Porpoise Bay Weather Forecast

    • 19
    • 24

    Showers. Possible storm

    • 18
    • 23

    Sunny

    • 19
    • 23

    Possible shower

    • 17
    • 21

    Showers easing

    • 15
    • 21

    Partly cloudy

    • 17
    • 23

    Showers increasing

    • 16
    • 21

    Shower or two

Today 15 Apr Lower West

Partly cloudy. High chance of showers, becoming less likely in the early afternoon. The chance of a thunderstorm in the morning and afternoon. Light winds becoming south to southwesterly 15 to 25 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
Southerly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Partly cloudy. 70% chance of showers. The chance of a thunderstorm in the morning and afternoon.
Weather Situation
A west coast trough lies slow moving nearby, while a ridge to the east weakens over the next days. The trough will move inland ahead of the next cold front on Friday night.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Porpoise Bay Temperature Statistics View More

April Temperature

Rottnest Island (3km)

  • Lowest 10 April, 2026

    15 °C

  • Average April

    19.5 °C

  • Highest 3 April, 2026

    25.9 °C

Climate (2021–Present)

Rottnest Island (3km)

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  • Average Low 2021–2026

    16 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    22.8 °C
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