
Rainfall in Bangkok showed signs of easing on Monday (September 28), but nine major roads remained heavily flooded as the Bangkok Metropolitan Administration (BMA) continued pumping water and lowering levels in four key canals.
The Bangkok Flood Control Centre reported at 6am that light rain was falling over Nong Chok district and moving northeast. The highest accumulated rainfall was recorded in Lat Krabang at 46.5 millimetres.
Skies began to clear after late-night rain moved through the capital, with no large rain bands in nearby provinces detected moving towards Bangkok at the time of the report. However, water remained on several roads while canal levels remained elevated, requiring drainage operations to continue.
Data from the BMA’s Department of Drainage and Sewerage showed that nine roads still had significant flooding, while sections of five other roads had become passable again.
The BMA urged motorists to check conditions before travelling and avoid inundated sections where possible, as pumping operations continued across affected areas.
The roads and sections requiring particular caution are:
Motorists are advised to check individual road sections before setting out, particularly on Ramkhamhaeng Road, where conditions continue to require close monitoring.
Traffic has resumed along some sections of the following roads:
The BMA stressed that Lat Phrao and Phetchaburi roads each have sections that are now passable as well as stretches where flooding remains severe. Travellers should therefore check conditions for the specific section they intend to use rather than assume the entire road has reopened.
Bangkok Deputy Governor Wisanu Subsompon reported at 6.30pm on Sunday (September 27) that rainfall was beginning to ease and water levels in some canals had started falling.
Levels had declined along parts of Khlong Saen Saep, helping some previously flooded road sections become passable again.
The BMA is operating pumps at full capacity while managing water levels across both major and secondary canals. The Bueng Makkasan drainage tunnel is also being used to accelerate the discharge of water into the Chao Phraya River.
Eastern Bangkok remains under close watch, particularly areas along Khlong Saen Saep and Khlong Prawet Buri Rom.
The immediate priority is to lower water levels in four major canals — Khlong Saen Saep, Khlong Lat Phrao, Khlong Prawet Buri Rom and Khlong Prem Prachakorn — to create more capacity for water from surrounding areas to drain into the canal network.
With rainfall expected to ease on September 28, the BMA expects drainage operations to continue making progress and water levels to gradually recede.