Parramatta River - Margaret Street Boat Ramp Weather Forecast

    • 21
    • 34

    Possible shower or storm

    • 24
    • 32

    Shower or two

    • 20
    • 31

    Possible shower

    • 18
    • 29

    Partly cloudy

    • 19
    • 26

    Shower or two

    • 17
    • 25

    Partly cloudy

    • 17
    • 25

    Partly cloudy

Today 21 Dec Sydney

Partly cloudy. Medium chance of showers during this afternoon and evening. The chance of a thunderstorm during this 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
Mostly sunny. The chance of a thunderstorm during this 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.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Parramatta River - Margaret Street Boat Ramp Temperature Statistics View More

December Temperature

Sydney (Observatory Hill) (3km)

  • 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) (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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