Mount Martha South Beach Weather Forecast

    • 3
    • 21

    Morning fog then mostly sunny

    • 11
    • 23

    Late showers

    • 12
    • 18

    Shower or two

    • 9
    • 14

    Showers

    • 7
    • 14

    Cloudy

    • 7
    • 14

    Cloudy

    • 6
    • 20

    Mostly sunny

Today 12 Sep Mornington Peninsula

Patchy morning fog. Mostly sunny afternoon. Light winds becoming northerly 15 to 20 km/h in the evening.

Port Phillip Local Waters

Wind
Variable about 10 knots.
Seas
Below 1 metre.
Weather
Patchy morning fog with reduced visibility. Mostly sunny afternoon.
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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

    12.3 °C

  • Highest 5 September, 2026

    17.6 °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

    19.6 °C
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