Undertow Bay Weather Forecast

    • 10
    • 14

    Showers

    • 7
    • 15

    Partly cloudy

    • 5
    • 18

    Mostly sunny

    • 8
    • 23

    Partly cloudy

    • 13
    • 23

    Shower or two

    • 13
    • 23

    Showers increasing

    • 11
    • 17

    Showers easing

Today 26 Sep Wonthaggi

Cloudy. Very high chance of showers, most likely in the morning and afternoon. The chance of a thunderstorm in the morning. Light winds becoming southwesterly 15 to 20 km/h in the morning then tending southerly 15 to 25 km/h in the middle of the day.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Southwesterly 10 to 15 knots turning southerly 15 to 20 knots during the morning. Winds reaching up to 25 knots offshore during the afternoon and evening.
Seas
Around 1 metre, increasing to 1 to 2 metres around midday.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
Weather
Cloudy. 70% chance of showers. The chance of a thunderstorm in the morning.
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  • Temperature Forecast Bureau of Meteorology

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Undertow Bay Temperature Statistics View More

September Temperature

Wonthaggi (7km)

  • Lowest 22 September, 2026

    3.1 °C

  • Average September

    12.4 °C

  • Highest 20 September, 2026

    27.1 °C

Climate (2021–2026)

Wonthaggi (7km)

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  • Average Low 2021–2026

    10.2 °C

  • Average 2021–2026

    12.9 °C

  • Average High 2021–2026

    20 °C
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