Groper Islet Weather Forecast
- 18
- 22
Clear
- 18
- 23
Sunny
- 19
- 21
Shower or two
- 19
- 21
Shower or two
- 18
- 20
Shower or two
- 18
- 20
Possible morning shower
- 18
- 21
Sunny
Today 20 Sep Coffs Harbour
Clear. Light winds.
Coffs Coastal Waters
Wooli to Smoky Cape- Wind
- North to northwesterly about 10 knots, reaching up to 20 knots offshore.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres offshore.
- 1st Swell
- Southerly around 1 metre inshore, increasing to 1.5 metres offshore south of Coffs Harbour.
- 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.
Groper Islet Temperature Statistics View More
September Temperature
Grafton Airport (48km)
Lowest 19 September, 2026
5.3 °CAverage September
16.6 °CHighest 3 September, 2026
33.1 °C
Climate (2021–2026)
Grafton Airport (48km)
Average Low 2021–2026
13.3 °CAverage 2021–2026
18.8 °CAverage High 2021–2026
26.2 °C