Catherine Bay Weather Forecast

    • 21
    • 25

    Mostly sunny

    • 21
    • 25

    Becoming windy. Mostly sunny

    • 20
    • 28

    Windy. Sunny

    • 19
    • 27

    Windy. Sunny

    • 19
    • 26

    Becoming windy. Mostly sunny

    • 19
    • 28

    Wind easing. Sunny

    • 21
    • 28

    Mostly sunny

Today 20 Mar Lower West

Mostly sunny. Winds northeast to southeasterly 15 to 20 km/h tending northwest to northeasterly 15 to 25 km/h in the morning then tending southeast to southwesterly 15 to 20 km/h in the late afternoon. Daytime maximum temperatures 33 to 39.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
South to southwesterly about 10 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre by early evening.
Weather
Mostly sunny.
Weather Situation
A west coast trough will move inland later Saturday, ahead of a weak cold front brushing past the south coast on Sunday. A new ridge will arrive on the southwest coast on Sunday, building east along the south coast on Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Catherine Bay Temperature Statistics View More

March Temperature

Rottnest Island (1km)

  • Lowest 11 March, 2026

    15.1 °C

  • Average March

    22.2 °C

  • Highest 18 March, 2026

    36.3 °C

Climate (2021–Present)

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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