BANGKOK, THAILAND – Thailand’s Meteorological Department warned that 58 provinces, including the capital, faced heavy to very heavy rainfall and a heightened risk of flash floods and sudden inundation through October 18, urging residents to avoid flooded roads and move to higher ground immediately.
Storm set-up and forecast
Meteorologists said a convergence of weather systems had created a dangerous weather pattern: an eastward-moving wave was drawing moisture from the South China Sea into the northeast, east, centre and north of the country, a monsoon trough lay over the upper south, and the southwest monsoon remained active over the Andaman Sea and the Gulf of Thailand. The department said the worst of the rain was likely on October 14–15, with rainfall easing in upper Thailand from October 16–20 while the south remained at risk.
Bangkok at particular risk
Officials said up to 70% of Bangkok’s urban area would be affected by heavy to very heavy rainfall. Temperatures in the capital were forecast at 24–25°C overnight and 30–34°C by day, with southeasterly winds of 10–20 km/h. Authorities cautioned that low-lying districts and neighbourhoods beside canals could see rapid rises in water level. The Meteorological Department warned: “Avoid flooded roads and seek higher ground immediately!”
North and central regions under pressure
In the north, provinces including Chiang Mai, Chiang Rai and Tak were among 12 identified as high risk, with daytime temperatures falling to around 21–25°C. Central provinces such as Nakhon Sawan, Ayutthaya and Kanchanaburi were also expected to face heavy rain and the potential for flooding and flash floods.
East and marine hazards
The east of the country was forecast to be particularly hard hit. Chon Buri, Rayong and Trat were expected to receive “very heavy” rainfall, and mariners were warned of severe thunderstorms and rough seas. The Meteorological Department advised caution for shipping, noting that waves could exceed two metres in thunderstorm-affected areas.
Southern coasts also threatened
Along the southern east coast from Phetchaburi to Narathiwat, thunderstorms were predicted to cover about 70% of the area, while on the west coast Krabi, Trang and Satun faced roughly a 60% likelihood of storms. Wave heights in the Andaman Sea were forecast to reach up to two metres, prompting warnings against non-essential boat travel and for fishermen and tour operators to exercise caution.
Advice for residents and travellers
Authorities urged people in affected provinces to prepare for sudden flooding, follow local directives and monitor weather updates. Commuters and visitors were advised to carry rain gear and avoid travelling through flooded areas. Officials stressed that conditions could change rapidly and that the public should remain alert until the threat had passed.
The advisory was issued by the Meteorological Department and was reported locally by The Nation.