Descartes Bay Weather Forecast

    • 16
    • 25

    Cloudy

    • 13
    • 19

    Cloudy

    • 11
    • 18

    Showers

    • 11
    • 19

    Shower or two

    • 11
    • 18

    Shower or two

    • 12
    • 19

    Possible shower

    • 11
    • 18

    Cloudy

Today 19 Dec South West

Partly cloudy. Slight chance of a shower. The chance of a thunderstorm in the late afternoon and evening. Winds northwest to northeasterly 15 to 20 km/h tending northwest to southwesterly 20 to 30 km/h in the middle of the day then becoming southwesterly 15 to 25 km/h in the evening. Daytime maximum temperatures 28 to 36.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Westerly about 10 knots increasing to 10 to 15 knots in the early afternoon. Winds reaching up to 20 knots in the west in the evening.
Seas
Below 0.5 metres, increasing to around 1 metre during the afternoon.
1st Swell
Southwesterly 1.5 metres, increasing to 1.5 to 2 metres around midday.
Weather
Partly cloudy. The chance of a thunderstorm in the afternoon and evening.
Weather Situation
A broad area of low pressure to the west of Victoria is expected to slowly move eastwards across the state during today and Saturday. Another, more intense, low pressure system and associated cold front are forecast to move across Victoria on Sunday, before a developing ridge of high pressure brings a southwesterly flow over the state during Monday
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Descartes Bay Temperature Statistics View More

December Temperature

Portland Airport (7km)

  • Lowest 5 December, 2025

    6.9 °C

  • Average December

    15 °C

  • Highest 17 December, 2025

    30.1 °C

Climate (2020–Present)

Portland Airport (7km)

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  • Average Low 2020–2025

    9.6 °C

  • Average 2020–2025

    13.4 °C

  • Average High 2020–2025

    18.1 °C
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