O'Sullivan Beach Weather Forecast

    • 13
    • 29

    Mostly sunny

    • 21
    • 31

    Partly cloudy

    • 13
    • 24

    Sunny

    • 14
    • 22

    Partly cloudy

    • 11
    • 20

    Mostly sunny

    • 12
    • 24

    Sunny

    • 14
    • 27

    Mostly sunny

Today 3 Dec Adelaide

Mostly sunny. Winds north to northeasterly 15 to 20 km/h tending north to northwesterly 20 to 30 km/h in the morning then tending north to northeasterly 15 to 20 km/h in the evening.

Adelaide Metropolitan Waters

Wind
North to northeasterly 10 to 15 knots tending north to northwesterly in the morning then becoming north to northeasterly about 10 knots in the late afternoon.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
A high pressure system will continue to slowly move eastwards to be centred over the Tasman Sea by Wednesday evening. A low pressure trough will then move into the west of SA late Wednesday and extend northeastwards during Thursday, followed by another ridge of high pressure. A weak cold front clips the far southeast Saturday morning.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

O'Sullivan Beach Temperature Statistics View More

December Temperature

Noarlunga (5km)

  • Lowest 2 December, 2025

    11.1 °C

  • Average December

    14.6 °C

  • Highest 1 December, 2025

    18.9 °C

Climate (2020–Present)

Noarlunga (5km)

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  • Average Low 2020–2025

    12.7 °C

  • Average 2020–2025

    16.6 °C

  • Average High 2020–2025

    21.7 °C
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