Cape Portland Weather Forecast

    • 3
    • 15

    Partly cloudy

    • 9
    • 16

    Shower

    • 5
    • 16

    Partly cloudy

    • 7
    • 16

    Sunny

    • 7
    • 15

    Partly cloudy

    • 9
    • 17

    Shower

    • 10
    • 16

    Shower

Today 27 Aug North East

Mostly sunny. The chance of fog about higher ground early this morning. Areas of morning frost. Light winds becoming west to northwesterly 20 to 30 km/h in the middle of the day. Daytime maximum temperatures between 12 and 16.

Banks Strait and Franklin

Wind
Variable about 10 knots becoming westerly 15 to 20 knots in the middle of the day. Winds reaching up to 25 knots near Eddystone Point in the late evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres by early evening.
1st Swell
Easterly below 0.5 metres, tending southeasterly 1 to 1.5 metres around midday.
Weather
Sunny.
Weather Situation
A high pressure system moves to north of the state today while a cold front approaches the southwest late in the day before crossing Tasmania early Friday. Another high pressure system is expected to build south of the Bight on Saturday and extend a ridge to the north of Tasmania, with the high centre to move near Adelaide on Sunday and extend a ridge over Tasmania.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Portland Temperature Statistics View More

August Temperature

Swan Island (12km)

  • Lowest 7 August, 2026

    7 °C

  • Average August

    12.1 °C

  • Highest 19 August, 2026

    16.7 °C

Climate (2021–2026)

Swan Island (12km)

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  • Average Low 2021–2026

    12 °C

  • Average 2021–2026

    14.4 °C

  • Average High 2021–2026

    17.5 °C
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