Extremely dry conditions across much of NSW have prompted authorities to increase the number of regions starting their official fire season on August 1.

From the start of next month, 10 local government areas in the state's north-east will have tighter restrictions on burning.

The regions entering the bushfire danger period early include Kyogle, Lismore and the Richmond Valley, the NSW Rural Fire Service said.

Fire season is starting early for parts of NSW. Credit:Nick Moir

“Areas in the north of the state are experiencing extremely dry conditions and it is a worrying sign, especially given we have only received half of the average rainfall during winter and no meaningful rain is forecast in the next few months,” Rob Rogers, RFS's deputy commissioner, said