A heavy overnight downpour that lasted more than five hours caused traffic chaos and disruption throughout Bangkok.
At least three schools simply announced they were closing for the day.
Floods at Monday morning rush hour extended from Rama 4 Road and Asoke to Ratchadaphisek and in the east as far as Samut Prakan’s BTS Bearing BTS station.
The rain began before 2am in many areas, and did not let up until after 6am. Heavy thunder and lightning accompanied the storm system.
The Sacred Heart Convent School in Bangkok's Klong Toey district closed doors, as did Srinakarinwirot University and Prasarnmit Demonstration School (Elementary) on Asoke Montri Road.
According to traffic radio station JS100, Bangkok city clerk Sanya Chenimit said Klong Toey received the heaviest rainfall, with 136mm between 2am and 5am. The Bangkok Metropolitan Administration said it expected to be able to drain the floods within one to two hours.
An image posed on the Facebook page of JS100 by @Benji_pla shows the flood at Sukhumvit 33.
An image posted on the Facebook page of JS100 shows the floods around BTS Bearing station Monday morning.