Meteorological Bulletin No. 1 warns of heavy to very heavy rain in the eastern region and the western side of the southern region. A depression in the Pacific Ocean is likely to intensify into a tropical storm but will not move into Thailand. Tags: [weather, heavy rain, tropical storm, Thailand, Pacific Ocean]
On 23 July 2026, the Meteorological Department issued Bulletin No. 1 concerning heavy to very heavy rain in Thailand, effective from 26 to 30 July 2026. It states that Tags: [meteorological bulletin, weather warning, Thailand]From 26 to 30 July 2026, Thailand will experience heavy rain in some areas and very heavy rain in parts of the eastern region and the western side of the southern region. This is due to a monsoon trough crossing the upper northern region of Thailand, Laos, and northern Vietnam, combined with the southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand, which will strengthen. Residents are advised to be cautious of heavy to very heavy rainfall and accumulated rain that may cause flash floods and flash floods, especially in foothill areas near water flow paths and low-lying areas. Waves in the upper Andaman Sea will be relatively strong, reaching 2-3 meters high, with waves exceeding 3 meters in areas of thunderstorms. Tags: [heavy rain, monsoon, flash floods, Andaman Sea, Thailand]
The upper Gulf of Thailand and the lower Andaman Sea will have waves about 2 meters high, with waves over 2 meters in areas of thunderstorms. Mariners in the Andaman Sea and the Gulf of Thailand should navigate with caution and avoid sailing in areas with thunderstorms. Small boats in the upper Andaman Sea should refrain from going out to sea during this period. Tags: [sea conditions, wave height, maritime safety, Thailand]
Meanwhile, the depression in the Pacific Ocean is likely to strengthen into a tropical storm and will pass over the northern Philippines into the upper South China Sea on 24-25 July 2026. It is then expected to make landfall in Guangdong Province, China, on 26-27 July 2026. This storm will not move into Thailand. Travelers to the affected areas are advised to check weather conditions before traveling during this period. Tags: [tropical storm, Pacific Ocean, Philippines, China, travel advisory]For safety and to minimize potential impacts. Tags: [safety, precaution, weather advisory]