The death toll from torrential rain, flooding and landslides in central Vietnam has risen to 55, with 13 people reported missing.

Rainfall exceeded 1900 millimetres in some parts of central Vietnam over the past week. The region is a major coffee production belt and home to popular beaches, but it is also prone to storms and floods.

Nearly half of the fatalities were in Dak Lak province, where 27 people have died, while 14 people have died in Khanh Hoa province, the nation's disaster agency said.

The government estimates the flooding has cost the economy around 8.98 trillion dong ($A528 million).

More than 235,000 houses were flooded and almost 80,000 hectares of crops were damaged, Vietnam's disaster agency said.

Australian Associated Press

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