Merri Island Weather Forecast

    • 8
    • 15

    Shower or two

    • 9
    • 15

    Showers easing

    • 5
    • 16

    Cloudy

    • 9
    • 17

    Shower or two

    • 9
    • 14

    Shower or two

    • 8
    • 14

    Partly cloudy

    • 6
    • 17

    Possible shower

Today 21 Aug Warrnambool

Partly cloudy. High chance of showers. Winds westerly 20 to 30 km/h tending northwesterly 20 to 25 km/h in the evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly 20 to 25 knots, reaching up to 30 knots in the late evening.
Seas
2 metres.
1st Swell
Westerly 3 metres, increasing to 3 to 4 metres in the west.
Weather
Partly cloudy. 80% chance of showers.
Weather Situation
A ridge of high pressure over northern parts of the State will remain throughout the weekend as a couple of cold fronts pass well to the south in a broad westerly flow. The ridge will weaken and move over the Tasman Sea on Monday and a low pressure system and associated trough will approach from the west, moving to the north of the State on Tuesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Merri Island Temperature Statistics View More

August Temperature

Warrnambool Airport (12km)

  • Lowest 2 August, 2026

    1.4 °C

  • Average August

    10.4 °C

  • Highest 17 August, 2026

    18.2 °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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