Castle Bay Weather Forecast

    • 13
    • 25

    Clear

    • 14
    • 24

    Showers. Possible late storm

    • 14
    • 21

    Cloudy

    • 12
    • 21

    Cloudy

    • 14
    • 22

    Showers increasing

    • 11
    • 19

    Shower or two

    • 11
    • 20

    Shower or two

Today 16 Apr South West

Sunny. Light winds becoming southeast to southwesterly 15 to 20 km/h in the late afternoon then tending northeast to southeasterly in the evening.

Bunbury Geographe Coastal Waters

Dawesville to Cape Naturaliste
Wind
Variable about 10 knots becoming southerly 10 to 15 knots in the late afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 2 metres inshore, increasing to 2 to 3 metres offshore.
Weather
Sunny.
Weather Situation
A ridge sits over the south coast, as a trough moves east through central parts of the State ahead of a cold front Friday night. The cold front will weaken on Saturday as it moves east across the South West Land Division. A ridge will develop momentarily over southern parts ahead of the next cold front Monday night.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Castle Bay Temperature Statistics View More

April Temperature

Cape Naturaliste (8km)

  • Lowest 7 April, 2026

    11 °C

  • Average April

    17.4 °C

  • Highest 3 April, 2026

    26.8 °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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