The Bang Na district was the hardest hit by freak rainfall early on Wednesday, the Bangkok Metropolitan Administration’s drainage and sewerage department reported.
At 10.30am, the department said Bang Na district had accumulated rainfall of 138 millimetres from rains that started at about 5am.
The department said variable rainfall happened in Yannawa, Klong Toei, Vadhana, Phayathai, Ratchathevi, Huay Kwang, Din Daeng, Wang Thong Lang, Bang Kapi, Saphan Sung, Suan Luang, Phra Khanon, Prawet and Bang Na districts.
The Meteorological Department has predicted heavy rainfalls this week as a harbinger of another sharp drop in temperature. Forecasters attribute this to a high pressure mass that has moved down from China into Vietnam and Thailand.