Castle Bay Weather Forecast

    • 11
    • 21

    Clear

    • 10
    • 22

    Mostly sunny

    • 11
    • 22

    Sunny

    • 11
    • 22

    Sunny

    • 12
    • 22

    Sunny

    • 12
    • 21

    Sunny

    • 12
    • 22

    Sunny

Today 4 May South West

Partly cloudy. Light winds.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
Southeasterly about 10 knots increasing to 10 to 15 knots in the late evening.
Seas
Below 0.5 metres.
1st Swell
Southwesterly around 1 metre inshore, increasing to 1 to 2 metres offshore.
Weather
Clear.
Weather Situation
A ridge extends over the west and southwest coasts. The ridge will move into the Bight on Tuesday and remain the dominant weather feature throughout the week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Castle Bay Temperature Statistics View More

May Temperature

Cape Naturaliste (8km)

  • Lowest 2 May, 2026

    9.5 °C

  • Average May

    13.4 °C

  • Highest 3 May, 2026

    19.6 °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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