Hatyai-Songkhla Hotel Association President Dr Sitthipong Sitthiprapha said local authorities had provided food and boats to move the stranded tourists to safer areas, New Straits Times reported.
Malaysia's foreign ministry said in a Facebook post on Saturday that it and the Thai government were coordinating efforts to assist the stranded Malaysians, Free Malaysia Today reported.
The Malaysian Consulate-General in Songkhla advises all Malaysians planning to travel or visit southern Thailand to delay their plans because of ongoing heavy rainfall and floods affecting many areas.
The Thai city of Hat Yai, popular with tourists, has been declared a disaster zone along with all other districts in southern Songkhla province, as heavy rain continues to cause severe flooding, Reuters reported.
Rising waters have cut off major roads, isolating hotels and trapping tourists.
Electricity has been cut in several neighborhoods for safety reasons, while internet services and water systems have been disrupted, the Bangkok Post reported.
Since Nov. 19, Hat Yai has recorded 595 mm of cumulative rainfall, surpassing the totals seen during both the 2000 flood (497 mm) and the 2010 flood (516 mm).