Sullivan Bay Weather Forecast

    • 10
    • 15

    Partly cloudy

    • 8
    • 15

    Partly cloudy

    • 5
    • 18

    Partly cloudy

    • 12
    • 21

    Shower

    • 12
    • 18

    Shower

    • 10
    • 14

    Shower

    • 9
    • 14

    Cloudy

Today 10 Sep Mornington Peninsula

Mostly clear. Winds southwesterly 15 to 20 km/h becoming light in the evening.

Port Phillip Local Waters

Wind
South to southwesterly about 10 knots.
Seas
Below 1 metre.
Weather
Clear.
Weather Situation
A strong high pressure system to the west is extending a ridge across Victoria. The high will cross Bass Strait on Friday, with winds tending warmer northerly on Saturday as the high moves over the Tasman Sea. 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 on Monday.
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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

    12.6 °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

    19.7 °C
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