Gunnamatta Beach Weather Forecast

    • 6
    • 15

    Partly cloudy

    • 8
    • 14

    Shower

    • 9
    • 15

    Cloudy

    • 8
    • 16

    Partly cloudy

    • 8
    • 19

    Partly cloudy

    • 12
    • 21

    Shower

    • 13
    • 20

    Shower

Today 8 Sep Mornington Peninsula

Mostly sunny day. Slight chance of a shower at night. Light winds becoming southwesterly 15 to 20 km/h in the evening then tending westerly 15 to 25 km/h in the late evening.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Westerly 15 to 20 knots increasing to 15 to 25 knots in the late afternoon. Winds reaching up to 30 knots in the evening.
Seas
Around 1 metre, increasing to 1.5 to 2.5 metres during the afternoon.
1st Swell
Southwesterly 1 to 2 metres, increasing to 2 to 3 metres in the west.
Weather
Partly cloudy. 50% chance of showers in the evening.
Weather Situation
A high pressure system south of the Bight extends a ridge over Victoria. A weak cold front will clip southern Victoria this evening, before the high pressure system drifts eastward over Victoria later in the week, moving into the Tasman Sea by the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Gunnamatta Beach Temperature Statistics View More

September Temperature

Cerberus (28km)

  • Lowest 1 September, 2026

    4.9 °C

  • Average September

    13.1 °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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