Shag Rock Weather Forecast

    • 8
    • 21

    Shower

    • 10
    • 18

    Partly cloudy

    • 7
    • 19

    Partly cloudy

    • 7
    • 18

    Partly cloudy

    • 6
    • 18

    Cloudy

    • 7
    • 19

    Cloudy

    • 9
    • 19

    Shower

Today 18 Aug West Coast

Partly cloudy. High chance of showers east of Ceduna, slight chance elsewhere. Winds north to northeasterly 20 to 30 km/h tending northwest to southwesterly 15 to 25 km/h in the evening then becoming light in the late evening. Daytime maximum temperatures between 19 and 24.

Upper West Coastal Waters

Fowlers Bay to Elliston
Wind
North to northeasterly 15 to 20 knots shifting westerly in the early afternoon.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning.
1st Swell
Southwesterly 2 metres.
Weather
Partly cloudy. 60% chance of showers.
Weather Situation
A large blocking high pressure system persists over the Tasman Sea. An upper level disturbance responsible for precipitation over central and eastern parts will weaken today as a weakening cold front moves across western parts today and across the southeast on Wednesday. A high pressure ridge is expected to develop over South Australia from Wednesday afternoon with weak troughs clipping the southeast in a broad westerly flow on Thursday and Friday.
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  • 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

    11.5 °C

  • Highest 8 August, 2026

    19.1 °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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