NSW SES operations commander Tony Day said residents should prepare for winds averaging up to 60 kilometres per hour, with gusts of up to 90km/h, on Tuesday and Wednesday.

Weatherzone meteorologist Joel Pippard said the southerly change is set to hit the Port Macquarie-Hastings coastline between 10am and 1pm on Tuesday, July 14.

He said strong winds will be accompanied by some rainfall of about five to 10mm.

On Tuesday, the daily temperature is predicted to reach 17 degrees. However, Mr Pippard said the cool winds will result in the temperature feeling more like 11 degrees.

"Those winds will be very strong and very gusty," he said.

"You're going to notice it."

The strong winds will also create large swells of about five metres at the beaches and seven metres offshore.

The weather system is predicted to continue throughout Wednesday, while conditions are expected to ease by Thursday.

The temperature for Wednesday is predicted to reach a top of 17 degrees but Mr Pippard said it will feel five degrees cooler.

Mr Day urged residents to stay clear of areas impacted by damaging surf, erosion scarps and damaged buildings or structures and not to go sightseeing.

He said this may hinder recovery efforts and put community members and emergency responders at risk.

The NSW SES is encouraging residents to clean roofs, gutters and downpipes, trim trees branches away from property and secure down outdoor items and furniture as a way of preparing their property for severe weather.

Mr Day added the current COVID-19 environment presents additional considerations for emergency services in responding to severe weather events.

"The most practical way the community can help should the predicted weather eventuate is to avoid all not essential travel and to never drive, ride or walk through affected areas," he said.

The SES recommends people monitor the NSW Bureau of Meteorology for any severe weather warnings for heavy rain or severe wind warnings.

For more advice on how to prepare for storms and floods, visit the SES Get Ready website www.ses.nsw.gov.au/getready

For emergency storm and flood assistance, call NSW SES on 132 500.

Visit beachsafe.org.au or download the Beachsafe App, to find patrolled locations and up-to-date beach conditions.

Hazardous Surf Conditions Safety Tips:

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