The temporary closure was recently issued due to the combination of high tides, strong winds and large waves from the latest heavy weather.

National Parks and Wildlife Service (NPWS) Hunter Region Manager, Robert Quirk, said high tides and large waves had caused severe erosion in places along the Myall Lakes National Park coast.

"Wave action eroded away the beach and foredune sand leaving steep ledges and areas of very soft sand,'' said Mr Quirk.

"The beach was inaccessible and unsafe for vehicle access between the Mungo Beach access track and Big Gibber until the tides naturally replenished sand onto the beach," he said.

Mr Quirk advised that beach-driving conditions had since improved, and the Mungo to Big Gibber section was re-opened last Wednesday when it became safe to drive again.

"Tides have been lower and southerly swells have dropped, which has improved beach driving conditions and enabled safe vehicle access to the beach.

"However people should continue to drive according to beach conditions and exercise care when driving on the beaches, including travelling at low tide where possible," said Mr Quirk.

"People should also remember that public road rules still apply to beach driving, and a speed limit of 40km/h applies," he added.

Mr Quirk said beach driving from the Mungo access track south to Dark Point remains closed, as per the Myall Lakes National Park Plan of Management.

"People should also remember that driving on the dunes, headland or on any vegetated area on the beaches is not permitted, and anyone found driving in these areas will be issued an on the spot fine," he said.

"NPWS officers will continue to monitor the beaches closely," concluded Mr Quirk.

People requiring further information about access to beaches in Myall Lakes National Park should contact the NPWS Great Lakes Area office on (02) 65910300.