Castle Bay Weather Forecast

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    • 22

    Partly cloudy

    • 14
    • 22

    Partly cloudy

    • 12
    • 23

    Partly cloudy

    • 13
    • 21

    Shower or two

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    Shower or two

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    Shower or two

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    • 21

    Showers

Today 24 Apr South West

Mostly clear. Slight chance of a shower near the south coast, near zero chance elsewhere. Light winds.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
West to southwesterly below 10 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Partly cloudy.
Weather Situation
A trough is moving eastward over the south coast with the northern end of a cold front to brush the southwest coast later on tonight A high pressure ridge will then become established through southern WA during the weekend, moving into the Bight on Sunday night as a trough deepens down the west coast.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Castle Bay Temperature Statistics View More

April Temperature

Cape Naturaliste (8km)

  • Lowest 21 April, 2026

    10.4 °C

  • Average April

    17.2 °C

  • Highest 3 April, 2026

    26.8 °C

Climate (2021–Present)

Cape Naturaliste (8km)

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  • Average Low 2021–2026

    13.3 °C

  • Average 2021–2026

    17.2 °C

  • Average High 2021–2026

    22.7 °C
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