Descartes Bay Weather Forecast

    • 11
    • 17

    Showers increasing

    • 9
    • 14

    Shower or two

    • 9
    • 13

    Cloudy

    • 8
    • 14

    Cloudy

    • 6
    • 20

    Sunny

    • 12
    • 24

    Sunny

    • 12
    • 17

    Shower or two

Today 14 Sep South West

Cloudy. High chance of showers, most likely in the evening. Winds northwesterly 15 to 20 km/h becoming light before dawn then becoming westerly 15 to 25 km/h in the morning. Overnight temperatures falling to around 10 with daytime temperatures reaching around 17.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly 15 to 20 knots, reaching up to 25 knots offshore in the evening.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres around midday.
1st Swell
Southwesterly 1.5 to 2 metres, tending westerly 2 to 2.5 metres later in the evening.
Weather
Cloudy. 90% chance of showers.
Weather Situation
A high pressure system currently lies over the Tasman Sea. A cold front will approach southwestern Victoria tonight, crossing the State early Tuesday. A strong high pressure ridge pushes into western Victoria in its wake. The high pressure centre will cross Victoria during Thursday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Descartes Bay Temperature Statistics View More

September Temperature

Portland Airport (7km)

  • Lowest 8 September, 2026

    2.1 °C

  • Average September

    11.7 °C

  • Highest 12 September, 2026

    21.9 °C

Climate (2021–2026)

Portland Airport (7km)

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  • Average Low 2021–2026

    9.7 °C

  • Average 2021–2026

    13.5 °C

  • Average High 2021–2026

    18.2 °C
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