NSW is in for another day of miserable weather and cool temperatures, but the worst of the wild weather has passed, the Bureau of Meteorology says.

The state was on Monday lashed with heavy rain, flash flooding, gale-force winds, cold temperatures and hazardous surf conditions, but conditions eased overnight.

A severe weather warning was issued for parts of the NSW Hunter region, and damaging winds buffeted the bulk of the NSW coast.

The State Emergency Service’s Hunter region units received 362 calls for help, and spent the day rescuing horses, patching up tree damage and repairing leaky roofs.

Massive rainfall totals were recorded, with Gosford receiving 128mm in 24 hours and Sydney’s St Ives 98mm.

“One that’s really noteworthy, that at first we were a little bit sceptical of because of just how intense the rainfall was, is at a location called Wallis Lakes (near Forster),” meteorologist David Wilkie told AAP.

“They received 248mm between 1pm and 4pm and 124mm in an hour.”

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Daytime temperatures also dropped to 15C, down about eight degrees for this time of year, due to a cold front which saw almost 10cm of snowfall in the alps.

The weather system that caused the havoc will stick around until the end of the week, but the most dangerous conditions had passed, Mr Wilkie said.

Cool temperatures and cloudy weather will continue on Tuesday, with a top of about 20C forecast for Sydney, but storms are expected to return on Wednesday.

AAP

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