Castle Bay Weather Forecast

    • 16
    • 27

    Partly cloudy

    • 16
    • 25

    Partly cloudy

    • 12
    • 26

    Mostly sunny

    • 13
    • 29

    Sunny

    • 16
    • 30

    Sunny

    • 15
    • 28

    Mostly sunny

    • 14
    • 27

    Mostly sunny

Today 15 Feb South West

Partly cloudy. Medium chance of showers in the south, slight chance elsewhere. The chance of a thunderstorm in the early morning. Light winds becoming west to southwesterly 15 to 25 km/h in the early morning then tending south to southwesterly 20 to 30 km/h in the middle of the day. Daytime maximum temperatures 23 to 28.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
Southwesterly 15 to 20 knots turning southerly during the day. Winds reaching up to 25 knots inshore in the evening.
Seas
1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore during the morning.
Weather
Partly cloudy.
Weather Situation
A trough will move to the Goldfields and inland Gascoyne today, reaching the Interior and Eucla on Monday. A new ridge arrives about the southwest coast later today and builds across southern WA early 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

    20.6 °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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