Mount Martha South Beach Weather Forecast

    • 9
    • 21

    Clear

    • 10
    • 28

    Sunny

    • 11
    • 31

    Sunny

    • 15
    • 30

    Becoming cloudy

    • 12
    • 22

    Partly cloudy

    • 13
    • 26

    Cloud clearing

    • 13
    • 28

    Partly cloudy

Today 27 Dec Mornington Peninsula

Clear. Winds southerly 15 to 25 km/h tending southeasterly in the evening then becoming light in the late evening.

Port Phillip Local Waters

Wind
Southerly 15 to 20 knots, becoming southeasterly 10 to 15 knots in the late evening.
Seas
Below 1 metre.
Weather
Clear.
Weather Situation
A high pressure system south of Tasmania will move into the Tasman Sea on Sunday and Monday. A trough will slowly cross Victoria from the west during Tuesday, and linger about the northeast on Wednesday as a high pressure system centred south of the Bight extends a ridge over Tasmania.
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  • Temperature Forecast Bureau of Meteorology

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Mount Martha South Beach Temperature Statistics View More

December Temperature

Cerberus (18km)

  • Lowest 3 December, 2025

    6 °C

  • Average December

    16 °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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