According to Thai statistical agencies and international recruitment agencies, the average salary in Thailand in 2023 is 15,416 baht per month or $450. At the same time in the capital, Bangkok, they earn an average of 22,274 baht ($650). In the private sector it is 21,301.04 baht and in the public sector it is 30,068.52 baht.
For a breakdown see;
Salary in Thailand in 2023 (wagecentre.com)