Cruising Yacht Club of Australia Weather Forecast

    • 21
    • 36

    Partly cloudy

    • 24
    • 31

    Shower or two

    • 20
    • 30

    Possible shower

    • 19
    • 29

    Partly cloudy

    • 19
    • 25

    Shower or two

    • 16
    • 24

    Partly cloudy

    • 16
    • 25

    Mostly sunny

Today 21 Dec Sydney

Partly cloudy. Medium chance of showers, most likely in the evening. The chance of a thunderstorm in the afternoon and early evening. Winds northwest to northeasterly 15 to 25 km/h tending southeast to southwesterly 15 to 20 km/h in the evening then becoming light in the late evening.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
East to northeasterly 15 to 20 knots shifting west to southwesterly 10 to 15 knots in the evening then becoming variable below 10 knots in the late evening.
Seas
Below 0.5 metres.
Weather
Partly cloudy. The chance of a thunderstorm in the afternoon and early evening.
Weather Situation
A high in the Tasman Sea is directing northerly winds over Sydney local waters. A cold front will bring a fresh south to southeasterly change on Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cruising Yacht Club of Australia Temperature Statistics View More

December Temperature

Sydney (Observatory Hill) (2km)

  • Lowest 2 December, 2025

    13.3 °C

  • Average December

    22.6 °C

  • Highest 19 December, 2025

    42.2 °C

Climate (2020–Present)

Sydney (Observatory Hill) (2km)

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  • Average Low 2020–2025

    14.7 °C

  • Average 2020–2025

    18.3 °C

  • Average High 2020–2025

    23.4 °C
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