Cape Northumberland Weather Forecast

    • 10
    • 23

    Sunny

    • 13
    • 21

    Partly cloudy

    • 10
    • 22

    Partly cloudy

    • 11
    • 22

    Sunny

    • 11
    • 23

    Partly cloudy

    • 11
    • 25

    Partly cloudy

    • 13
    • 24

    Shower

Today 18 Mar Lower South East

Partly cloudy. The chance of morning fog in the south. Light winds becoming southerly 20 to 30 km/h in the middle of the day. Overnight temperatures falling to between 9 and 13 with daytime temperatures reaching the mid to high 20s.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Southeasterly 10 to 15 knots, reaching up to 20 knots north of Port MacDonnell during the afternoon and evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres north of Port MacDonnell by early evening.
1st Swell
Southwesterly 2 metres.
Weather
Mostly sunny.
Graph Plots Open in Graphs

  • 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

    16.2 °C

  • Highest 10 March, 2026

    30.4 °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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