Gunnamatta Beach Weather Forecast

    • 13
    • 24

    Windy

    • 9
    • 14

    Shower

    • 4
    • 16

    Partly cloudy

    • 6
    • 18

    Partly cloudy

    • 9
    • 23

    Cloudy

    • 14
    • 23

    Cloudy

    • 12
    • 18

    Shower

Today 20 Sep Mornington Peninsula

Sunny morning. Medium chance of showers, most likely at night. Winds northerly 25 to 40 km/h increasing to 40 to 60 km/h in the morning then turning westerly 25 to 35 km/h in the late afternoon.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
North to northwesterly 15 to 25 knots, reaching up to 30 knots during the day. Winds turning westerly 20 to 25 knots in the late afternoon.
Seas
Around 1 metre, increasing to 1.5 to 2 metres during the morning, then increasing to 2 to 3 metres around midday.
1st Swell
Southwesterly 1.5 to 2.5 metres, tending westerly 2 to 3 metres by early evening.
Weather
Mostly sunny day. 60% chance of showers in the evening.
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  • 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

    12.9 °C

  • Highest 13 September, 2026

    25.6 °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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