Sunnyside Beach Weather Forecast

    • 11
    • 27

    Clear

    • 11
    • 31

    Sunny

    • 14
    • 28

    Partly cloudy

    • 11
    • 20

    Partly cloudy

    • 11
    • 24

    Sunny

    • 12
    • 29

    Mostly sunny

    • 14
    • 31

    Mostly sunny

Today 28 Dec Mornington Peninsula

Clear. Winds easterly 15 to 25 km/h.

Port Phillip Local Waters

Wind
East to southeasterly 10 to 15 knots.
Seas
Below 1 metre.
Weather
Clear.
Weather Situation
A high pressure system over the Tasman Sea is extending a ridge over Victoria. A trough will slowly cross from the west during Tuesday, and linger about the northeast on Wednesday as a high pressure system south of the Bight extends a ridge over Tasmania. On Thursday, Victoria will lie between a ridge over Tasmania and a trough in central NSW.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sunnyside Beach Temperature Statistics View More

December Temperature

Cerberus (20km)

  • Lowest 3 December, 2025

    6 °C

  • Average December

    15.9 °C

  • Highest 18 December, 2025

    35.8 °C

Climate (2020–Present)

Cerberus (20km)

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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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