Thirroul Beach is one kilometre in length and faces east, so it picks up swell from most directions. There's little wind protection at either end, although big southerly swells or southerly winds get slowed up somewhat by the Sandon Point headland.
Thirroul Beach is patrolled September to April and there is a saltwater pool that's great for a swim.
Thirroul Beach is a timeshare dog zone. Time-sharing zone allows access on the beach on leash at certain times dependant on the season. However, McCauley's Beach is located directly to the south and an off-leash dog-friendly beach.
https://www.visitnsw.com/destinations/south-coast/wollongong-and-surrounds/thirroul/attractions/thirroul-beach