Firefighters continue to battle dozens of bushfires across NSW, with hot and windy conditions hampering their efforts and teenage boys blamed for starting two of them.
Two 16-year-olds are believed to be behind a bushfire north of Newcastle which spread out of control after they lit a campfire on Saturday during a total fire ban in the Shoal Bay area near Port Stephens.
The fire burnt out an acre of bushland and the boys were detained by locals before they were arrested by police.
They will be dealt with under the Young Offenders Act.
More than 1100 firefighters spent Saturday battling 65 bushfires across NSW, including five out of control.
An emergency warning was twice put in place for a blaze in Cessnock but was on Saturday evening downgraded to a watch and act by the Rural Fire Service.
About 175 firefighters battled the bushfire, which had threatened about 50 homes at Cessnock, Aberdare and North Kitchener with backburning operations contining into Sunday.
Another emergency warning for a fire off Lone Pine Road in Port Stephens covering 620 hectares was also downgraded on Saturday to watch and act.
The fire had burnt towards the village of Limeburners Creek but slowed under cooler conditions and firefighters will continue to work on the fire through Sunday.
A third watch and act alert has been downgraded to an advice notice for an uncontained blaze that closed the Pacific Highway at Kundabung on the NSW North Coast, with firefighters protecting homes at nearby South Kempsey.
The blazes were fanned by hot and gusty conditions, with winds up to 89km/h blasting NSW on Saturday, with conditions easing at night.
A 16-year-old boy was charged on Saturday morning after a bushfire which destroyed at least one home and damaged other properties in Sydney's west on Friday.
It began in the Llandilo area and spread over 300ha, prompting evacuations from schools and nursing homes before it was contained.
The youth, who was arrested at Penrith, has been charged with intentionally causing a fire and being reckless as to its spread.
The RFS says NSW could continue to experience similar weather until a cool change on Wednesday.
"It will still be warm and dry on Sunday, heating up on Monday and on Tuesday - we could see some hot and windy weather before some possible cooler weather returns on Wednesday," RFS Inspector Ben Shepherd told AAP.