Cap Island Weather Forecast

    • 17
    • 23

    Partly cloudy

    • 18
    • 19

    Partly cloudy

    • 17
    • 23

    Partly cloudy

    • 20
    • 23

    Partly cloudy

    • 20
    • 21

    Shower

    • 17
    • 18

    Partly cloudy

    • 16
    • 19

    Partly cloudy

Today 21 Apr West Coast

Mostly sunny. Slight chance of a shower west of Nullarbor in the evening. Near zero chance of rain elsewhere. Winds northerly 35 to 50 km/h. Daytime maximum temperatures in the low to mid 30s.

Lower West Coastal Waters

Elliston to Cape Carnot
Wind
Northerly 15 to 20 knots, reaching up to 25 knots offshore in the late morning and early afternoon. Winds tending northwest to southwesterly 10 to 15 knots in the late evening.
Seas
1 to 2 metres, decreasing to 1 metre later in the evening.
1st Swell
Southwesterly 2 metres.
Weather
Mostly sunny.
Weather Situation
A strong high pressure system east of Tasmania will maintain a ridge over SA this week. A cold front is expected to weaken and slide across western and southern coasts on Wednesday. A second cold front may pass over the south again on Saturday with a high pressure system to follow over waters south of the Bight on Sunday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cap Island Temperature Statistics View More

April Temperature

Cummins Airport (64km)

  • Lowest 14 April, 2026

    4.5 °C

  • Average April

    16.4 °C

  • Highest 18 April, 2026

    30.7 °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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