O'Sullivan Beach Weather Forecast

    • 15
    • 21

    Showers

    • 12
    • 17

    Shower or two

    • 10
    • 17

    Cloudy

    • 8
    • 16

    Partly cloudy

    • 6
    • 17

    Sunny

    • 11
    • 20

    Sunny

    • 14
    • 24

    Sunny

Today 13 Sep Adelaide

Partly cloudy. Very high chance of showers, most likely this morning. The chance of a thunderstorm this morning. Winds north to northeasterly 15 to 25 km/h increasing to 35 km/h before shifting westerly 20 to 30 km/h in the middle of the day.

Adelaide Metropolitan Waters

Wind
Northerly 15 to 20 knots turning westerly in the middle of the day.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing to 1 metre by early evening.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Partly cloudy. 95% chance of showers. The chance of a thunderstorm this morning.
Weather Situation
A trough will move across SA today ahead of a high pressure ridge that will build in the wake. A cold front will then slip across southern coasts late Monday and early Tuesday, before the high moves across waters to the south to be centred over Victoria by Thursday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

O'Sullivan Beach Temperature Statistics View More

September Temperature

Noarlunga (5km)

  • Lowest 8 September, 2026

    6.7 °C

  • Average September

    13.7 °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

    16.7 °C

  • Average High 2021–2026

    21.9 °C
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