Parramatta River - Balmain Marina Weather Forecast

    • 22
    • 36

    Mostly sunny

    • 21
    • 30

    Possible shower

    • 21
    • 34

    Possible shower or storm

    • 24
    • 30

    Shower or two

    • 20
    • 29

    Shower or two

    • 19
    • 30

    Possible shower

    • 19
    • 25

    Shower or two

Today 19 Dec Sydney

Sunny morning. Slight chance of a shower in the afternoon and evening. The chance of a thunderstorm in the afternoon and evening. Light winds becoming southeast to southwesterly 15 to 20 km/h in the middle of the day.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
Variable about 10 knots becoming southerly 10 to 15 knots in the late evening.
Seas
Below 0.5 metres.
Weather
Sunny morning. The chance of a thunderstorm in the afternoon and early evening.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Parramatta River - Balmain Marina Temperature Statistics View More

December Temperature

Sydney (Observatory Hill) (3km)

  • Lowest 2 December, 2025

    13.3 °C

  • Average December

    22 °C

  • Highest 5 December, 2025

    37.8 °C

Climate (2020–Present)

Sydney (Observatory Hill) (3km)

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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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