Typhoon Bavi Intensifies Monsoon, Heavy Rain and Floods Loom

BANGKOK — 11 July 2026, Thailand's Meteorological Department has issued its sixth weather warning, cautioning that Typhoon Bavi will strengthen the southwest monsoon and bring heavy to very heavy rainfall, flash floods and rough seas across parts of the country through 15 July 2026.

The warning said the strengthened southwest monsoon over the Andaman Sea, Thailand and the Gulf of Thailand will generate strong winds and hazardous sea conditions.

Waves in the upper Andaman Sea are forecast to reach 2–4 metres, exceeding 4 metres during thunderstorms. Waves in the upper Gulf of Thailand and lower Andaman Sea are expected to reach 2–3 metres, rising above 3 metres in stormy conditions.

The department advised all vessels to navigate with caution and avoid areas affected by thunderstorms. Small boats in the Andaman Sea and the Gulf of Thailand were urged to remain ashore during the warning period.

Between 11 and 14 July, heavy to very heavy rain is forecast for parts of the western South, western Central Plains and eastern Thailand, with Ranong, Phang Nga, Kanchanaburi, Chanthaburi and Trat identified as provinces at particular risk.

Residents in vulnerable areas, especially near hillsides, waterways and low-lying areas, were urged to watch for flash floods and forest runoff caused by accumulated rainfall.

The department said Typhoon Bavi, currently over the Pacific Ocean east of Taiwan, is expected to make landfall along the eastern coast of Fujian Province, China, between 11 and 12 July.

Although the storm is not expected to make landfall in Thailand, it will intensify the southwest monsoon affecting the country.

Authorities advised travellers heading to areas affected by the typhoon to monitor weather updates before departure.

The Meteorological Department said its next weather bulletin would be issued at 17.00 hrs on 11 July 2026.