Cape Northumberland Weather Forecast

    • 3
    • 17

    Partly cloudy

    • 7
    • 21

    Sunny

    • 12
    • 19

    Shower

    • 11
    • 17

    Shower

    • 9
    • 14

    Shower

    • 8
    • 15

    Cloudy

    • 6
    • 18

    Partly cloudy

Today 11 Sep Lower South East

Patchy fog and the chance of frost in the morning. Mostly sunny afternoon. Light winds. Overnight temperatures falling to around 3 with daytime temperatures reaching around 19.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
East to southeasterly 10 to 15 knots tending east to northeasterly below 10 knots during the afternoon and evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 4 metres.
Weather
Mostly sunny.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

September Temperature

Mount Gambier Airport (36km)

  • Lowest 8 September, 2026

    0.3 °C

  • Average September

    10.8 °C

  • Highest 1 September, 2026

    18.3 °C

Climate (2021–2026)

Mount Gambier Airport (36km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    13.7 °C

  • Average High 2021–2026

    20 °C
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