Cape Thomas Weather Forecast

    • 13
    • 17

    Shower or two

    • 10
    • 16

    Possible shower

    • 7
    • 16

    Partly cloudy

    • 7
    • 19

    Partly cloudy

    • 13
    • 24

    Possible late shower

    • 13
    • 17

    Showers easing

    • 11
    • 19

    Showers

Today 25 Sep Lower South East

Cloudy. High chance of showers in the south, medium chance elsewhere. The chance of a thunderstorm near the eastern border during this afternoon and evening. Light winds becoming west to southwesterly 15 to 20 km/h in the middle of the day then turning southerly in the early afternoon. Daytime maximum temperatures between 18 and 22.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Variable below 10 knots becoming southerly 10 to 15 knots in the morning then tending southeasterly in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the morning, then increasing to 1.5 to 2 metres around midday.
Weather
Cloudy. 80% chance of showers.
Weather Situation
A low pressure trough extends from WA over western SA. This trough will be very slow-moving for the rest of this week and over the weekend. A weakening cold front will slip across southern coasts during today. Another low pressure trough will develop over WA on Sunday and Monday then move over SA early to mid next week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Thomas Temperature Statistics View More

September Temperature

Robe (10km)

  • Lowest 17 September, 2026

    3.7 °C

  • Average September

    14.4 °C

  • Highest 11 September, 2026

    20.1 °C

Climate (2021–2026)

Robe (10km)

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  • Average Low 2021–2026

    11.3 °C

  • Average 2021–2026

    16 °C

  • Average High 2021–2026

    18.5 °C
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