O'Sullivan Beach Weather Forecast

    • 15
    • 27

    Mostly clear

    • 19
    • 27

    Partly cloudy

    • 19
    • 28

    Partly cloudy

    • 18
    • 26

    Showers

    • 11
    • 17

    Showers

    • 11
    • 18

    Showers

    • 11
    • 19

    Shower or two

Today 29 Apr Adelaide

Mostly clear. Winds north to northeasterly 15 to 20 km/h becoming light in the late afternoon.

Adelaide Metropolitan Waters

Wind
West to northwesterly below 10 knots becoming east to northeasterly in the late afternoon.
Seas
Below 0.5 metres.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Mostly clear.
Weather Situation
A strong high pressure system over the Tasman Sea will maintain a ridge across South Australia through to Friday. Northerly winds freshen on Friday ahead of a front that is forecast to move across the far west Friday afternoon, then continue across the state during the weekend. The low pressure system associated with this front is expected to cross south SA and bring a following trough across southern coasts late 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

    18 °C

  • Highest 21 April, 2026

    29.4 °C

Climate (2021–Present)

Noarlunga (5km)

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  • Average Low 2021–2026

    12.8 °C

  • Average 2021–2026

    16.7 °C

  • Average High 2021–2026

    21.8 °C
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