Cape Douglas Offshore Weather Forecast

    • 11
    • 12

    Partly cloudy

    • 9
    • 13

    Partly cloudy

    • 10
    • 15

    Partly cloudy

    • 14
    • 18

    Shower

    • 15
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    Shower

    • 14
    • 14

    Shower

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    Partly cloudy

Today 21 Sep Lower South East

Cloudy. Winds southwesterly 20 to 30 km/h tending southerly 15 to 25 km/h in the early morning then becoming light in the late afternoon. Daytime maximum temperatures around 15.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
South to southwesterly 15 to 20 knots, reaching up to 25 knots south of Beachport early in the morning. Winds becoming variable about 10 knots in the early afternoon.
Seas
1 to 2 metres, decreasing to 1 metre around midday.
1st Swell
Southwesterly 4 to 5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system will move eastwards across waters to the south today then over Victoria and the Tasman Sea on Tuesday. This high will extend a ridge westwards over SA ahead of a low pressure trough that is expected to move over the far west of SA during Wednesday. The trough will slip southeastwards over the Bight during Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Douglas Offshore Temperature Statistics View More

September Temperature

Mount Gambier Airport (43km)

  • Lowest 8 September, 2026

    0.3 °C

  • Average September

    11.8 °C

  • Highest 19 September, 2026

    25.8 °C

Climate (2021–2026)

Mount Gambier Airport (43km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    13.7 °C

  • Average High 2021–2026

    20.1 °C
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