Island Arch Weather Forecast

    • 7
    • 12

    Windy

    • 6
    • 13

    Windy

    • 9
    • 14

    Shower

    • 7
    • 14

    Shower

    • 6
    • 15

    Shower

    • 7
    • 13

    Shower

    • 5
    • 18

    Shower

Today 29 Aug South West

Cloudy. Very high chance of showers. Snow falling above 700 metres. The chance of a thunderstorm later this evening. Possible small hail. Damaging winds possible. Winds westerly 35 to 50 km/h turning southwesterly 40 to 60 km/h in the evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
West to southwesterly 30 to 35 knots turning southerly 35 to 45 knots in the evening.
Seas
2.5 to 4 metres.
1st Swell
Westerly 2.5 to 3 metres, tending southwesterly 4 to 6 metres by early evening.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm later this evening. Possible small hail.
Weather Situation
A vigorous cold front and trough continue to cross Victoria this evening into tomorrow. A high pressure system will develop over the Bight late Saturday and early Sunday and will extend a ridge over Victoria early next week. The high will move eastwards to be centred over eastern Victoria late Tuesday or early Wednesday, as a weak cold front moves across Bass Strait.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Island Arch Temperature Statistics View More

August Temperature

Cape Otway (44km)

  • Lowest 20 August, 2025

    4 °C

  • Average August

    11.4 °C

  • Highest 21 August, 2025

    19.6 °C

Climate (2020–Present)

Cape Otway (44km)

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  • Average Low 2020–2025

    11.7 °C

  • Average 2020–2025

    14.2 °C

  • Average High 2020–2025

    17.4 °C
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