Portsea Weather Forecast

    • 7
    • 15

    Partly cloudy

    • 9
    • 14

    Shower

    • 10
    • 14

    Cloudy

    • 9
    • 14

    Partly cloudy

    • 9
    • 18

    Partly cloudy

    • 12
    • 19

    Shower

    • 12
    • 19

    Shower

Today 8 Sep Mornington Peninsula

Mostly sunny day. Slight chance of a shower later tonight. Light winds becoming southwesterly 15 to 20 km/h in the evening then tending westerly 15 to 25 km/h in the late evening.

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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Portsea Temperature Statistics View More

September Temperature

Avalon Airport (39km)

  • Lowest 1 September, 2026

    4 °C

  • Average September

    12.9 °C

  • Highest 1 September, 2026

    21.8 °C

Climate (2021–2026)

Avalon Airport (39km)

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  • Average Low 2021–2026

    9.8 °C

  • Average 2021–2026

    14.6 °C

  • Average High 2021–2026

    20.6 °C
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