SES units across Port Stephens worked well in to the night on Sunday, with the vast majority of call outs involving flash flooding, water approaching or entering homes and minor home or road damage.

Tomaree SES Commander Maureen Philpott said that the Tomaree and Tilligerry peninsulas escaped with minor flooding and some road damage.

"We had 15 call outs from the Lemon Tree Passage area where heavy rain caused minor flooding of roads and homes. A couple of homes in Soldiers Point also received minor damage," she said.

Port Stephens SES Commander David Douglas said the majority of the 20-25 calls had come from the Medowie area.

"Most of the jobs involved stopping water from entering homes and repairing leaky roofs," he said.

The Williamtown weather station, located at the RAAF base, recorded 133mm of rainfall in the 24 hours to 9am on Monday, July 27. Between Sunday and Wednesday, 181mm of rainfall had been recorded at the weather station.

It was not just the SES that was kept busy, but Port Stephens Marine Rescue unit responded to a mayday call between Port Stephens and Broughton Island, rescuing four "extremely cold men sitting on an upturned vessel".

According to the NSW Bureau of Meteorology, the weather for the Raymond Terrace side of the Port is forecast to be partly cloudy and mostly sunny through to Tuesday until showers return.

For Nelson Bay, showers are predicted to fall on Thursday and Friday but clear up for the weekend until Tuesday when more rain is predicted to fall.