Oyster Bay Weather Forecast

    • 22
    • 33

    Possible storm

    • 24
    • 29

    Possible shower

    • 20
    • 28

    Becoming windy. Partly cloudy

    • 19
    • 27

    Partly cloudy

    • 19
    • 23

    Shower or two

    • 18
    • 23

    Partly cloudy

    • 17
    • 23

    Partly cloudy

Today 21 Dec Sydney

Sunny morning. Slight chance of a shower in the afternoon and evening. The chance of a thunderstorm in the afternoon and early evening. Light winds becoming northwest to northeasterly 15 to 25 km/h in the middle of the day then tending south to southwesterly 15 to 20 km/h in the evening.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
Variable below 10 knots becoming north to northeasterly 10 to 15 knots in the middle of the day then tending east to northeasterly 15 to 20 knots in the early afternoon.
Seas
Below 0.5 metres.
Weather
Sunny morning. The chance of a thunderstorm in the afternoon and early evening.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Oyster Bay Temperature Statistics View More

December Temperature

Sydney Airport (10km)

  • Lowest 2 December, 2025

    13.4 °C

  • Average December

    23.1 °C

  • Highest 19 December, 2025

    42.6 °C

Climate (2020–Present)

Sydney Airport (10km)

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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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