Mosman Bay Marina Weather Forecast

    • 17
    • 25

    Sunny

    • 11
    • 21

    Sunny

    • 12
    • 25

    Late shower or two

    • 17
    • 22

    Possible early shower

    • 11
    • 23

    Mostly sunny

    • 11
    • 23

    Mostly sunny

    • 11
    • 21

    Partly cloudy

Today 17 Sep Sydney

Sunny. Light winds becoming west to southwesterly 15 to 25 km/h in the morning.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
Variable below 10 knots becoming south to southeasterly 10 to 15 knots in the early afternoon then turning southwesterly below 10 knots in the evening.
Seas
Below 0.5 metres.
Weather
Sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mosman Bay Marina Temperature Statistics View More

September Temperature

Sydney (Observatory Hill) (3km)

  • Lowest 1 September, 2025

    9.3 °C

  • Average September

    16.9 °C

  • Highest 8 September, 2025

    29 °C

Climate (2020–Present)

Sydney (Observatory Hill) (3km)

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  • Average Low 2020–2025

    14.7 °C

  • Average 2020–2025

    18.2 °C

  • Average High 2020–2025

    23.4 °C
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