Shag Rock Weather Forecast

    • 7
    • 21

    Shower

    • 12
    • 16

    Rain

    • 11
    • 16

    Shower

    • 6
    • 18

    Partly cloudy

    • 8
    • 22

    Sunny

    • 11
    • 21

    Partly cloudy

    • 9
    • 20

    Partly cloudy

Today 23 Aug West Coast

Partly cloudy. Very high chance of rain west of Ceduna, medium chance elsewhere. The chance of a thunderstorm west of Ceduna in the late afternoon and evening. Thunderstorms possibly severe with damaging winds and heavy rain which may lead to flash flooding west of Nullarbor in the late afternoon and evening. Winds north to northeasterly 20 to 30 km/h. Daytime maximum temperatures around 20.

Upper West Coastal Waters

Fowlers Bay to Elliston
Wind
Northeasterly 10 to 15 knots.
Seas
Around 1 metre.
1st Swell
Southwesterly 2 to 3 metres.
Weather
Partly cloudy. 60% chance of showers in the evening. The chance of a thunderstorm at night.
Weather Situation
A high pressure system centred over the eastern states continue to drift slowly east as a low pressure system and associated trough move into the far western SA later today and then moves across the state on Monday and out over the eastern states by later Tuesday. Another high moves into the west later Tuesday and over SA on Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Shag Rock Temperature Statistics View More

August Temperature

Streaky Bay (44km)

  • Lowest 10 August, 2026

    1.5 °C

  • Average August

    11.8 °C

  • Highest 18 August, 2026

    21.5 °C

Climate (2021–2026)

Streaky Bay (44km)

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  • Average Low 2021–2026

    11.8 °C

  • Average 2021–2026

    16.4 °C

  • Average High 2021–2026

    23.6 °C
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