O'Sullivan Beach Weather Forecast

    • 19
    • 28

    Mostly sunny

    • 17
    • 23

    Early showers

    • 13
    • 23

    Mostly sunny

    • 13
    • 22

    Partly cloudy

    • 12
    • 23

    Sunny

    • 13
    • 25

    Sunny

    • 17
    • 25

    Partly cloudy

Today 31 Mar Adelaide

Mostly sunny day. Slight chance of a shower later tonight. Winds northeasterly 15 to 20 km/h tending northwest to northeasterly 20 to 30 km/h in the early morning.

Adelaide Metropolitan Waters

Wind
Northeasterly 10 to 15 knots turning northerly in the morning.
Seas
Around 1 metre.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
A high pressure system over the Tasman sea extends a weak ridge over SA. A trough over central WA extends over southwest SA, and is forecast to move across the west and south later Tuesday, pushing into the northeast of SA on Wednesday. Another high pressure system is expected to become established south of the Bight late in the week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

O'Sullivan Beach Temperature Statistics View More

March Temperature

Noarlunga (5km)

  • Lowest 27 March, 2026

    11.1 °C

  • Average March

    19.5 °C

  • Highest 10 March, 2026

    33 °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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