Cape Northumberland Weather Forecast

    • 4
    • 17

    Shower

    • 12
    • 18

    Rain

    • 13
    • 19

    Shower

    • 11
    • 17

    Shower

    • 9
    • 16

    Shower

    • 10
    • 15

    Shower

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    • 14

    Shower

Today 15 Jun Lower South East

Becoming cloudy. Very high chance of rain, most likely late this afternoon and evening. Winds northeasterly 15 to 20 km/h turning northerly 15 to 25 km/h in the late morning and afternoon. Daytime maximum temperatures around 17.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Northerly 15 to 25 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Partly cloudy. Near 100% chance of rain.
Weather Situation
A weak high pressure system to the east extends a ridge over SA. A northerly flow across South Australia will increase ahead of a slow-moving low pressure system that is expected to track along the SA coast this week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

June Temperature

Mount Gambier Airport (36km)

  • Lowest 14 June, 2026

    2.6 °C

  • Average June

    11.5 °C

  • Highest 12 June, 2026

    20.1 °C

Climate (2021–Present)

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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