Mount Martha South Beach Weather Forecast

    • 8
    • 15

    Possible morning shower

    • 6
    • 20

    Partly cloudy

    • 11
    • 20

    Showers increasing

    • 6
    • 14

    Showers

    • 8
    • 16

    Showers

    • 7
    • 15

    Showers

    • 6
    • 16

    Shower or two

Today 17 Sep Mornington Peninsula

Partly cloudy. Medium chance of showers, most likely during the morning. Winds westerly 25 to 40 km/h decreasing to 20 to 30 km/h in the late afternoon then becoming west to northwesterly and light in the late evening.

Port Phillip Local Waters

Wind
Westerly 15 to 20 knots decreasing to about 10 knots in the evening.
Seas
1 to 1.5 metres, decreasing below 1 metre by early evening.
Weather
Partly cloudy.
Weather Situation
Strong westerly flow over Bass Strait will persist as a high pressure system passes to the north of Victoria. The high will move into the Tasman on Thursday, before another cold front crosses Bass Strait on Friday.
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  • Temperature Forecast Bureau of Meteorology

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Mount Martha South Beach Temperature Statistics View More

September Temperature

Cerberus (18km)

  • Lowest 5 September, 2025

    2.2 °C

  • Average September

    12.9 °C

  • Highest 6 September, 2025

    21.4 °C

Climate (2020–Present)

Cerberus (18km)

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  • Average Low 2020–2025

    10.2 °C

  • Average 2020–2025

    14.5 °C

  • Average High 2020–2025

    19.6 °C
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