Cap Island Weather Forecast

    • 17
    • 18

    Partly cloudy

    • 18
    • 20

    Shower

    • 18
    • 19

    Shower

    • 17
    • 19

    Partly cloudy

    • 17
    • 19

    Windy

    • 18
    • 20

    Cloudy

    • 18
    • 21

    Partly cloudy

Today 20 Feb West Coast

Partly cloudy. The chance of fog south of Streaky Bay early this morning. Medium chance of showers west of Ceduna, near zero chance elsewhere. Winds south to southeasterly 15 to 20 km/h tending south to southwesterly 25 to 35 km/h in the middle of the day then tending south to southeasterly 20 to 30 km/h in the evening. Daytime maximum temperatures 26 to 34.

Lower West Coastal Waters

Elliston to Cape Carnot
Wind
South to southeasterly about 10 knots increasing to 15 to 20 knots in the early afternoon.
Seas
Around 1 metre, increasing to 1 to 1.5 metres inshore by early evening.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure across the south of SA will weaken during Saturday as the high pressure centre moves into the Tasman Sea. A broad trough of low pressure lies over the north and will move south today and Saturday. The trough will move eastwards during Sunday as a cold front moves across the south. A broad area of low pressure will persist across the north early next week as a new high pressure ridge becomes established over waters to the south.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cap Island Temperature Statistics View More

February Temperature

Cummins Airport (64km)

  • Lowest 4 February, 2026

    6.5 °C

  • Average February

    21.2 °C

  • Highest 10 February, 2026

    39.7 °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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