Cape Northumberland Weather Forecast

    • 12
    • 25

    Partly cloudy

    • 11
    • 18

    Cloudy

    • 10
    • 20

    Cloudy

    • 10
    • 22

    Shower

    • 12
    • 20

    Shower

    • 11
    • 18

    Shower

    • 9
    • 18

    Shower

Today 10 Nov Lower South East

Partly cloudy. Winds northwest to northeasterly 15 to 20 km/h tending northwest to southwesterly 15 to 25 km/h in the early afternoon then tending south to southwesterly 20 to 30 km/h in the late afternoon. Daytime maximum temperatures 26 to 31.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Variable about 10 knots becoming southerly 15 to 25 knots in the middle of the day. Winds reaching up to 30 knots north of Beachport in the evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the afternoon, then increasing to 1.5 to 2 metres by early evening.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Becoming cloudy. The chance of a thunderstorm south of Beachport in the late morning and early afternoon.
Weather Situation
A low pressure system and trough currently over the eastern SA will gradually drift eastwards, clearing the border in the afternoon. A weak ridge of high pressure will develop south of the Bight on Wednesday, lingering into Thursday. A trough will then begin to move into the far west late Thursday, slowly drifting northeastwards across the state Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

November Temperature

Mount Gambier Airport (36 km)

  • Lowest 8 November, 2026

    3.8 °C

  • Average November

    12.6 °C

  • Highest 3 November, 2026

    23 °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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