A Wednesday evening downpour which coincided with the end of the office hours as office workers rushed for homes in private cars or buses causing widespread traffic gridlock throughout the city.
Several roads such as Lat Phrao, Ramkhamhaeng, Srinakharind and Vibhavadi Rangsit were temporarily flooded on several sections of the roads as the sewerages were unable to cope with excessive amount of rain water or clogged.
But city officials said that they would be able to drain the water out through Saen Saeb and Lat Phrao canals into the Chao Phraya river within a few hours.
The Meteorological Department said that about 60 percent of Bangkok was lashed with rains this evening as a result of the influence of southwest monsoon.
Some of the areas reported to be flooded include Ngamwongwan, Permsak housing estate in Bang Khae, Soi Ramkhamhaeng 64, Lat Phrao road from Soi 87-89, Chokechai market, Lat Phra Soi 55, Lat Phra Soi 122, Happy Land road and Sivara road.