Georges River - Sylvania Marina Weather Forecast

    • 19
    • 21

    Cloudy

    • 18
    • 21

    Cloudy

    • 19
    • 23

    Partly cloudy

    • 19
    • 28

    Sunny

    • 21
    • 31

    Possible shower developing

    • 22
    • 30

    Shower or two

    • 21
    • 31

    Shower or two

Today 15 Dec Sydney

Cloudy. Medium chance of showers, most likely this evening. Winds southerly 15 to 25 km/h tending southeasterly 20 to 30 km/h in the morning.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
Southerly 15 to 20 knots tending southeasterly 10 to 15 knots in the morning.
Seas
Below 0.5 metres.
Weather
Cloudy.
Weather Situation
A ridge will extend over the Sydney waters today. The ridge will be maintained by a high in the Great Australian Bight that will move east across southeast Australia on Tuesday and into the Tasman Sea on Wednesday, lingering for a day or two.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Georges River - Sylvania Marina Temperature Statistics View More

December Temperature

Sydney Airport (8km)

  • Lowest 2 December, 2025

    13.4 °C

  • Average December

    22.5 °C

  • Highest 6 December, 2025

    39.2 °C

Climate (2020–Present)

Sydney Airport (8km)

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  • Average Low 2020–2025

    14.8 °C

  • Average 2020–2025

    18.6 °C

  • Average High 2020–2025

    23.3 °C
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