Castle Bay Weather Forecast

    • 14
    • 24

    Possible shower

    • 15
    • 21

    Cloudy

    • 14
    • 22

    Cloudy

    • 15
    • 22

    Showers increasing. Windy

    • 12
    • 19

    Showers easing. Wind easing

    • 12
    • 20

    Showers increasing

    • 14
    • 20

    Showers easing

Today 17 Apr South West

Cloudy. High chance of showers in the east, medium chance elsewhere. The chance of a thunderstorm in the east. Winds northwesterly 20 to 30 km/h turning westerly in the late evening.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
West to northwesterly 20 to 25 knots, reaching up to 30 knots offshore in the evening. Winds turning southwesterly in the late evening.
Seas
2 to 2.5 metres.
1st Swell
Southwesterly around 1 metre inshore, increasing to 1.5 metres offshore.
Weather
Cloudy. 50% chance of showers.
Weather Situation
A cold front approaches the southwest, moving over the coast during Friday night. The cold front will weaken on Saturday as it moves east across the South West Land Division. A ridge will develop over southern parts ahead of the next cold front Monday night.
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 7 April, 2026

    11 °C

  • Average April

    17.3 °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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