Cape Douglas Offshore Weather Forecast

    • 12
    • 18

    Shower

    • 14
    • 15

    Cloudy

    • 13
    • 20

    Partly cloudy

    • 18
    • 18

    Shower

    • 15
    • 18

    Partly cloudy

    • 17
    • 21

    Partly cloudy

    • 17
    • 18

    Shower

Today 19 Apr Lower South East

Partly cloudy. High chance of showers, becoming less likely this afternoon. The chance of a thunderstorm during the morning and afternoon. Winds north to northeasterly 15 to 20 km/h shifting south to southwesterly 15 to 25 km/h in the late afternoon. Daytime maximum temperatures in the low to mid 20s.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Northerly 10 to 15 knots, reaching up to 20 knots offshore during the morning. Winds shifting south to southwesterly in the early afternoon.
Seas
1 to 1.5 metres.
1st Swell
Southerly 1 to 1.5 metres, increasing to 1.5 to 2 metres south of Port MacDonnell.
Weather
Partly cloudy. 60% chance of showers. The chance of a thunderstorm this morning.
Weather Situation
A high pressure system centred west of Tasmania extends a ridge over western Victoria. A cold front over the far west of SA will weaken as it moves eastwards over central and eastern parts this morning. The high will move eastwards to be centred southeast of Tasmania later today but will continue to extend a ridge over SA early next week. Another front will move across the south of SA late Tuesday and early Wednesday then another high will move across waters to the south during Wednesday.
Graph Plots Open in Graphs
  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Douglas Offshore Temperature Statistics View More

April Temperature

Mount Gambier Airport (43km)

  • Lowest 18 April, 2026

    3 °C
  • Average April

    13.7 °C
  • Highest 5 April, 2026

    25.3 °C

Climate (2021–Present)

Mount Gambier Airport (43km)

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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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