The oil slick from Thai Oil's ruptured offshore pipeline will not reach Pattaya but may affect Koh Si Chang and Bang Saen beach, according to the provincial governor.
He said on Monday night that the strong wind would probably wash some of the oil up on Si Chang island and part of Bang Saen beach.
Its impact would be limited because the amount of leaked crude was small and swift action was taken to contain and control it, he said.
Officials earlier said the oil slick could reach Bang Saen beach on Sunday.
The Marine Department said that the oil spill happened when a Panama-registered tanker was pumping crude into a main pipeline operated by Thai Oil at a jetty in the sea off Sri Racha.
The leak lasted about five minutes and about 60,000 litres of crude leaked into the sea.
About 8,000 litres of dispersants were used to break up and sink the oil. There was no oil slick visible near Si Chang island on Tuesday morning, the department said.
The deputy governor of Chon Buri said more than 80% of the oil spill was already dealt with, but there could still later be oil washed up on beaches in Sri Racha, Bang Saen and Bang Phra areas.
