Cape Douglas Weather Forecast

    • 15
    • 24

    Cloudy

    • 13
    • 20

    Cloudy

    • 12
    • 17

    Shower

    • 10
    • 19

    Shower

    • 12
    • 18

    Shower

    • 12
    • 20

    Shower

    • 11
    • 18

    Cloudy

Today 19 Dec Lower South East

Partly cloudy. Slight chance of a shower. Winds southwesterly 20 to 30 km/h. Daytime maximum temperatures 24 to 33.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Southwesterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres south of Port MacDonnell.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Cloudy. The chance of a thunderstorm offshore later this evening.
Weather Situation
A broad trough of low pressure lies over east and northern parts of the State. This area of low pressure is expected to linger over the northeast Saturday before moving east Sunday with the next low pressure system that develops south of the bight. A high pressure ridge then extends over the west and south during Sunday, and throughout by Monday. A persistent high pressure ridge remains over the State and Coastal Waters during Tuesday and Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Douglas Temperature Statistics View More

December Temperature

Mount Gambier Airport (35km)

  • Lowest 7 December, 2025

    4.7 °C

  • Average December

    15.8 °C

  • Highest 17 December, 2025

    34.3 °C

Climate (2020–Present)

Mount Gambier Airport (35km)

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  • Average Low 2020–2025

    8.8 °C

  • Average 2020–2025

    13.6 °C

  • Average High 2020–2025

    19.9 °C
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