AN expected big swell on the Tweed coast and southern Gold Coast on Wednesday is good news for surfers but it could batter beaches.
According to the Bureau of Meteorology, the southerly swell on the Tweed coast and southern Gold Coast is expected to start at 2-4m on Wednesday before rising to 5m during the evening and Thursday morning.
The swell coincides with high tides with a 1.9m tide predicted for beaches around Coolangatta on Wednesday night about 9pm.
Gold Coast City Council planned to have crews on standby when the large swell and high tides coincide to minimise and danger and damage to low-lying areas and beaches.
Engineering Services Committee chairman Councillor Daphne McDonald said early June each year meant large seasonal tides.
"So-called 'king tides' occur around this time each year and combined with large swell, this can see some low-lying areas affected by minor flooding and erosion across beaches," Cr McDonald said.
"I urge all residents and visitors considering going to the beach to follow the direction of our lifeguards if conditions are poor. And please, stay right away from any beach scarping.
"Our maintenance crews will be on stand-by should they be required and remedial beach works will be undertaken as soon as conditions allow."
The Gold Coast council also warned boat owners to secure moorings before Wednesday night.
A Tweed Shire Council spokesman said the natural resources management section was monitoring the situation and was aware of the conditions on Wednesday.
"It's all sort of up in the air," he said.
"In the last three or four months there has been a build-up of sand (at Kingscliff), and we just have to wait and see if this swell takes sand away or builds up more."