Illawarra residents could be forgiven for ditching the doona due to an "exceptionally warm" winter night, with the temperature reaching an overnight minimum of 16 degrees in Wollongong.
The coolest part of the evening was just after midnight when it hit 16 degrees in Port Kembla, with the temperature creeping up progressively from that point. By 7am it had reached 19 degrees.
In Sydney the minimum overnight temperature was 17 degrees; eight degrees above the average minimum.
Weatherzone senior meteorologist Brett Dutschke said the above-average temperature was caused by the wind stirring up warm air from Thursday's balmy afternoon.
"The wind picked up the remnants of Thursday's warm air, lifting the overnight temperature above 18 degrees (in Sydney)," he said.
"The temperature is very unusual for this time of year. It was an exceptionally warm night."
It was significantly cooler in Albion Park, where it was 6 degrees at 7am on Friday.
The city will continue to bask in warm conditions heading into the weekend, the Bureau of Meteorology's forecast shows.
The temperature will reach a top of 22 degrees in Wollongong and Albion Park on Friday with light winds, while Saturday will be mostly sunny with a maximum of 20 degrees.
The warmer weather will continue into next week with a maximum of 24 degrees forecast for Tuesday.
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