Mount Martha South Beach Weather Forecast

    • 12
    • 30

    Partly cloudy

    • 13
    • 23

    Cloudy

    • 11
    • 23

    Mostly sunny

    • 10
    • 28

    Mostly sunny

    • 15
    • 36

    Sunny

    • 17
    • 29

    Partly cloudy

    • 15
    • 34

    Possible shower

Today 3 Jan Mornington Peninsula

Partly cloudy. Slight chance of a shower. The chance of a thunderstorm during this afternoon and early evening. Light winds becoming south to southwesterly 15 to 25 km/h in the early afternoon.

Port Phillip Local Waters

Wind
Variable about 10 knots becoming south to southwesterly 15 to 20 knots in the early afternoon.
Seas
Below 0.5 metres, increasing to around 1 metre during the afternoon.
Weather
Partly cloudy. The chance of a thunderstorm during this afternoon and early evening.
Weather Situation
A high pressure system centred south of SA extends a ridge over Victoria. The ridge will contract southwards today as a trough to the north extends over western Victoria. This trough will move slowly eastwards across the state over the weekend. A new high pressure system south of SA will extend a ridge over Victoria on Monday. The high will move eastwards during Tuesday but will continue to extend a ridge over Victoria.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mount Martha South Beach Temperature Statistics View More

January Temperature

Cerberus (18km)

  • Lowest 2 January, 2026

    8.5 °C

  • Average January

    15.7 °C

  • Highest 1 January, 2026

    19.4 °C

Climate (2021–Present)

Cerberus (18km)

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  • Average Low 2021–2026

    10.1 °C

  • Average 2021–2026

    14.5 °C

  • Average High 2021–2026

    19.5 °C
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