Treachery Beach Weather Forecast
- 13
- 28
Clear
- 14
- 32
Shower
- 14
- 20
Shower
- 15
- 22
Shower
- 15
- 23
Partly cloudy
- 14
- 24
Sunny
- 13
- 27
Partly cloudy
Today 20 Sep Mid North Coast
Clear. The chance of smoke haze in the north. Winds northeast to southeasterly 15 to 20 km/h tending west to northwesterly in the late afternoon then becoming light in the late evening.
Hunter Coastal Waters
Seal Rocks to Broken Bay- Wind
- Northeasterly 10 to 15 knots turning northwesterly in the evening. Winds reaching up to 20 knots offshore south of Norah Head in the evening.
- Seas
- Around 1 metre.
- 1st Swell
- Southerly 1.5 metres.
- Weather
- Clear.
- Weather Situation
- A high pressure system over the Tasman Sea today directs a northwesterly flow over the state, ahead of a fresh and gusty southerly change moving across the the coastal waters on Monday, reaching the QLD border by Tuesday. A second high pressure system is forecast to slip south and enter the Tasman Sea by mid-week, turning the winds east to northeasterly.
Treachery Beach Temperature Statistics View More
September Temperature
Taree Airport (62km)
Lowest 19 September, 2026
5.1 °CAverage September
16.5 °CHighest 5 September, 2026
33.2 °C
Climate (2021–2026)
Taree Airport (62km)
Average Low 2021–2026
13.2 °CAverage 2021–2026
18.2 °CAverage High 2021–2026
24.3 °C