Merri Island Weather Forecast

    • 10
    • 21

    Mostly clear

    • 11
    • 19

    Showers increasing. Windy

    • 10
    • 17

    Cloudy

    • 10
    • 22

    Shower or two

    • 12
    • 19

    Possible early shower

    • 9
    • 19

    Partly cloudy

    • 9
    • 19

    Partly cloudy

Today 5 Dec Warrnambool

Mostly clear. Winds southerly 15 to 20 km/h tending southwesterly in the late afternoon then becoming light in the late evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly 10 to 15 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 3 metres.
Weather
Partly cloudy.
Weather Situation
A trough over will linger over the northeast before moving over the Tasman Sea on Saturday. A cold front moves over the south of the State on Saturday. A ridge of high pressure then builds over the state during Sunday, lingering on Monday, before another cold front clips the south on Monday. A new ridge moves over the State on Tuesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Merri Island Temperature Statistics View More

December Temperature

Warrnambool Airport (12km)

  • Lowest 3 December, 2025

    5.7 °C

  • Average December

    16 °C

  • Highest 3 December, 2025

    27.6 °C

Climate (2020–Present)

Warrnambool Airport (12km)

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  • Average Low 2020–2025

    8.8 °C

  • Average 2020–2025

    13.4 °C

  • Average High 2020–2025

    19 °C
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