O'Sullivan Beach Weather Forecast

    • 14
    • 28

    Sunny

    • 15
    • 29

    Sunny

    • 15
    • 24

    Partly cloudy

    • 15
    • 26

    Partly cloudy

    • 16
    • 30

    Mostly sunny

    • 19
    • 33

    Mostly sunny

    • 21
    • 32

    Mostly sunny

Today 13 Jan Adelaide

Sunny. Winds southeasterly 15 to 25 km/h tending southeast to southwesterly in the early afternoon then becoming southeasterly 20 to 30 km/h in the late afternoon.

Adelaide Metropolitan Waters

Wind
Southeasterly 10 to 15 knots tending southeast to southwesterly 15 to 20 knots in the early afternoon then tending southeasterly in the evening. Winds reaching up to 25 knots north of Grange in the evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres north of Grange during the afternoon.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Sunny.
Weather Situation
A high pressure ridge south of SA will persist over the coming days, with a high centre moving to the south of the Bight mid week. The high will continue moving eastwards into the Tasman Sea later in the week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

O'Sullivan Beach Temperature Statistics View More

January Temperature

Noarlunga (5km)

  • Lowest 1 January, 2026

    11.2 °C

  • Average January

    22.5 °C

  • Highest 7 January, 2026

    43.3 °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

    21.7 °C
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