Mount Martha South Beach Weather Forecast

    • 14
    • 22

    Possible morning shower

    • 11
    • 21

    Showers. Possible storm

    • 11
    • 20

    Possible shower

    • 11
    • 19

    Shower or two

    • 12
    • 21

    Possible shower

    • 11
    • 19

    Cloudy

    • 11
    • 19

    Cloudy

Today 20 Dec Mornington Peninsula

Cloudy. Slight chance of a shower early this morning. Winds southwesterly 15 to 25 km/h turning southerly in the late afternoon.

Port Phillip Local Waters

Wind
Southwesterly 10 to 15 knots turning south to southeasterly 15 to 20 knots during the afternoon and evening.
Seas
Around 1 metre.
Weather
Partly cloudy.
Weather Situation
A broad area of low pressure over Victoria and Bass Strait is expected to slowly move eastwards during today. Another, more intense, low pressure system and associated cold front are forecast to move across Victoria and Bass Strait on Sunday. A high pressure ridge then builds across the Bass Strait from Monday to Thursday to direct a west to southwesterly flow over Coastal Waters.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mount Martha South Beach Temperature Statistics View More

December Temperature

Cerberus (18km)

  • Lowest 3 December, 2025

    6 °C

  • Average December

    16.5 °C

  • Highest 18 December, 2025

    35.8 °C

Climate (2020–Present)

Cerberus (18km)

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  • Average Low 2020–2025

    10.1 °C

  • Average 2020–2025

    14.5 °C

  • Average High 2020–2025

    19.5 °C
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