Cape Northumberland Weather Forecast

    • 15
    • 21

    Shower

    • 11
    • 17

    Partly cloudy

    • 7
    • 18

    Shower

    • 12
    • 19

    Storm

    • 10
    • 15

    Shower

    • 8
    • 16

    Cloudy

    • 7
    • 18

    Shower

Today 19 Oct Lower South East

Cloudy. Medium chance of showers. Light winds.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
West to southwesterly about 10 knots.
Seas
Below 0.5 metres, increasing to below 1 metre south of Beachport.
1st Swell
Southwesterly 2 metres.
Weather
Cloudy. 50% chance of showers north of Port MacDonnell, near zero chance elsewhere.
Weather Situation
A trough spanning from the west and into the Gulfs will move inland through Sunday evening. Following this a low pressure system will move into the Bight by Tuesday bring a strong cold front with its passing. As the low moves off the Lower South East Coast Wednesday morning, the associated front will exit eastern waters and continue through Bass Strait. In the wake of this front a high pressure system will move into the Bight, passing over central coasts late Thursday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

October Temperature

Mount Gambier Airport (36km)

  • Lowest 13 October, 2025

    4.3 °C
  • Average October

    12.7 °C
  • Highest 16 October, 2025

    24.7 °C

Climate (2020–Present)

Mount Gambier Airport (36km)

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  • Average Low 2020–2025

    8.8 °C
  • Average 2020–2025

    13.7 °C
  • Average High 2020–2025

    20 °C
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