Cap Island Weather Forecast

    • 18
    • 18

    Shower

    • 17
    • 17

    Windy

    • 15
    • 17

    Cloudy

    • 16
    • 18

    Cloudy

    • 15
    • 18

    Partly cloudy

    • 17
    • 20

    Sunny

    • 19
    • 21

    Partly cloudy

Today 25 Mar West Coast

Partly cloudy. Medium chance of showers east of Ceduna, most likely from the late morning. Near zero chance of rain elsewhere. The chance of a thunderstorm in the late morning and afternoon, possibly severe, with damaging winds, possible hail and heavy rain which may lead to flash flooding east of Ceduna. Winds east to southeasterly 15 to 20 km/h tending south to southeasterly 15 to 25 km/h in the early morning then increasing to 25 to 40 km/h in the morning. Overnight temperatures falling to between 17 and 21 with daytime temperatures reaching 25 to 33.

Lower West Coastal Waters

Elliston to Cape Carnot
Wind
Southerly 15 to 20 knots.
Seas
Below 1 metre, increasing to 1 to 1.5 metres around midday.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the afternoon.
Weather
Partly cloudy. 50% chance of showers. The chance of a thunderstorm this afternoon.
Weather Situation
A broad trough lies over SA. A cold front clips the southeast as an upper trough moves up over SA today and tomorrow. A high pressure system develops south of the Bight late in the week and persists over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cap Island Temperature Statistics View More

March Temperature

Cummins Airport (64km)

  • Lowest 9 March, 2026

    7.5 °C

  • Average March

    19.2 °C

  • Highest 10 March, 2026

    35.2 °C

Climate (2021–Present)

Cummins Airport (64km)

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  • Average Low 2021–2026

    9.5 °C

  • Average 2021–2026

    15.6 °C

  • Average High 2021–2026

    22.9 °C
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