Cap Island Weather Forecast

    • 14
    • 15

    Shower

    • 14
    • 15

    Cloudy

    • 14
    • 15

    Partly cloudy

    • 11
    • 16

    Cloudy

    • 14
    • 15

    Shower

    • 14
    • 15

    Shower

    • 12
    • 15

    Cloudy

Today 20 Aug West Coast

Mostly sunny. Slight chance of a shower south of Streaky Bay during this afternoon and evening. Near zero chance of rain elsewhere. Light winds becoming northwest to southwesterly 15 to 25 km/h in the middle of the day then tending southeast to southwesterly 15 to 20 km/h in the late afternoon. Daytime maximum temperatures between 19 and 22.

Lower West Coastal Waters

Elliston to Cape Carnot
Wind
Northwesterly 15 to 20 knots turning southwesterly in the late morning.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre by early evening.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Partly cloudy. 50% chance of showers.
Weather Situation
A cold front clears to the east Wednesday evening. Weak troughs clip the southeast in a broad westerly flow on Thursday and Friday, as a ridge of high pressure is expected to approach South Australia from the west. The high centre is expected to linger over the state on the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cap Island Temperature Statistics View More

August Temperature

Cummins Airport (64km)

  • Lowest 2 August, 2026

    2.7 °C

  • Average August

    11.2 °C

  • Highest 8 August, 2026

    19.8 °C

Climate (2021–2026)

Cummins Airport (64km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    9.6 °C

  • Average 2021–2026

    15.7 °C

  • Average High 2021–2026

    22.9 °C
Get WillyWeather+ to remove ads