Gunnamatta Beach Weather Forecast

    • 5
    • 16

    Clear

    • 5
    • 18

    Partly cloudy

    • 9
    • 23

    Cloudy

    • 14
    • 22

    Shower

    • 11
    • 16

    Shower

    • 8
    • 16

    Partly cloudy

    • 8
    • 20

    Partly cloudy

Today 22 Sep Mornington Peninsula

Clear. Winds southeasterly 15 to 25 km/h becoming light in the late evening.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Southeasterly 10 to 15 knots turning easterly in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 2.5 metres, increasing to 2.5 to 4 metres in the west.
Weather
Clear.
Weather Situation
A high pressure system over the Bass Strait will move into the Tasman Sea during the week, directing a warm north to northeasterly airstream over Victoria during the second half of the week. Another high pressure system moves in from the west from Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Gunnamatta Beach Temperature Statistics View More

September Temperature

Cerberus (28km)

  • Lowest 18 September, 2026

    2.4 °C

  • Average September

    13.3 °C

  • Highest 20 September, 2026

    26.2 °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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