Surf Life Saving Australia has revealed rock fishing is now NSW's leading cause of coastal drowning, with 27 per cent of drownings in the 2013-14 period attributed to the activity.

Surf Life Saving's National Coastal Safety Report reveals eight deaths came from rock fishing in NSW, and 12 deaths nationally.

There have been two rock fishing-related deaths in the Illawarra in recent months. A 65-year-old man was swept out to sea while fishing near the Kiama Blowhole in August and a 48-year-old woman drowned at Killalea while fishing with her husband in October.

Director of Surf Life Saving Illawarra, Anthony Turner, said rock fishers needed to consider several basic points that could keep them safer while casting their lines.

"Always wear a life jacket and non-slip footwear. Check the tides, swell and weather conditions before fishing, and always fish with a friend," Mr Turner said.

"Always spend some time watching the conditions before you start fishing, to see what the surf is doing."

He recommended rock fishers also carry a mobile phone, and never turn their backs on the sea.

"The big one is, if you're in doubt, don't go out."

Regional co-ordinator for Illawarra Marine Rescue, Bruce Mitchell, said the region's most dangerous rock fishing spots included Kiama Blowhole, Hill 60, and areas around Jervis Bay and the Royal National Park.

"I'd say, always wear a life jacket. These days, they don't get in the way," Mr Mitchell said.

"If there's a heavy surf warning, don't go near the rocks. Even after big seas, there will be a few big 'widow makers' that can take you out."

People should check the Beachsafe website (beachsafe.org.au) before going out.