Weather warnings in place as businesses threatened

The Bureau of Meteorology (BOM) told reporters it expects an easing of conditions over the next 24-36 hours but has issued warnings as strong winds and seven-metre waves hit the coast.

"We do have some very large swells and quite dangerous conditions along the coast," bureau senior meteorologist Rob Webb said.

The storm warning has been lifted but a gale warning remains as the bureau predicts strong winds which could bring dangerous conditions.

The State Emergency Service (SES) has received 975 calls for assistance, mostly regarding fallen trees.

They are expecting more calls to come from the northern region of the state as bad weather continues.

"I'd imagine that 900 mark would push over into the 1000 mark," a spokeswoman for the SES told reporters.

Emergency crews worked through the night to restore power to more than 25,000 homes and businesses in NSW after powerlines were damaged.

"The main areas affected by yesterday's (Tuesday's) strong winds included parts of Sutherland, Bankstown, Darlinghurst, Manly Vale, Lane Cove, Terrey Hills, the NSW Central Coast and Newcastle," a spokesman for energy company Ausgrid said.

Ferry services between Manly and Circular Quay were suspended on Wednesday morning with shuttle buses replacing them and the Cronulla to Bundeena ferry service was cancelled due to bad weather.