Cape Portland Weather Forecast

    • 9
    • 15

    Windy

    • 8
    • 14

    Shower

    • 9
    • 16

    Shower

    • 8
    • 17

    Sunny

    • 7
    • 16

    Shower

    • 5
    • 15

    Windy

    • 5
    • 15

    Partly cloudy

Today 3 Sep North East

Partly cloudy. Medium chance of showers, becoming less likely in the late afternoon and evening. Snow possible above 1100 metres. Damaging winds possible. Winds westerly 35 to 50 km/h. Daytime maximum temperatures between 9 and 15.

Banks Strait and Franklin

Wind
Westerly 25 to 30 knots, reaching up to 35 knots about Banks Strait during the afternoon and evening.
Seas
2.5 to 3 metres.
1st Swell
West to northwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres around midday.
Weather
Partly cloudy. 60% chance of showers.
Weather Situation
A strong westerly flow will gradually ease through Thursday evening and Friday before a low pressure system approaches from the west early Saturday. This low is expected to cross southern Tasmania on Saturday, bringing a series of troughs and a cold front over the state. A west to southwesterly airstream is expected to follow the low with a new weak cold front approaching the west coast late Sunday. This front is expected to cross the state on Monday before a ridge of high pressure develops from the west.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Portland Temperature Statistics View More

September Temperature

Swan Island (12km)

  • Lowest 1 September, 2026

    10.3 °C

  • Average September

    13.1 °C

  • Highest 1 September, 2026

    15.5 °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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