Photo: Pok Rie / Pexels
Severe flooding is continuing in eastern Thailand as of Thursday 8 October 2026, with Chachoengsao, Nakhon Nayok and Prachin Buri hit hardest. Bangkok is mostly dry, with some flooding in eastern districts, and officials expect those areas to improve significantly next week. A new round of rain is likely from Friday to Tuesday, with heavy rain forecast for parts of the South. Krabi and Koh Lanta are not named among the heavy-rain provinces.
The situation in the east
Flooding is severe and widespread in eastern Thailand. The worst-hit provinces are Chachoengsao, Nakhon Nayok and Prachin Buri. Water levels have started to drop in the Kabin Buri and Muang districts of Prachin Buri.
Rivers in the eastern provinces hold about 2.1 billion m³ of water, mostly flowing into the eastern reaches of the Bang Pakong River. Heavy runoff from Nakhon Nayok and Prachin Buri could overflow the Bang Pakong River embankments in Chachoengsao. Runoff is also moving fast from hills in eastern Chachoengsao toward the western side, where the province borders Bangkok, and it is overtopping embankments there.
Officials are draining water into seaside canals as fast as possible. Canal gates in eastern Bangkok will be controlled to limit inflow from Chachoengsao.
Bangkok
Bangkok is mostly dry. Floodwater remains only on parts of Chalong Krung and Luang Phaeng roads, and vehicles can still pass.
Eighty communities reported some flooding. The districts are:
- Sai Mai
- Nong Chok
- Khlong Sam Wa
- Khannayao
- Bung Kum
- Min Buri
- Saphan Sung
- Lat Krabang
- Prawet
Canals are full in Nong Chok, Bang Kapi and parts of Lat Phrao because of inflow from Chachoengsao. The BMA is draining the 80 communities through sewers, canals and the Chao Phraya. Eastern communities should improve significantly next week.
Flood-related garbage should all be collected within 5 days. So far 3,118 tonnes have been collected, at 346 tonnes a day.
Chao Phraya basin
Rainwater in the Chao Phraya basin has been at manageable levels for the past few days. Discharge at the Chao Phraya dam in Chai Nat is 2,350 m³/s, well above the 1,620 m³/s seen before flooding began on 23 September.
The level above the barrage is 16.03 m. It can be regulated to hold back future rain and lower downstream levels, including Greater Bangkok. Ayutthaya should drop 10 to 20 cm soon, and the river should also fall in Pathum Thani, Bangkok and Nonthaburi.
Rain forecast
A new round of rain is likely from Friday to Tuesday. It increases from Saturday to Monday, especially in the west of the country, with more following in the South.
| Day | Rain expected | Heavy rain |
|---|---|---|
| Friday | Lower Northeast, East and South | Nakhon Si Thammarat, Phangnga, Ranong, Surat Thani, Songkhla and Yala |
| Saturday | Lower North, lower Northeast, Central Plains (including Greater Bangkok), East and South | Nakhon Si Thammarat and Phangnga |
| Sunday | Lower North, Central Plains (including Greater Bangkok), East and South | Chumphon, Phatthalung, Ranong, Satun, Songkhla and Surat Thani |
| Monday | Not specified | Nakhon Si Thammarat, Surat Thani and Trang |
What this means for travellers
- Eastern flood zone: Avoid Chachoengsao, Nakhon Nayok, Prachin Buri and eastern Bangkok (Lat Krabang, Min Buri, Nong Chok and nearby districts). Roads and travel may be disrupted there.
- Bangkok: Mostly normal. Only a few roads are wet and they are passable. Flights and the city centre are not described as affected.
- South, including the Andaman side: Heavy rain is forecast from Friday to Monday. Krabi and Koh Lanta are not named in the heavy-rain lists. The named provinces include Phangnga, Ranong, Trang and Satun, which border or sit near Krabi's coast. Expect rough weather, possible ferry or boat disruption, and wet roads. Check local forecasts and operator notices.
- West: Heavy rain is expected in the western region too, so check for disruption if you are heading there.
Who said what
The details come from a government briefing and are paraphrased. Ekkapob Pienpises, the government spokesman, said more rain is likely from Friday to Tuesday, with the South to follow. Paitoon Kengkarnchang, deputy secretary-general of the Office of National Water Resources, gave the figure of 2.1 billion m³ in the eastern rivers and said Bangkok's canal gates will be controlled. Kriangkrai Sivasiriyangkun, BMA water quality director, said eastern Bangkok should improve significantly next week. Lalida Persvivatana, deputy government spokeswoman, and meteorologist Wirongrong Sukha were also named as sources.
Information sourced from Bangkok Post.