Fort Denison Weather Forecast
- 10
- 23
Mostly clear
- 7
- 19
Sunny
- 7
- 19
Sunny
- 7
- 18
Sunny
- 7
- 19
Sunny
- 8
- 20
Mostly sunny
- 11
- 23
Shower or two
Today 3 Aug Sydney
Mostly clear. Slight chance of a shower. Light winds.
Sydney Enclosed Waters
Sydney Harbour, Pittwater and Botany Bay- Wind
- Northwesterly below 10 knots.
- Seas
- Below 0.5 metres.
- Weather
- Mostly clear. The chance of a thunderstorm in the late afternoon and evening.
- Weather Situation
- A low pressure system near Tasmania is slow-moving, with its associated cold front and trough crossing Sydney Waters today and bringing a westerly wind change in its wake. Winds will then gradually ease and become light and variable later in the week as the low heads to the Tasman Sea and weakens, while a high pressure system moves across the state.
Fort Denison Temperature Statistics View More
August Temperature
Sydney (Observatory Hill) (2km)
Lowest 1 August, 2026
8.3 °CAverage August
12 °CHighest 1 August, 2026
17.3 °C
Climate (2021–2026)
Sydney (Observatory Hill) (2km)
Average Low 2021–2026
14.9 °CAverage 2021–2026
18.4 °CAverage High 2021–2026
23.6 °C