Mosman Bay Weather Forecast

    • 14
    • 19

    Showers increasing

    • 15
    • 22

    Showers

    • 16
    • 24

    Cloud clearing

    • 15
    • 25

    Sunny

    • 16
    • 27

    Mostly sunny

    • 16
    • 21

    Cloudy

    • 13
    • 23

    Partly cloudy

Today 22 Sep Sydney

Cloudy. Very high chance of showers, most likely during this afternoon and evening. Winds southerly 15 to 20 km/h turning southeasterly 15 to 25 km/h in the morning.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
South to southeasterly 10 to 15 knots turning easterly in the evening.
Seas
Below 0.5 metres.
Weather
Cloudy. 90% chance of showers.
Weather Situation
A fresh and gusty southerly change has moved over the Sydney Waters. Winds are forecast to turn northeasterly by Wednesday as a high pressure system slips south and enter the Tasman Sea by mid-week, turning the winds northeasterly.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mosman Bay Temperature Statistics View More

September Temperature

Sydney (Observatory Hill) (3km)

  • Lowest 18 September, 2026

    9.4 °C

  • Average September

    17.9 °C

  • Highest 5 September, 2026

    32.1 °C

Climate (2021–2026)

Sydney (Observatory Hill) (3km)

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  • Average Low 2021–2026

    14.9 °C

  • Average 2021–2026

    18.5 °C

  • Average High 2021–2026

    23.6 °C
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