Castle Bay Weather Forecast

    • 17
    • 32

    Sunny

    • 18
    • 29

    Partly cloudy

    • 16
    • 31

    Mostly sunny

    • 17
    • 24

    Partly cloudy

    • 13
    • 23

    Partly cloudy

    • 12
    • 27

    Sunny

    • 14
    • 28

    Sunny

Today 25 Feb South West

Mostly sunny. The chance of a thunderstorm in the east during this afternoon and early evening. Winds east to southeasterly 15 to 25 km/h shifting north to northwesterly in the late morning then tending southeast to southwesterly 15 to 20 km/h in the late afternoon. Daytime maximum temperatures 32 to 37.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
Southeasterly 15 to 20 knots turning south to southwesterly in the late morning.
Seas
1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres by early evening.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Sunny.
Weather Situation
A ridge lies to the south of the state with a trough forming down the west coast. The trough is deepening as a high pressure system moves into the Bight.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Castle Bay Temperature Statistics View More

February Temperature

Cape Naturaliste (8km)

  • Lowest 22 February, 2026

    11.8 °C

  • Average February

    19.9 °C

  • Highest 2 February, 2026

    34.8 °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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