Gunnamatta Beach Weather Forecast

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    Shower

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    Shower

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    Shower

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    Shower

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    Shower

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    Partly cloudy

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    Shower

Today 18 Aug Mornington Peninsula

Mostly sunny day. Medium chance of showers in the evening. Winds northeasterly 15 to 25 km/h.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Northeasterly 15 to 20 knots.
Seas
1 to 1.5 metres.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres in the far west.
Weather
Mostly sunny.
Weather Situation
A high pressure system in the Tasman Sea extends a ridge over most of the state. A low pressure trough will move across South Australia on Tuesday and early Wednesday then will slip to the south of Victoria during Wednesday. A weak high pressure ridge will move over the state on Thursday and Friday, as a series of cold fronts move across Tasmania.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Gunnamatta Beach Temperature Statistics View More

August Temperature

Cerberus (28km)

  • Lowest 2 August, 2026

    2.3 °C

  • Average August

    10.5 °C

  • Highest 2 August, 2026

    17.4 °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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