Bangkok and at least three provinces were shaken by two moderate earthquakes centered near the southern coast of Myanmar on Monday morning, the Earthquake Observation Division reported.

The division said the first quake, 5.3 on the Richter scale, was detected at 9.05am Thailand time. Its epicentre was 10 kilometres underground near the southern coast of Myanmar, 247km southwest of Thailand's Mae Sot district in Tak province.

The second, 3.2-magnitude tremor was 10km deep, also near the southern coast of Myanmar, at 9.18am Thailand time.

People in Bangkok, Chiang Mai, Lampang and Nonthaburi sent about 40 reports to the division saying they felt the quakes and suffered nausea for short periods. Most of them were in buildings in Bangkok.