Sullivan Bay Weather Forecast

    • 14
    • 20

    Shower

    • 11
    • 15

    Rain

    • 9
    • 15

    Partly cloudy

    • 8
    • 17

    Partly cloudy

    • 10
    • 21

    Partly cloudy

    • 14
    • 21

    Shower

    • 13
    • 21

    Shower

Today 25 Sep Mornington Peninsula

Cloudy. High chance of showers, most likely in the late afternoon and evening. The chance of a thunderstorm in the afternoon and evening. Winds northerly 15 to 25 km/h becoming light in the early morning then becoming southerly 15 to 20 km/h in the early afternoon.

Port Phillip Local Waters

Wind
Northerly 10 to 15 knots becoming variable below 10 knots in the early morning then becoming southerly 10 to 15 knots in the early afternoon.
Seas
Below 1 metre.
Weather
Cloudy. 70% chance of showers. The chance of a thunderstorm in the afternoon and evening.
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Sullivan Bay Temperature Statistics View More

September Temperature

Cerberus (36km)

  • Lowest 23 September, 2026

    1.8 °C

  • Average September

    12.9 °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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