Sullivan Bay Weather Forecast

    • 13
    • 21

    Shower

    • 12
    • 17

    Shower

    • 10
    • 14

    Shower

    • 9
    • 13

    Windy

    • 9
    • 14

    Cloudy

    • 9
    • 19

    Sunny

    • 12
    • 21

    Partly cloudy

Today 13 Sep Mornington Peninsula

Partly cloudy. Medium chance of showers this evening. The chance of a thunderstorm late this afternoon and evening. Winds northerly 30 to 45 km/h.

Port Phillip Local Waters

Wind
Northerly 15 to 25 knots.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the morning.
Weather
Partly cloudy. 60% chance of showers this evening. The chance of a thunderstorm late this afternoon and evening.
Weather Situation
A high pressure system currently lies over the western Tasman Sea, directing a warm northerly flow over Victoria. A low pressure trough will move across western and central Victoria later on Sunday, with a weak cold front then forecast to approach southwestern Victoria during Monday. The front will cross late Monday into early Tuesday, before a strong high pressure ridge pushes into western Victoria in its wake.
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  • Temperature Forecast Bureau of Meteorology

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Sullivan Bay Temperature Statistics View More

September Temperature

Cerberus (36km)

  • Lowest 8 September, 2026

    3.3 °C

  • Average September

    12.1 °C

  • Highest 5 September, 2026

    17.6 °C

Climate (2021–2026)

Cerberus (36km)

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  • Average Low 2021–2026

    10.2 °C

  • Average 2021–2026

    14.6 °C

  • Average High 2021–2026

    19.6 °C
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