Thirroul Beach Weather Forecast
- 18
- 27
Showers increasing
- 12
- 19
Sunny
- 13
- 20
Sunny
- 13
- 21
Partly cloudy
- 15
- 20
Shower or two
- 14
- 20
Possible shower
- 14
- 21
Partly cloudy
Today 17 Apr Wollongong
Becoming cloudy. The chance of smoke haze. Very high chance of showers, most likely during this afternoon and evening. The chance of a thunderstorm during this afternoon and evening, possibly severe with damaging winds and large hail. Winds westerly 20 to 30 km/h turning south to southwesterly in the early afternoon.
Illawarra Coastal Waters
Port Hacking to Ulladulla- Wind
- Westerly 15 to 20 knots turning southerly 20 to 30 knots in the afternoon.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2.5 metres by early evening.
- 1st Swell
- Southerly around 1 metre, increasing to 2 to 3 metres during the afternoon.
- Weather
- Partly cloudy. 95% chance of showers during this afternoon and evening. The chance of a thunderstorm during this afternoon and evening, possibly severe with large hail.
- Weather Situation
- A high pressure system is extending a ridge over the northern waters while a cold front and its associated trough approach from south. A southerly change is forecast for Friday as the front moves north along the coast reaching the northern border early Saturday morning. In the wake of this, the high pressure moves east, reaching the southern Tasman Sea by Sunday and bringing settled weather. This system is then expected to become slow-moving for several days.
Thirroul Beach Temperature Statistics View More
April Temperature
Bellambi (5km)
Lowest 12 April, 2026
12.6 °CAverage April
19.9 °CHighest 10 April, 2026
30 °C
Climate (2021–Present)
Bellambi (5km)
Average Low 2021–2026
15.1 °CAverage 2021–2026
18.1 °CAverage High 2021–2026
21.9 °C