O'Sullivan Beach Weather Forecast

    • 24
    • 43

    Becoming windy. Mostly sunny

    • 17
    • 33

    Mostly sunny

    • 20
    • 41

    Sunny

    • 28
    • 37

    Sunny

    • 20
    • 30

    Mostly sunny

    • 18
    • 33

    Mostly sunny

    • 20
    • 33

    Sunny

Today 24 Jan Adelaide

Mostly sunny. Winds northwest to northeasterly 30 to 45 km/h tending west to northwesterly 25 to 40 km/h in the early afternoon then shifting south to southeasterly 20 to 30 km/h in the evening.

Adelaide Metropolitan Waters

Wind
North to northeasterly 15 to 20 knots turning west to northwesterly in the late morning then tending southeast to southwesterly in the late afternoon.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
A trough is forecast to move over southern SA today, and linger through inland parts of SA into Sunday. Another 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 into the west on Monday and across the south on Tuesday.
Graph Plots Open in Graphs

  • 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

    21.8 °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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