Mort Bay Weather Forecast
- 6
- 19
Sunny
- 7
- 18
Sunny
- 7
- 18
Sunny
- 7
- 19
Mostly sunny
- 11
- 21
Showers increasing
- 11
- 19
Partly cloudy
- 9
- 21
Sunny
Today 5 Aug Sydney
Mostly sunny. Areas of morning frost. Winds westerly 15 to 20 km/h becoming light in the evening.
Sydney Enclosed Waters
Sydney Harbour, Pittwater and Botany Bay- Wind
- Westerly about 10 knots increasing to 10 to 15 knots in the morning then decreasing to about 10 knots in the early afternoon.
- Seas
- Below 0.5 metres.
- Weather
- Sunny.
- Weather Situation
- A low pressure system near Tasmania is slowly moving eastwards, maintaining moderate to fresh westerly winds over Sydney Waters. Winds will 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. Winds will then turn northerly and strengthen through the weekend ahead of a strong cold front that will cross Sydney Waters early next week.
Mort Bay Temperature Statistics View More
August Temperature
Sydney (Observatory Hill) (1km)
Lowest 4 August, 2026
8.1 °CAverage August
12.7 °CHighest 3 August, 2026
22.2 °C
Climate (2021–2026)
Sydney (Observatory Hill) (1km)
Average Low 2021–2026
14.9 °CAverage 2021–2026
18.4 °CAverage High 2021–2026
23.6 °C