Sullivan Bay Weather Forecast

    • 9
    • 22

    Windy

    • 15
    • 22

    Shower

    • 14
    • 20

    Rain

    • 10
    • 16

    Shower

    • 10
    • 16

    Shower

    • 9
    • 16

    Partly cloudy

    • 9
    • 17

    Cloudy

Today 29 Sep Mornington Peninsula

Mostly sunny. Winds northerly 25 to 40 km/h.

Port Phillip Local Waters

Wind
Northerly 20 to 30 knots.
Seas
Around 1 metre, increasing to 1 to 2 metres around midday.
Weather
Mostly sunny.
Weather Situation
A high pressure system is in the Tasman Sea while a low pressure trough crosses the Bight. The trough is forecast to move slowly east on Tuesday, entering western Victoria on Wednesday night before slowly crossing the rest of Victoria on Thursday. The trough is expected to linger over eastern Victoria on Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sullivan Bay Temperature Statistics View More

September Temperature

Cerberus (36km)

  • Lowest 23 September, 2026

    1.8 °C

  • Average September

    13.1 °C

  • Highest 20 September, 2026

    26.2 °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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