Cape Thomas Weather Forecast

    • 13
    • 19

    Cloudy

    • 12
    • 18

    Cloudy

    • 11
    • 20

    Cloud clearing

    • 10
    • 23

    Mostly sunny

    • 14
    • 27

    Sunny

    • 17
    • 29

    Partly cloudy

    • 17
    • 25

    Partly cloudy

Today 24 Dec Lower South East

Cloudy. Slight chance of a shower in the morning and early afternoon. Winds west to southwesterly 20 to 30 km/h turning southerly 15 to 25 km/h during the afternoon and evening. Daytime maximum temperatures between 19 and 23.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
West to southwesterly 15 to 20 knots, reaching up to 25 knots south of Port MacDonnell during the morning and early afternoon. Winds tending south to southwesterly during the morning and early afternoon.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres offshore.
1st Swell
Southwesterly 4 metres.
Weather
Cloudy.
Weather Situation
A ridge of high pressure persists across South Australia this week as the high centre moves to the south of the Bight on Thursday, continuing eastwards on Friday, to be in the Tasman Sea on Saturday. A trough embedded in the southwesterly flow around the ridge clips the southeast this morning.
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

    17.8 °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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