Gannons Bay Weather Forecast
- 19
- 22
Clear
- 18
- 25
Sunny
- 20
- 31
Sunny
- 21
- 25
Partly cloudy
- 20
- 25
Mostly sunny
- 20
- 27
Sunny
- 21
- 27
Partly cloudy
Today 23 Jan Sydney
Clear. Winds easterly 15 to 20 km/h becoming light in the evening.
Sydney Coastal Waters
Broken Bay to Port Hacking- Wind
- East to southeasterly about 10 knots.
- Seas
- Below 1 metre.
- 1st Swell
- Southerly 2 to 2.5 metres.
- Weather
- Mostly clear.
- Weather Situation
- A high pressure system over the southern Tasman Sea is extending a ridge along the NSW coast. Winds gradually turn northerly as the high pressure system drifts east during the weekend. A cold front is forecast to brush along the south coast on Sunday, bringing a southerly change to coastal waters. Northeasterly winds forecast to redevelop next week as the next ridge settled over the coastal waters.
Gannons Bay Temperature Statistics View More
January Temperature
Sydney Airport (14km)
Lowest 2 January, 2026
17.2 °CAverage January
22.8 °CHighest 10 January, 2026
42.7 °C
Climate (2021–Present)
Sydney Airport (14km)
Average Low 2021–2026
14.8 °CAverage 2021–2026
18.7 °CAverage High 2021–2026
23.4 °C