Gunnamatta Beach Weather Forecast

    • 4
    • 20

    Partly cloudy

    • 12
    • 22

    Shower

    • 12
    • 18

    Shower

    • 9
    • 14

    Shower

    • 8
    • 14

    Cloudy

    • 8
    • 15

    Cloudy

    • 7
    • 19

    Partly cloudy

Today 12 Sep Mornington Peninsula

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

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
North to northeasterly about 10 knots increasing to 10 to 15 knots in the early afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres in the west.
Weather
Partly cloudy. The chance of morning fog inshore with reduced visibility.
Weather Situation
A strong high pressure system sits over eastern Victoria. The high will move over the Tasman Sea today, with winds tending warmer northerly. A low pressure trough will move across western and central Victoria later on Sunday, with a weak cold front then forecast to approach southwestern Victoria on Monday. The front will cross late Monday into early Tuesday and a high pressure ridge will push into western Victoria in its wake.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Gunnamatta Beach Temperature Statistics View More

September Temperature

Cerberus (28km)

  • Lowest 8 September, 2026

    3.3 °C

  • Average September

    12.3 °C

  • Highest 5 September, 2026

    17.6 °C

Climate (2021–2026)

Cerberus (28km)

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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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