BANGKOK, Thailand – The Thai Meteorological Department has forecast heavy rain and thunderstorms across Thailand in the next 24 hours, with particularly severe rainfall expected in parts of the Northeastern and Southern regions. Residents are advised to stay alert for possible flash floods and landslides, especially in low-lying areas and near mountain slopes.
This weather is driven by a strong southwestern monsoon affecting the Andaman Sea, Southern Thailand, and the Gulf of Thailand. Additionally, a tropical depression over the northern South China Sea is expected to make landfall in central Vietnam between September 19-20.
Maritime Warnings: Both the Andaman Sea and the upper Gulf of Thailand are experiencing strong winds and high waves. Wave heights of 2-4 meters are expected, with areas of thunderstorms potentially seeing waves exceed 4 meters. Lower Gulf waters will experience waves up to 2 meters, and above 2 meters in areas with thunderstorms. Seafarers are advised to exercise caution and avoid navigating through stormy conditions. Small boats in the Andaman Sea and upper Gulf should remain ashore during this period.
Bangkok and Vicinity: 60% chance of thunderstorms. Low temperatures of 25-27°C and highs of 31-33°C. Southwesterly winds at 10-25 km/h.
Northern Region: 60% chance of thunderstorms, mainly in Mae Hong Son, Chiang Mai, Lamphun, Lampang, Phrae, Uttaradit, Sukhothai, Tak, Kamphaeng Phet, Phichit, Phitsanulok, and Phetchabun. Low temperatures of 24-26°C, highs of 33-35°C. Winds variable at 10-15 km/h.
Northeastern Region: 70% chance of thunderstorms, with heavy to very heavy rain in Bueng Kan, Sakon Nakhon, Nakhon Phanom, Kalasin, Mukdahan, Roi Et, Yasothon, Amnat Charoen, Si Sa Ket, and Ubon Ratchathani. Lows of 23-26°C, highs of 28-33°C. Variable winds at 10-20 km/h.
Central Region: 60% chance of thunderstorms, particularly in Nakhon Sawan, Uthai Thani, Saraburi, Ayutthaya, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon, and Samut Songkhram. Lows of 23-27°C, highs of 32-35°C. Southwesterly winds at 10-25 km/h.
Eastern Region: 60% chance of thunderstorms, with isolated heavy rain and strong winds, especially in Chanthaburi and Trat. Lows of 24-26°C, highs of 29-34°C. Southwesterly winds at 20-45 km/h. Wave heights of 2-4 meters, exceeding 4 meters in thunderstorms.
Southern Region (East Coast): 70% chance of thunderstorms, with heavy to very heavy rain in Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, and Songkhla. Lows of 23-26°C, highs of 28-33°C. Winds from the southwest at 20-40 km/h north of Surat Thani, with waves of 2-3 meters, and over 3 meters in thunderstorms. Winds of 20-35 km/h south of Nakhon Si Thammarat, with wave heights of 2 meters and higher offshore.
Southern Region (West Coast): 80% chance of thunderstorms, with heavy to very heavy rain in Ranong, Phang Nga, Phuket, Krabi, Trang, and Satun. Lows of 24-25°C, highs of 26-29°C. Southwesterly winds at 20-45 km/h, with waves of 2-4 meters, and exceeding 4 meters in thunderstorms.
