Gunnamatta Beach Weather Forecast

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Today 4 May Mornington Peninsula

Partly cloudy. High chance of showers, most likely in the late afternoon and evening. The chance of a thunderstorm in the late afternoon and evening. Winds northerly 25 to 40 km/h tending northwesterly in the evening.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Northerly 20 to 25 knots turning northwesterly in the evening. Winds reaching up to 30 knots in the evening.
Seas
1.5 to 2.5 metres.
1st Swell
Westerly 1 to 2 metres, decreasing to 1 to 1.5 metres around midday, then tending west to southwesterly 1 to 1.5 metres during the afternoon.
Weather
Becoming cloudy. 90% chance of showers. The chance of a thunderstorm in the late afternoon and evening.
Weather Situation
A low pressure system drifts eastward south of the Bight, extending a cold front over eastern Bass Strait. This front will continue to move slowly eastward, clearing the east of the Strait this morning. The low pressure system will then move over Bass Strait this overnight Monday with a cool southwesterly airstream in its wake. A cold front moving south of the Bight is likely to reach western waters later Wednesday or Thursday.
Graph Plots Open in Graphs
  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Gunnamatta Beach Temperature Statistics View More

May Temperature

Cerberus (28km)

  • Lowest 2 May, 2026

    10.5 °C
  • Average May

    17.7 °C
  • Highest 1 May, 2026

    27.8 °C

Climate (2021–Present)

Cerberus (28km)

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  • Average Low 2021–2026

    10.2 °C
  • Average 2021–2026

    14.5 °C
  • Average High 2021–2026

    19.6 °C
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