O'Sullivan Beach Weather Forecast

    • 29
    • 39

    Sunny

    • 19
    • 30

    Becoming windy. Mostly sunny

    • 19
    • 35

    Partly cloudy

    • 22
    • 37

    Mostly sunny

    • 21
    • 30

    Partly cloudy

    • 15
    • 23

    Partly cloudy

    • 13
    • 24

    Mostly sunny

Today 27 Jan Adelaide

Sunny. Winds east to northeasterly 20 to 30 km/h tending northwest to southwesterly 25 to 35 km/h in the morning then tending southeast to southwesterly in the late afternoon.

Adelaide Metropolitan Waters

Wind
North to northeasterly 10 to 15 knots shifting south to southwesterly 15 to 20 knots in the middle of the day. Winds reaching up to 25 knots north of Grange in the evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
1st Swell
West to southwesterly below 1 metre.
Weather
Sunny.
Weather Situation
A trough over central waters moves east and contracts into the Bight later today. A high pressure system moves into waters south of the Bight on Wednesday, tracking eastwards to reach the Tasman Sea on Thursday, maintaining a ridge over southern SA into Friday as another high pressure ridge extends in from the west.
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

    22.7 °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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