O'Sullivan Beach Weather Forecast

    • 15
    • 33

    Sunny

    • 24
    • 40

    Becoming windy. Mostly sunny

    • 18
    • 34

    Mostly sunny

    • 20
    • 41

    Sunny

    • 27
    • 37

    Sunny

    • 19
    • 29

    Mostly sunny

    • 19
    • 33

    Sunny

Today 23 Jan Adelaide

Sunny. Winds east to northeasterly 20 to 30 km/h tending south to southwesterly 15 to 20 km/h in the late afternoon then tending easterly 15 to 25 km/h in the evening.

Adelaide Metropolitan Waters

Wind
East to northeasterly 10 to 15 knots becoming variable below 10 knots in the middle of the day then becoming easterly 10 to 15 knots in the late evening.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Sunny.
Weather Situation
A trough of low pressure approaches from the west late today and is forecast to move over southern SA during Saturday, then lingers through inland SA into Sunday. A high pressure system is expected to move over waters to the south over the weekend, extending a ridge over southern SA on Sunday, before a second trough moves in from the west on Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

O'Sullivan Beach Temperature Statistics View More

January Temperature

Noarlunga (5km)

  • Lowest 1 January, 2026

    11.2 °C

  • Average January

    21.7 °C

  • Highest 7 January, 2026

    43.3 °C

Climate (2021–Present)

Noarlunga (5km)

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  • Average Low 2021–2026

    12.7 °C

  • Average 2021–2026

    16.7 °C

  • Average High 2021–2026

    21.8 °C
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