Castle Bay Weather Forecast

    • 14
    • 26

    Partly cloudy

    • 13
    • 28

    Sunny

    • 14
    • 32

    Sunny

    • 18
    • 32

    Sunny

    • 18
    • 31

    Cloud clearing

    • 16
    • 29

    Sunny

    • 17
    • 23

    Partly cloudy

Today 22 Feb South West

Partly cloudy. Light winds becoming southeasterly 15 to 20 km/h in the morning. Daytime maximum temperatures 21 to 27.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
South to southeasterly 15 to 25 knots, reaching up to 30 knots offshore in the evening.
Seas
1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning, then increasing to 1.5 to 2 metres by early evening.
1st Swell
Southwesterly 1.5 to 2.5 metres inshore, increasing to 2 to 4 metres offshore.
Weather
Partly cloudy.
Weather Situation
A ridge is developing over southern WA during the weekend, pushing a weak trough over the South West Land Division into the Gascoyne. The trough will move to the west coast on Monday and deepen during next week.
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 12 February, 2026

    11.9 °C

  • Average February

    20.3 °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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