A man has drowned at a NSW beach, as police urge residents and visitors to take care in the water amid predictions that warmer temperatures will continue throughout the weekend.

Emergency services were called to Cudmirrah Beach, about 200 kilometres south of Sydney, just after midday on Saturday.

It is believed the man was receiving CPR when ambulance staff arrived at the beach, and that a rescue helicopter also attended.

“Despite the efforts of NSW Ambulance paramedics, the man died at the scene,” NSW Police said in a statement. The age of the man was not yet known.

The death comes as the Bureau of Meteorology predicted low-intensity heatwave conditions across much of NSW on Saturday and Sunday.

The state’s deputy commissioner of emergency management Peter Thurtell said while he advised people to avoid the sun during the hottest part of the day, large crowds were still expected to make their way to beaches, rivers, lakes and swimming pools across the state.

“Every year, thousands of people are rescued from the surf and many needlessly drown, so I implore everyone to only swim at patrolled beaches and listen to the directions and advice of surf lifesavers,” he said. “For all other waterways, special care should be taken when swimming as submerged items may pose elevated or unexpected risks.”

Thurtell said the heat made it especially important for people to look after their own health, and that of those around them.

“While warmer weather may not concern some people, the heat can be especially dangerous for more vulnerable members of the community, including babies and children, older people, or those living with an illness,” he said. “If you know someone who may need assistance – particularly if they live alone or are socially isolated – check-in on them this weekend and make sure they are doing okay and have what they need.”