    • 17
    • 26

    Wind easing. Sunny

    • 19
    • 26

    Sunny

Today 25 Dec Lower West

Partly cloudy. The chance of a thunderstorm with little or no rainfall during this afternoon and early evening. Winds east to northeasterly 25 to 40 km/h turning north to northwesterly 15 to 25 km/h in the early afternoon. Daytime maximum temperatures around 40.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
East to northeasterly 15 to 20 knots shifting west to northwesterly below 10 knots in the middle of the day then tending north to northwesterly 10 to 15 knots in the late evening.
Seas
Around 1 metre.
1st Swell
Southwesterly around 1 metre.
Weather
Mostly sunny.
Weather Situation
A ridge over local waters will move inland today. A trough deepening offshore moves close to the west coast today before moving inland on this evening, ahead of a weak cold front brushing the south coast on Friday. A new ridge will develop along the southwest coast later on Friday and expand east along the south coast on the weekend.
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 21 December, 2025

    14.6 °C

  • Average December

    21.4 °C

  • Highest 14 December, 2025

    37.1 °C

Climate (2020–Present)

Rottnest Island (3km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    22.8 °C
Get WillyWeather+ to remove ads