It is in the third tier of the Thai football league system.
No club was promoted to the Thai Division 1 League.
Last years league champions Trang and runners up Pattani failed to qualify from the 2012 Regional League Division 2 championship pool.
Phattalung, Songkhla were relegated from the 2012 Thai Division 1 League.
Hat Yai, Songkhla have withdrawn from the 2013 campaign.