The Test & Go programme will be reintroduced on February 1, the Centre for Covid-19 Situation Administration (CCSA) said.
The scheme was suspended a month ago after only seven weeks due to the Omicron variant.
The scheme requires visitors to test on arrival and again five days later, while agreeing to have their whereabouts tracked, CCSA spokesperson Taweesilp Wisanuyothin said.
Authorities also extended the hours restaurants are allowed to serve alcohol to 11pm from 9pm. Bars and nightclubs will remain closed, however.
The CCSA also agreed to expand the “Sandbox” quarantine waiver programme to include popular eastern beach destinations Pattaya and Koh Chang.
The scheme, where vaccinated tourists must agree to stay in one location for a week, is currently operating in Phuket and Koh Samui.
