Twin Rocks Weather Forecast

    • 13
    • 22

    Mostly sunny

    • 11
    • 19

    Partly cloudy

    • 7
    • 26

    Sunny

    • 13
    • 29

    Partly cloudy

    • 16
    • 28

    Partly cloudy

    • 13
    • 27

    Partly cloudy

    • 14
    • 28

    Shower or two

Today 20 Sep West Coast

Mostly sunny. Slight chance of a shower south of Streaky Bay, near zero chance elsewhere. Winds north to northwesterly 25 to 35 km/h shifting south to southwesterly early in the morning then decreasing to 15 to 20 km/h in the late evening. Daytime maximum temperatures in the low to mid 20s.

Far West Coastal Waters

WA-SA Border to Fowlers Bay
Wind
South to southwesterly 15 to 25 knots becoming southwesterly 15 to 20 knots in the early morning then tending southerly 10 to 15 knots in the evening.
Seas
1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the afternoon.
Weather
Partly cloudy.
Weather Situation
A cold front will cross the west of the state this morning and will track across the east of the state during the day. Another high pressure system will move eastwards across waters to the south during Monday then over Victoria and the Tasman Sea on Tuesday. This high will extend a ridge westwards over SA ahead of a low pressure trough that is expected to move over the far west of SA during Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Twin Rocks Temperature Statistics View More

September Temperature

Nullarbor (22km)

  • Lowest 6 September, 2026

    2.2 °C

  • Average September

    15.3 °C

  • Highest 12 September, 2026

    30.7 °C

Climate (2021–2026)

Nullarbor (22km)

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  • Average Low 2021–2026

    11.3 °C

  • Average 2021–2026

    16.8 °C

  • Average High 2021–2026

    23.8 °C
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