Gunnamatta Beach Weather Forecast

    • 7
    • 21

    Partly cloudy

    • 13
    • 22

    Sunny

    • 13
    • 24

    Shower

    • 9
    • 15

    Shower

    • 6
    • 16

    Sunny

    • 7
    • 20

    Partly cloudy

    • 10
    • 23

    Partly cloudy

Today 18 Sep Mornington Peninsula

Mostly clear. Winds northwesterly 20 to 25 km/h.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Northwesterly 20 to 25 knots, reaching up to 30 knots offshore.
Seas
1.5 to 2.5 metres.
1st Swell
Southwesterly 2 metres, increasing to 2 to 3 metres in the west.
Weather
Partly cloudy.
Weather Situation
A high pressure system over NSW will persist into Saturday as a cold front crosses waters south of the Bight. The front is forecast to enter western Victoria on Sunday afternoon, reaching central districts during the evening before crossing eastern Victoria on Sunday night. A high pressure system south of the Bight will move quickly east on Monday, moving over western Bass Strait by Monday night as it extends a ridge over southern Victoria. The high will then move over the Tasman Sea on Tuesday.
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 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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