A woman was rescued from the rocks at a North Shore beach as rising tides threatened to trap her.

Police said the woman was stuck on rocks at Castor Bay and had a lucky escape thanks to a charged mobile phone and the work of police officers.

Just after 1.30pm, police received a call from the woman trapped on rocks between Castor Bay Beach and Kennedy Park.

Waitematā East Area Response Manager, Senior Sergeant CJ Miles, said a unit arrived to her aid shortly after.

Miles said an officer scaled the rocks around the bay to find the woman.

“She was getting battered by waves and an incoming tide.

“Officers were able to provide some reassurance until the Auckland Police Maritime Unit arrived and threw her a lifejacket,” he said.

The constable jumped into the water to help the woman on to the Maritime Unit’s vessel.

Miles said the woman was taken back to Mechanic’s Bay for a medical assessment.

“This was a team effort and a great example of our resources and staff working together to achieve great outcomes.

“This rescue also highlights the importance of a working mobile phone, and to contact emergency services if you need help.

“If you get into trouble, please call 111 as soon as possible, as this will enable an emergency response at the earliest opportunity,” Miles said.