Castle Bay Weather Forecast

    • 13
    • 22

    Partly cloudy

    • 12
    • 23

    Mostly sunny

    • 12
    • 23

    Possible shower

    • 14
    • 23

    Partly cloudy

    • 11
    • 23

    Partly cloudy

    • 11
    • 26

    Mostly sunny

    • 14
    • 26

    Sunny

Today 6 Apr South West

Cloudy. Light winds becoming east to southeasterly 15 to 20 km/h in the morning then becoming light in the middle of the day. Daytime maximum temperatures between 18 and 21.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
Southeasterly 15 to 20 knots.
Seas
1 to 2 metres, decreasing below 1 metre around midday.
1st Swell
Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore.
Weather
Cloudy.
Weather Situation
An inland trough is moving east, extending over the south east coast. A high pressure ridge will strengthen along the south coast on Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Castle Bay Temperature Statistics View More

April Temperature

Cape Naturaliste (8km)

  • Lowest 2 April, 2026

    13.3 °C

  • Average April

    18.3 °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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