O'Sullivan Beach Weather Forecast

    • 15
    • 27

    Sunny

    • 19
    • 25

    Partly cloudy

    • 14
    • 27

    Sunny

    • 18
    • 26

    Mostly sunny

    • 18
    • 26

    Partly cloudy

    • 15
    • 23

    Partly cloudy

    • 14
    • 24

    Sunny

Today 21 Apr Adelaide

Sunny. Winds north to northeasterly 15 to 20 km/h tending north to northwesterly 15 to 25 km/h in the morning then turning northeasterly 15 to 20 km/h in the evening.

Adelaide Metropolitan Waters

Wind
North to northeasterly 10 to 15 knots.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Sunny.
Weather Situation
A strong high pressure system east of Tasmania will maintain a ridge over SA this week. A cold front is expected to weaken and slide across western and southern coasts on Wednesday. A second cold front may pass over the south again on Saturday with a high pressure system to follow over waters south of the Bight on Sunday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

O'Sullivan Beach Temperature Statistics View More

April Temperature

Noarlunga (5km)

  • Lowest 15 April, 2026

    10.7 °C

  • Average April

    17.2 °C

  • Highest 6 April, 2026

    27.6 °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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