NewsPattayaUpdate COVID-19 Facemasks are now mandatory in all 77 provinces in Thailand By Pattaya Mail May 1, 2021 0 2124 Share on Facebook Tweet on Twitter tweet The maximum fine for failing to wear a face mask when out in public is 20,000 baht. Police have said fines will be issued as per the following: 1st offense: 6,000 baht. 2nd offense: 12,000 baht. 3rd offense: 20,000 baht. (NNT)