Firefighters have worked tirelessly through the night to contain several bushfires burning across NSW including a large blaze in the Royal National Park, just south of Sydney..
Several fires are continuing to burn out of control and firefighters are preparing for another hot and dry day with total fire bans in place for parts of the state.
The NSW Rural Fire Service said just after midday on Sunday that conditions were worsening as 700 firefighters battled 38 bush and grass fires across the state.
The Royal National Park will remain closed on Sunday as the NSW Rural Fire Service works to contain a fire that forced the evacuation of hundreds of people yesterday.
Two fires burned through 1488 hectares of national park and boats had to be called in to evacuate people stranded on Garie Beach.
Firefighters worked through the night to extinguish one of those blazes with the second fire now being brought under control.
RFS Deputy Commissioner Rob Rogers told Nine News on Saturday that the bushfire was being treated as suspicious and that police and fire investigators would be examining its cause.
Some residents were allowed into certain areas of the national park on Sunday but it otherwise remained closed to the general public.
Across the state, eight fires are being brought under control and eight fires are burning out of control, including two large ones in the state's north.
A bushfire in the Pilliga Forest near Narrabri has burnt through approximately 48,000 hectares with aircraft being brought in to help control the blaze.
Another fire in Bundarra, north of Tamworth, has burnt through close to 5000 hectares and some isolated properties in the area have come under threat.
A total fire ban remains in place for large parts of the state with the North Western, Greater Hunter, Central and Southern Ranges areas all being issued with a severe fire danger rating.
The Greater Sydney Region has been issued with a very high fire danger rating and the NSW Rural Fire Service is encouraging people to monitor conditions.
Sydney can expect another hot and dry day with the mercury set to rise to 30 in the city and up to 40 in Penrith.