Merri Island Weather Forecast

    • 4
    • 21

    Mostly sunny

    • 12
    • 22

    Sunny

    • 12
    • 23

    Late shower or two. Windy

    • 9
    • 14

    Partly cloudy

    • 5
    • 16

    Mostly sunny

    • 6
    • 19

    Partly cloudy

    • 9
    • 20

    Shower or two

Today 18 Sep Warrnambool

Mostly sunny. Winds northerly 15 to 20 km/h tending northwesterly 20 to 30 km/h in the morning.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Northwesterly 15 to 25 knots, reaching up to 30 knots offshore during the afternoon and evening.
Seas
1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
1st Swell
Southwesterly 3 metres.
Weather
Mostly sunny.
Weather Situation
A strong high pressure system centred over western Victoria will move slowly over NSW before a cold front crosses the State on Sunday. A new high pressure system will approach the State following the cold front.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Merri Island Temperature Statistics View More

September Temperature

Warrnambool Airport (12km)

  • Lowest 8 September, 2026

    1 °C

  • Average September

    11 °C

  • Highest 13 September, 2026

    22.5 °C

Climate (2021–2026)

Warrnambool Airport (12km)

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  • Average Low 2021–2026

    8.8 °C

  • Average 2021–2026

    13.5 °C

  • Average High 2021–2026

    19.2 °C
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