Thirroul Beach Weather Forecast
- 10
- 18
Partly cloudy
- 11
- 22
Sunny
- 17
- 27
Sunny
- 16
- 29
Sunny
- 18
- 24
Shower or two
- 15
- 17
Shower or two
- 15
- 20
Shower or two
Today 17 Sep Wollongong
Partly cloudy. Winds southwesterly 20 to 30 km/h turning south to southeasterly 15 to 25 km/h in the middle of the day then becoming light in the late afternoon.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- South to southwesterly 15 to 25 knots, reaching up to 30 knots offshore north of Point Perpendicular early in the morning. Winds becoming variable about 10 knots in the late afternoon.
- Seas
- 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres around midday, then decreasing below 1 metre by early evening.
- 1st Swell
- Southerly 2 to 2.5 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A strong high over the Great Australian Bight is moving east in the wake of a trough in the Tasman Sea, directing strong and blustery southerly winds over the coastal waters. The winds will ease from the evening as the high moves across the state later in the week and into the weekend.
Thirroul Beach Temperature Statistics View More
September Temperature
Bellambi (5km)
Lowest 16 September, 2026
9.2 °CAverage September
17 °CHighest 5 September, 2026
30.7 °C
Climate (2021–2026)
Bellambi (5km)
Average Low 2021–2026
15.1 °CAverage 2021–2026
18 °CAverage High 2021–2026
21.8 °C