Cape Thomas Weather Forecast

    • 8
    • 18

    Sunny

    • 14
    • 19

    Sunny

    • 14
    • 20

    Possible shower. Windy

    • 10
    • 14

    Cloudy

    • 6
    • 16

    Sunny

    • 8
    • 18

    Partly cloudy

    • 11
    • 21

    Possible shower

Today 18 Sep Lower South East

Sunny. Winds northerly 15 to 25 km/h tending northwesterly 20 to 30 km/h in the morning. Daytime maximum temperatures in the low 20s.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Northwesterly 15 to 20 knots, reaching up to 30 knots south of Beachport in the early afternoon.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres during the morning.
1st Swell
Southwesterly 2.5 to 3 metres, tending westerly 2.5 to 3 metres later in the evening.
Weather
Mostly sunny.
Weather Situation
A strong high pressure system centred over Victoria will maintain a ridge across SA as it drifts slowly over NSW. A cold front will then approach from the west late Saturday and move across SA on Sunday, before another ridge pushes in behind the front. The associated high will then move eastwards across waters south from Monday.
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

    14.1 °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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