Shag Rock Weather Forecast

    • 14
    • 24

    Storm

    • 14
    • 20

    Shower

    • 10
    • 19

    Partly cloudy

    • 7
    • 21

    Partly cloudy

    • 10
    • 21

    Partly cloudy

    • 9
    • 21

    Partly cloudy

    • 11
    • 18

    Cloudy

Today 30 Sep West Coast

Partly cloudy. Very high chance of showers. A thunderstorm likely, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding west of Ceduna. Winds north to northwesterly 15 to 20 km/h tending west to northwesterly in the middle of the day then becoming light in the evening. Daytime maximum temperatures in the mid to high 20s.

Upper West Coastal Waters

Fowlers Bay to Elliston
Wind
Variable about 10 knots.
Seas
Below 0.5 metres.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Partly cloudy. 80% chance of showers. The chance of a thunderstorm.
Weather Situation
A series of slow moving troughs will move across the state today and Thursday as a couple of cold fronts move across waters to the south. A high pressure system will become established south of the Bight during Friday and persist there on Saturday. A trough will extend from WA over the far west of SA over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Shag Rock Temperature Statistics View More

September Temperature

Streaky Bay (44km)

  • Lowest 17 September, 2026

    3.3 °C

  • Average September

    16.7 °C

  • Highest 28 September, 2026

    34.8 °C

Climate (2021–2026)

Streaky Bay (44km)

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  • Average Low 2021–2026

    11.8 °C

  • Average 2021–2026

    16.5 °C

  • Average High 2021–2026

    23.6 °C
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