Southport Lagoon Weather Forecast

    • 8
    • 15

    Shower or two

    • 11
    • 16

    Rain

    • 5
    • 12

    Showers increasing

    • 6
    • 13

    Showers easing

    • 9
    • 15

    Shower or two

    • 10
    • 15

    Cloudy

    • 9
    • 15

    Cloudy

Today 5 May South East

Partly cloudy. Medium chance of showers in the far south, slight chance elsewhere. Winds north to northwesterly 15 to 20 km/h tending west to northwesterly 15 to 25 km/h before dawn. Overnight temperatures falling to between 5 and 9 with daytime temperatures reaching between 11 and 18.

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  • Temperature Forecast Bureau of Meteorology

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Southport Lagoon Temperature Statistics View More

May Temperature

Cape Bruny (18km)

  • Lowest 4 May, 2026

    12.2 °C

  • Average May

    17.5 °C

  • Highest 1 May, 2026

    24.8 °C

Climate (2021–Present)

Cape Bruny (18km)

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  • Average Low 2021–2026

    9.6 °C

  • Average 2021–2026

    12.4 °C

  • Average High 2021–2026

    16.5 °C
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