Lake Illawarra is a large coastal lake located in the Illawarra region of New South Wales, approximately 90 kilometres south of Sydney, near the city of Wollongong and the suburb of Shellharbour. The lake covers approximately 36 square kilometres, making it one of the more substantial paddling destinations on the NSW South Coast. The name "Warra" in the local Aboriginal language translates to "pleasant place near the sea," reflecting the lake's coastal character. In 2007, the lake was permanently opened to the ocean via the construction of training walls at its entrance, which improved water quality but also introduced tidal currents that paddlers need to account for.

The most popular access point is on the south-east side of Windang Bridge at Reddall Parade, where paddlers will find parking, sandy shores, and a nearby kiosk. Additional launch options include the Windang Boat Ramp on the northern side of Windang Bridge (a two-lane concrete ramp with fish cleaning tables and parking), and the Reddall Reserve boat ramp opposite Ocean Street. Woolamai Point Jetty and Tuggerah Bay Jetty are also used as launch points, particularly for those who want to hug the western shoreline and explore Hooka Creek, Mullet Creek, and around Gooseberry Island.

The lake is open to all watercraft, including water skiers and sailboarders, so paddlers should be aware of motorised vessel traffic. A 4-knot speed limit applies in Windang Channel and Berkeley Harbour. The lake entrance presents a specific hazard: tidal currents through the channel can be strong, and beginners are advised to exercise caution near the rock walls to avoid being swept beyond them. The recommended paddling window is at least one hour after high tide, when currents subside.

For those seeking more advanced experiences, downwind paddling across the lake is possible in suitable wind conditions, though this requires planning, knowledge of entry and exit points, water depth, and ideally a companion with a GPS tracker. The lake entrance also produces SUP surfing waves during a decent easterly swell as the tide runs out.

The foreshore at Reddall Reserve includes BBQ facilities, picnic shelters, and playgrounds. The Lake Illawarra Art Trail, commencing at Reddall Reserve, features sculptures relating to the lake's history and the local community.