Fort Denison Weather Forecast

    • 16
    • 29

    Partly cloudy

    • 16
    • 24

    Sunny

    • 12
    • 22

    Partly cloudy

    • 12
    • 27

    Late shower or two

    • 16
    • 23

    Possible shower then sunny

    • 11
    • 22

    Mostly sunny

    • 11
    • 22

    Partly cloudy

Today 16 Sep Sydney

Partly cloudy. Winds north to northwesterly 20 to 30 km/h becoming light in the late evening.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
North to northwesterly 10 to 15 knots.
Seas
Below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
Northerly winds are strengthening as a high pressure system over the Tasman Sea moves further away while a cold front approaches from the west. This front and its associated trough will bring a west to southwesterly change to southern and central coastal waters later today through Wednesday, before the front moves away to the Tasman Sea and the trough weakens over the northern coastal waters. Then, a ridge of high pressure will drift across the coastal waters midweek ahead of the second cold front that looks set to cross the coast on Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Fort Denison Temperature Statistics View More

September Temperature

Sydney (Observatory Hill) (2km)

  • Lowest 1 September, 2025

    9.3 °C

  • Average September

    16.4 °C

  • Highest 8 September, 2025

    29 °C

Climate (2020–Present)

Sydney (Observatory Hill) (2km)

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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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