Castle Bay Weather Forecast

    • 10
    • 22

    Sunny

    • 11
    • 22

    Sunny

    • 12
    • 23

    Sunny

    • 12
    • 21

    Sunny

    • 11
    • 22

    Sunny

    • 13
    • 23

    Sunny

    • 14
    • 23

    Shower or two

Today 6 May South West

Partly cloudy. The chance of morning fog in the east. Winds southeasterly 15 to 20 km/h turning easterly early in the morning. Overnight temperatures falling to between 6 and 9 with daytime temperatures reaching between 18 and 21.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
Southeasterly 15 to 20 knots turning easterly before dawn.
Seas
1 to 1.5 metres, decreasing to 1 metre around midday.
1st Swell
Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Weather
Mostly sunny.
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 5 May, 2026

    9.3 °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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