The SES in NSW has been called out to more than 9000 homes and businesses as the clean-up from the damage weekend storms gets underway, and still has about 3000 requests for assistance to attend.

And while heavy rains have eased, flood warnings are still in place for many rivers in NSW threatening thousands of homeowners.

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The rivers will rise over the next 10-12 hours, and are having a major impact on traffic and public transport in western Sydney.

Around 30,000 homes are still without power in NSW and Queensland. Photo: AAP.

Acting SES Commissioner Greg Newton said at the height of the wild weather, the major problem was homes being flooded.

But high winds have brought down trees and caused structural damage to properties.

“We have got quite a bit of work to do in towns like Picton where there was about a metre of water through that town just on dusk yesterday where we had the high number of flood rescues,” he told the Seven Network on Monday.

On Sunday about 70 to 90mm of rain fell across Sydney.

The storm has cleared Sydney but will smash the state’s south coast for another day, dumping another 100mm on the already-soaked region, before moving south towards Tasmania.

The Nepean and Hawkesbury rivers in outer Sydney remain on flood watch.

The weekend of wild weather has left NSW battered and bruised, with a big clean-up job ahead.

Beachside homes and buildings have been smashed by huge waves and flood warnings remain in place for a number of NSW rivers, but the complex low that brought the torrential rain and strong winds has moved south and conditions have eased.

The NSW SES was called out to more than 9000 jobs over the weekend and performed 270 rescues in flooded areas.

Authorities performed more than 270 rescues. Photo: AAP.

“Many of them because people have driven into water. You don’t know how deep the water is and how fast the water is flowing and often you don’t know if the road is even there underneath the vehicle,” SES Acting Commission Greg Newton told the Nine Network on Monday.

The SES was still to work through about 3000 of the 9000 call-outs.

“Our crews will be out there at first light this morning to get that clean-up going,” Mr Newton said.

He said authorities were still concerned about a number of swollen rivers that had “significant amounts of water in them”, particularly the Nepean and the Hawkesbury out of Sydney.

Between 70mm and 90mm fell across Sydney on Sunday, causing evacuations in low-lying northern and southwestern suburbs.

Dangerous waves are expected to continue to pound the state’s coast on Monday, with the Bureau of Meteorology predicting another day of foul weather in the south.

Major flooding is expected around Menangle on Monday as the extensive downpour is channelled into the Nepean River.

The complex low that brought the heavy rains and winds was hitting Victoria and Tasmania on Monday.

The Manly ferry is expected to be replaced by buses on Monday morning, while trains from Granville to Cabramatta are out due to a landslip and between Bondi Junction and Martin Place.