Cape Northumberland Weather Forecast

    • 12
    • 31

    Partly cloudy

    • 15
    • 25

    Shower

    • 9
    • 20

    Shower

    • 11
    • 16

    Shower

    • 8
    • 16

    Shower

    • 7
    • 17

    Shower

    • 8
    • 18

    Shower

Today 22 Oct Lower South East

Mostly sunny. Winds northerly 20 to 30 km/h turning west to northwesterly 15 to 20 km/h in the early afternoon then becoming light in the evening. Daytime maximum temperatures in the low 30s.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Northerly 10 to 15 knots tending northwesterly in the early afternoon then becoming variable below 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 3 metres.
Weather
Mostly sunny.
Weather Situation
A slow moving high pressure system in the Tasman Sea maintains a ridge across eastern parts of the state. A trough of low pressure is forecast to move into the west on Thursday, and slowly move eastwards on Friday. Another trough and multiple cold fronts move over the state over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

October Temperature

Mount Gambier Airport (36 km)

  • Lowest 7 October, 2026

    2.8 °C

  • Average October

    14.4 °C

  • Highest 19 October, 2026

    28.9 °C

Climate (2021–2026)

Mount Gambier Airport (36 km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    13.8 °C

  • Average High 2021–2026

    20.1 °C
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