The Manila-based bank said the money would be used to provide food, water and other essential services to people affected by the floods, which have covered large parts of the central plains for several weeks, and inundated parts of the capital.
"The scale and magnitude of the floods are immense and this grant will help Thailand address some of the most immediate, pressing needs," said Craig Steffensen, the bank's country director for Thailand.
The floods, sparked by heavy rains in August and September, have left at least 533 dead and caused billions of dollars in damage, shaving at least 1 per cent off the country's economic growth.//DPA