Southern Thailand is facing more torrential rain after downpours killed at least 15 people and forced the navy to help evacuate hundreds of stranded tourists.
At least four people died in landslides in Krabi province, and more than 100 others were injured, with dozens missing.
With access to some of the seven villages hit by landslides difficult and much of the region's telephone service cut off, it was feared the actual death toll was higher.
Vittayen Muttamara, deputy director of the government's flood centre, said many urban and rural areas were inundated, and connecting roads blocked by mud and rock slides.
The Thai navy sent three vessels to help evacuate tourists from resort islands such as Koh Samui, where air traffic was disrupted by flooding around its airport.
Prime Minister Abhisit Vejjajiva visited the region and ordered residents evacuated from all areas at risk.
Thailand's weather bureau said torrential rain was expected for one or two more days over much of southern Thailand.