Castle Bay Weather Forecast

    • 12
    • 22

    Sunny

    • 14
    • 23

    Sunny

    • 16
    • 24

    Partly cloudy

    • 16
    • 23

    Showers

    • 12
    • 19

    Shower or two

    • 11
    • 19

    Shower or two

    • 10
    • 19

    Possible shower

Today 10 May South West

The chance of smoke haze in the morning. Sunny afternoon. Winds northeasterly 15 to 20 km/h tending northerly 15 to 25 km/h in the morning then becoming light in the late afternoon. Overnight temperatures falling to between 7 and 10 with daytime temperatures reaching the low 20s.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
North to northeasterly 15 to 20 knots.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the morning.
1st Swell
Southwesterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Weather
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

    14.9 °C

  • Highest 7 May, 2026

    21.4 °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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