Mount Martha South Beach Weather Forecast

    • 9
    • 14

    Showers

    • 7
    • 14

    Cloudy

    • 7
    • 15

    Cloudy

    • 6
    • 21

    Mostly sunny

    • 11
    • 23

    Sunny

    • 13
    • 23

    Becoming cloudy

    • 10
    • 17

    Cloudy

Today 15 Sep Mornington Peninsula

Partly cloudy. Very high chance of showers, most likely in the morning and afternoon. Possible small hail. Winds westerly 20 to 30 km/h turning southwesterly 30 to 45 km/h in the morning.

Port Phillip Local Waters

Wind
Westerly 10 to 15 knots turning southwesterly 20 to 25 knots in the late morning. Winds reaching up to 30 knots in the afternoon.
Seas
Around 1 metre, increasing to 1 to 2 metres around midday.
Weather
Partly cloudy. 80% chance of showers, with possible small hail in the morning and afternoon.
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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 8 September, 2026

    3.3 °C

  • Average September

    12.9 °C

  • Highest 13 September, 2026

    25.6 °C

Climate (2021–2026)

Cerberus (18km)

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  • Average Low 2021–2026

    10.2 °C

  • Average 2021–2026

    14.6 °C

  • Average High 2021–2026

    19.7 °C
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