Thailand issues warning of unsettled weather with gusty winds and hail
Thundershowers, gusty winds and hail are forecast, with Bangkok among the affected areas and flash flood risks near foothills and in lowlands.
- Thailand's Meteorological Department has issued a weather warning for parts of the country from October 9 through October 13.
- The forecast predicts unsettled weather, including thundershowers, gusty winds, hail, and isolated heavy to very heavy rain.
- Affected regions will vary by day, including the North, Northeast, Central, East, and South, with the warning concluding in the South.
- Authorities warn of potential dangers such as flash floods and runoff, advising the public and mariners to take safety precautions.
The Thai Meteorological Department (TMD) issued a warning at 5pm on Friday (October 9, 2026) for heavy to very heavy rain in parts of Thailand through October 13.
Unsettled weather is forecast during this period, with thundershowers, gusty winds, hail and isolated heavy to very heavy rain.
The affected regions are as follows:
- October 9: The eastern part of the Northeast, the East and the South.
- October 10: The lower North, lower Northeast, Central region including Bangkok and surrounding areas, the East and the South.
- October 11: The lower North, Central region including Bangkok and surrounding areas, the East and the South.
- October 12-13: The South.
As the rainy season draws to a close, a high-pressure system or cool air mass from China is expected to extend over upper Thailand.
Easterly and southeasterly winds are bringing moisture from the South China Sea into the Northeast, the East and the Gulf of Thailand.
The southwest monsoon continues to prevail over the Andaman Sea, while a monsoon trough lies across the South.
The department warned of dangers from thundershowers, gusty winds, heavy to very heavy rain and accumulated rainfall.
These conditions could cause flash floods and rapid runoff from higher ground, particularly on foothill slopes near waterways and in lowlands, with low-lying areas also at risk of waterlogging.
People should avoid open spaces and areas under large trees or near unstable billboards.
Waves off the East and both coasts of the South are forecast at about 1 metre, rising above 2 metres in areas with thundershowers.
Mariners in the Gulf of Thailand and the Andaman Sea should check their routes, proceed with caution and avoid sailing through those areas.
People should plan their daily activities and travel carefully during the warning period to stay safe and reduce potential impacts.
The department urged the public to follow its announcements and obtain updates through its website or by calling 0-2399-4012-13 or 1182, available 24 hours a day.
24-hour outlook with isolated heavy rain in the South
The department’s 24-hour outlook predicts isolated heavy rain in the South.
Upper Thailand is expected to see little rain overall, with isolated heavy rain still forecast in the eastern part of the Northeast and in the East.
A high-pressure system or cool air mass covers the upper North and upper Northeast.
Easterly and southeasterly winds bring moisture into the eastern part of the Northeast and the East, while the monsoon trough also crosses the Gulf of Thailand.
Regional forecast from 6pm on October 9 to 6pm on October 10
North
- Thundershowers are forecast over 20% of the region, mainly in Mae Hong Son, Chiang Mai, Tak, Kamphaeng Phet, Phichit and Phetchabun.
- Minimum temperatures are forecast at 20-24°C and maximum temperatures at 32-35°C.
- Easterly winds are expected at 10-20 km/h.
Northeast
- Thundershowers are forecast over 30% of the region, with isolated heavy rain and gusty winds in Bueng Kan, Nakhon Phanom, Amnat Charoen, Mukdahan, Sisaket and Ubon Ratchathani.
- Minimum temperatures are forecast at 21-23°C and maximum temperatures at 32-34°C.
- Easterly winds are expected at 10-25 km/h.
Central region
- Thundershowers are forecast over 30% of the region, mainly in Uthai Thani, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon and Samut Songkhram.
- Minimum temperatures are forecast at 23-26°C and maximum temperatures at 33-36°C.
- Easterly winds are expected at 10-20 km/h.
Bangkok and surrounding areas
- Thundershowers are forecast over 30% of the area.
- Minimum temperatures are forecast at 25-27°C and maximum temperatures at 34-35°C.
- Northeasterly winds are expected at 10-20 km/h.
East
- Thundershowers are forecast over 30% of the region, with isolated heavy rain and gusty winds in Sa Kaeo, Chanthaburi and Trat.
- Minimum temperatures are forecast at 23-27°C and maximum temperatures at 32-35°C.
- Northeasterly winds are expected at 15-30 km/h.
South, east coast
- Thundershowers are forecast over 60% of the area, with isolated heavy rain in Phetchaburi, Prachuap Khiri Khan, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Yala and Narathiwat.
- Minimum temperatures are forecast at 23-27°C and maximum temperatures at 32-35°C.
- Variable winds are expected at 15-30 km/h.
South, west coast
- Thundershowers are forecast over 60% of the area, with isolated heavy rain in Phang Nga, Phuket, Krabi, Trang and Satun.
- Minimum temperatures are forecast at 24-25°C and maximum temperatures at 32-35°C.
- Northwesterly winds are expected at 15-30 km/h.
