Rain forecast for 70% of central Thailand on October 14
Thailand’s weather agency warns of flash floods from isolated heavy rain in Bangkok, the lower North, Central region, East and upper South
- The Thai Meteorological Department (TMD) has forecast thundershowers over 70% of Thailand's Central region for the 24-hour period starting at 6 am on October 14.
- The forecast includes warnings of isolated heavy rain, which could trigger flash floods and sudden run-off, especially in low-lying areas and near waterways.
- The weather is caused by a high-pressure system from China pushing moist easterly and southeasterly winds over Thailand.
- Specific provinces in the Central region expecting heavy rain include Nakhon Sawan, Uthai Thani, Kanchanaburi, and Phra Nakhon Si Ayutthaya.
The Thai Meteorological Department (TMD) warned on October 14, 2026, of isolated heavy rain and flash-flood risks in parts of Thailand, with thundershowers forecast over 70% of the Central region. The outlook covers the period from 6am on October 14 to 6am on October 15, Thai time.
The TMD identified the lower North, Central region including Bangkok and surrounding areas, East and upper South as areas of particular concern. Heavy and accumulated rainfall could trigger flash floods and sudden run-off, especially on foothill slopes near waterways and in low-lying areas.
Cool air from China draws moisture towards Thailand
A high-pressure system, or cool air mass, from China continues to cover northern and northeastern Thailand and the South China Sea, according to the TMD. The system is driving easterly and southeasterly winds that carry moisture from the South China Sea over Thailand and the Gulf of Thailand.
Regional thundershower coverage ranges from 30% to 70%
The TMD’s October 14–15 outlook puts thundershower coverage at 30–70% of individual regions, with the highest coverage in the Central region. The regional forecasts are:
North: The TMD forecasts thundershowers over 30% of the region during October 14–15, with isolated heavy rain in Tak and Kamphaeng Phet. Minimum temperatures are expected at 21–26°C and maximum temperatures at 33–36°C, with easterly winds of 10–20 km/h.
Northeast: Thundershowers are forecast over 30% of the region during October 14–15, mainly in Loei, Chaiyaphum, Nakhon Ratchasima, Buri Ram, Surin, Si Sa Ket and Ubon Ratchathani, according to the TMD. Minimum temperatures are expected at 21–24°C and maximum temperatures at 33–34°C, with easterly winds of 10–25 km/h.
Central region: The TMD’s October 14–15 forecast indicates thundershowers over 70% of the region, with isolated heavy rain in Nakhon Sawan, Uthai Thani, Chai Nat, Suphan Buri, Phra Nakhon Si Ayutthaya, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon and Samut Songkhram. Minimum temperatures are expected at 23–26°C and maximum temperatures at 34–36°C, with southeasterly winds of 10–20 km/h.
East: The TMD forecasts thundershowers over 60% of the region during October 14–15, with isolated heavy rain in Chachoengsao, Sa Kaeo, Chon Buri, Rayong, Chanthaburi and Trat. Minimum temperatures are expected at 24–26°C and maximum temperatures at 32–34°C, with southeasterly winds of 10–30 km/h. Waves are forecast below 1 metre, rising above 2 metres in thunderstorms.
South, east coast: Thundershowers are forecast over 60% of the area during October 14–15, with isolated heavy rain in Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani and Nakhon Si Thammarat, according to the TMD. Minimum temperatures are expected at 23–25°C and maximum temperatures at 33–35°C, with southeasterly winds of 15–30 km/h. Waves are forecast at around 1 metre, rising above 2 metres in thunderstorms.
South, west coast: The TMD’s October 14–15 outlook forecasts thundershowers over 60% of the area, with isolated heavy rain in Phang Nga and Krabi. Minimum temperatures are expected at 23–25°C and maximum temperatures at 31–35°C, with easterly winds of 15–30 km/h. Waves are forecast at around 1 metre, rising above 2 metres in thunderstorms.
Bangkok and surrounding areas: The TMD forecasts thundershowers over 60% of the area during October 14–15, with isolated heavy rain. Minimum temperatures are expected at 26–27°C and maximum temperatures at 33–35°C, with southeasterly winds of 10–20 km/h.
Storm waves could exceed 2 metres in the Andaman Sea and Gulf
Waves in the Andaman Sea and Gulf of Thailand could exceed 2 metres in areas affected by thunderstorms, the TMD warned. Mariners should check their planned routes, navigate cautiously and avoid sailing through thunderstorms.
