Gunnamatta Beach Weather Forecast

    • 9
    • 15

    Partly cloudy

    • 7
    • 15

    Partly cloudy

    • 5
    • 19

    Partly cloudy

    • 11
    • 22

    Shower

    • 12
    • 19

    Shower

    • 9
    • 15

    Shower

    • 8
    • 14

    Cloudy

Today 10 Sep Mornington Peninsula

Mostly clear. Winds southwesterly 15 to 20 km/h becoming light in the evening.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Southwesterly 10 to 15 knots, reaching up to 20 knots in the far east during the afternoon and evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres in the far east.
1st Swell
Southwesterly 2 to 2.5 metres, increasing to 2.5 to 4 metres in the west.
Weather
Partly cloudy.
Weather Situation
A strong high pressure system to the west is extending a ridge across Victoria. The high will cross Bass Strait on Friday, with winds tending warmer northerly on Saturday as the high moves over the Tasman Sea. 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.
Graph Plots Open in Graphs

  • 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

    12.6 °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

    19.7 °C
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