Cape Northumberland Weather Forecast

    • 12
    • 28

    Clear

    • 14
    • 30

    Partly cloudy

    • 16
    • 22

    Shower

    • 10
    • 21

    Shower

    • 12
    • 18

    Cloudy

    • 10
    • 19

    Cloudy

    • 8
    • 22

    Sunny

Today 30 Mar Lower South East

Clear. Light winds.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Northerly 10 to 15 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 metres.
Weather
Clear.
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.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

March Temperature

Mount Gambier Airport (36km)

  • Lowest 10 March, 2026

    7.2 °C
  • Average March

    16.1 °C
  • Highest 23 March, 2026

    31.5 °C

Climate (2021–Present)

Mount Gambier Airport (36km)

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  • Average Low 2021–2026

    8.8 °C
  • Average 2021–2026

    13.7 °C
  • Average High 2021–2026

    20 °C
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