Sylvania Waters Weather Forecast

    • 19
    • 29

    Windy. Partly cloudy

    • 19
    • 20

    Possible shower

    • 18
    • 20

    Cloudy

    • 19
    • 24

    Partly cloudy

    • 19
    • 28

    Sunny

    • 21
    • 30

    Mostly sunny

    • 21
    • 29

    Shower or two

Today 14 Dec Sydney

Partly cloudy. Slight chance of a shower later tonight. Winds northwest to southwesterly 20 to 30 km/h tending southerly 35 to 55 km/h in the late evening.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
North to northeasterly 15 to 20 knots then tending southerly 20 to 30 knots in the late evening.
Seas
Below 0.5 metres.
Weather
Partly cloudy.
Weather Situation
A trough and gusty wind change will cross the Sydney waters on Sunday evening. A ridge will extend over the Sydney waters on Monday. 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

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Sylvania Waters Temperature Statistics View More

December Temperature

Sydney Airport (9km)

  • Lowest 2 December, 2025

    13.4 °C

  • Average December

    22.5 °C

  • Highest 6 December, 2025

    39.2 °C

Climate (2020–Present)

Sydney Airport (9km)

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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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