Cape Thomas Weather Forecast

    • 10
    • 23

    Sunny

    • 15
    • 27

    Sunny

    • 17
    • 30

    Partly cloudy

    • 15
    • 20

    Becoming windy. Cloudy

    • 13
    • 20

    Becoming windy. Partly cloudy

    • 12
    • 22

    Partly cloudy

    • 13
    • 23

    Partly cloudy

Today 27 Dec Lower South East

Sunny. Winds easterly 15 to 20 km/h tending southeasterly 15 to 25 km/h in the early afternoon then becoming light in the late evening. Daytime maximum temperatures 25 to 31.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
East to southeasterly 10 to 15 knots, reaching up to 20 knots south of Beachport during the day.
Seas
Around 1 metre, increasing to 1 to 1.5 metres south of Beachport.
1st Swell
Southwesterly 1.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system maintains a broad ridge over most of South Australia. A low pressure trough enters western parts of the state later today and continues moving east on Sunday, reaching central parts on Monday. The deepening trough moves into eastern parts of SA on Tuesday, while a new ridge builds across the west.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Thomas Temperature Statistics View More

December Temperature

Robe (10km)

  • Lowest 16 December, 2025

    8 °C

  • Average December

    17.7 °C

  • Highest 12 December, 2025

    29 °C

Climate (2020–Present)

Robe (10km)

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  • Average Low 2020–2025

    11.2 °C

  • Average 2020–2025

    15.9 °C

  • Average High 2020–2025

    18.4 °C
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