Gunnamatta Beach Weather Forecast

    • 12
    • 29

    Partly cloudy

    • 17
    • 23

    Shower

    • 11
    • 19

    Shower

    • 11
    • 17

    Cloudy

    • 10
    • 19

    Cloudy

    • 10
    • 28

    Sunny

    • 16
    • 28

    Partly cloudy

Today 12 Dec Mornington Peninsula

Sunny morning. The chance of a thunderstorm in the afternoon and early evening. Winds easterly 15 to 25 km/h turning north to northeasterly 25 to 35 km/h in the early morning then tending east to northeasterly 15 to 25 km/h in the late afternoon.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Easterly 15 to 20 knots turning northeasterly 10 to 15 knots during the day.
Seas
1 to 1.5 metres, decreasing to 1 metre around midday.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres in the far west.
Weather
Mostly sunny.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Gunnamatta Beach Temperature Statistics View More

December Temperature

Cerberus (28km)

  • Lowest 3 December, 2025

    6 °C

  • Average December

    15.3 °C

  • Highest 4 December, 2025

    34 °C

Climate (2020–Present)

Cerberus (28km)

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  • Average Low 2020–2025

    10.1 °C

  • Average 2020–2025

    14.5 °C

  • Average High 2020–2025

    19.5 °C
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