Sunnyside Beach Weather Forecast

    • 7
    • 17

    Showers

    • 11
    • 18

    Showers. Possible afternoon storm

    • 9
    • 16

    Shower or two

    • 9
    • 15

    Morning shower or two

    • 7
    • 15

    Possible shower

    • 8
    • 14

    Partly cloudy

    • 7
    • 15

    Partly cloudy

Today 4 Sep Mornington Peninsula

Cloudy. Very high chance of showers, most likely later this evening. Winds northwesterly 15 to 20 km/h turning northerly 25 to 40 km/h in the evening.

Port Phillip Local Waters

Wind
Northerly 15 to 20 knots.
Seas
Around 1 metre.
Weather
Cloudy. 90% chance of showers.
Weather Situation
Northerly winds will strengthen tonight as a cold front approaches from the west. The front is forecast to cross Victoria on Saturday, with a vigorous westerly airstream developing as an associated low pressure system crosses Tasmania. Winds will ease on Sunday as a high pressure ridge extends over Victoria and persists into early next week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sunnyside Beach Temperature Statistics View More

September Temperature

Cerberus (20km)

  • Lowest 1 September, 2026

    4.9 °C

  • Average September

    13.3 °C

  • Highest 2 September, 2026

    16 °C

Climate (2021–2026)

Cerberus (20km)

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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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