O'Sullivan Beach Weather Forecast

    • 10
    • 17

    Partly cloudy

    • 9
    • 17

    Partly cloudy

    • 7
    • 17

    Partly cloudy

    • 10
    • 16

    Partly cloudy

    • 8
    • 19

    Sunny

    • 9
    • 19

    Mostly sunny

    • 12
    • 23

    Mostly sunny

Today 6 Sep Adelaide

Partly cloudy. Slight chance of a shower. Winds southwesterly 15 to 20 km/h becoming light in the early morning.

Adelaide Metropolitan Waters

Wind
Southwesterly 10 to 15 knots becoming variable about 10 knots in the morning.
Seas
Below 1 metre.
1st Swell
West to southwesterly around 1 metre.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure lies across the state. A cold front will move across southern coasts early Monday but the ridge will persist further north. A trough over the interior of WA will be near stationary early to mid next week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

O'Sullivan Beach Temperature Statistics View More

September Temperature

Noarlunga (5km)

  • Lowest 4 September, 2026

    10.9 °C

  • Average September

    14.8 °C

  • Highest 1 September, 2026

    20.6 °C

Climate (2021–2026)

Noarlunga (5km)

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  • Average Low 2021–2026

    12.8 °C

  • Average 2021–2026

    16.8 °C

  • Average High 2021–2026

    21.9 °C
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