Sullivan Bay Weather Forecast

    • 11
    • 27

    Partly cloudy

    • 15
    • 29

    Sunny

    • 17
    • 26

    Shower

    • 15
    • 19

    Cloudy

    • 13
    • 20

    Shower

    • 13
    • 19

    Cloudy

    • 13
    • 18

    Partly cloudy

Today 17 Dec Mornington Peninsula

Mostly clear. Winds southeasterly 15 to 20 km/h.

Port Phillip Local Waters

Wind
Southeasterly 10 to 15 knots.
Seas
Below 1 metre.
Weather
Clear.
Weather Situation
A high pressure system in the Tasman Sea maintains a ridge across Victoria, until a broad area of low pressure develops to the west late Thursday. The low is forecast to slowly move across the state during Friday and Saturday, before another low and associated cold front move across Victoria on Sunday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sullivan Bay Temperature Statistics View More

December Temperature

Cerberus (36km)

  • Lowest 3 December, 2025

    6 °C

  • Average December

    15.7 °C

  • Highest 4 December, 2025

    34 °C

Climate (2020–Present)

Cerberus (36km)

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  • Average Low 2020–2025

    10.1 °C

  • Average 2020–2025

    14.5 °C

  • Average High 2020–2025

    19.5 °C
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