Castle Bay Weather Forecast

    • 11
    • 17

    Cloudy

    • 10
    • 20

    Cloudy

    • 11
    • 21

    Partly cloudy

    • 11
    • 21

    Partly cloudy

    • 10
    • 21

    Sunny

    • 11
    • 22

    Mostly sunny

    • 11
    • 22

    Sunny

Today 1 May South West

Cloudy. Winds southerly 15 to 20 km/h.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
Southerly 10 to 15 knots, reaching up to 20 knots offshore in the evening. Winds tending southeasterly in the late evening.
Seas
Around 1 metre, increasing to 1.5 metres offshore.
1st Swell
Southwesterly 1.5 to 2.5 metres inshore, increasing to 2.5 to 4 metres offshore.
Weather
Cloudy.
Weather Situation
A low-pressure system in the Bight continues to move east, as a ridge is forming in behind. The ridge will settle over the southwest before extending over much of the south coast during the weekend and into the new week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Castle Bay Temperature Statistics View More

May Temperature

Cape Naturaliste (8km)

  • Lowest 1 May, 2026

    10.6 °C

  • Average May

    12.6 °C

  • Highest

    –

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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