Mansion Bay Weather Forecast

    • 16
    • 33

    Windy. Mostly sunny

    • 15
    • 22

    Sunny

    • 14
    • 20

    Shower or two

    • 14
    • 18

    Partly cloudy

    • 12
    • 18

    Shower or two. Becoming windy

    • 13
    • 17

    Partly cloudy

    • 11
    • 19

    Sunny

Today 5 Sep Sydney

Becoming partly cloudy. Slight chance of a shower, most likely in the late afternoon and evening. Winds northerly 25 to 40 km/h tending northwesterly 35 to 50 km/h in the middle of the day then tending westerly 15 to 25 km/h in the late evening.

Extreme Fire Danger Rating

Take action now to protect life and property

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Northerly 15 to 25 knots turning west to northwesterly 15 to 20 knots during the afternoon and evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres around midday.
1st Swell
Southerly around 1 metre.
Weather
Mostly sunny day. The chance of a thunderstorm offshore in the evening.
Weather Situation
North to northwesterly winds over Coastal Waters ahead of a vigorous cold front crossing the waters late today into Sunday. Winds turning westerly in behind the front before tending southwesterly to southerly as a high pressure ridge begins to form over the NSW coast. The ridge will persist into the new week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mansion Bay Temperature Statistics View More

September Temperature

Sydney Airport (15km)

  • Lowest 1 September, 2026

    11.5 °C

  • Average September

    20.2 °C

  • Highest 2 September, 2026

    28.9 °C

Climate (2021–2026)

Sydney Airport (15km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    14.9 °C

  • Average 2021–2026

    18.8 °C

  • Average High 2021–2026

    23.5 °C
Get WillyWeather+ to remove ads