Safety
Thai Meteorological Department Issues Heavy Rain Warning for 55 Provinces
Thailand faces widespread heavy rainfall as a monsoon trough impacts the northern and northeastern regions, prompting warnings of flash floods.
On September 5, 2026, the Thai Meteorological Department issued a weather alert for 55 provinces across Thailand. According to Khaosod Online, the current weather pattern is driven by a monsoon trough passing through the North and upper Northeast, moving toward a low-pressure area in the Gulf of Tonkin. This is compounded by a moderate southwest monsoon covering the Andaman Sea and the Gulf of Thailand.
Residents and travelers in the affected areas, particularly those near the Mekong River basin, foothills, and low-lying regions, are advised to remain vigilant against potential flash floods and forest runoff. The department specifically warns against traveling through areas prone to recurring flooding. In Bangkok, there is a 60% chance of rain.
Maritime conditions are also affected, with moderate waves expected in the Andaman Sea and the Gulf of Thailand. The upper Andaman Sea is forecasted to see waves reaching approximately 2 meters, with higher swells in areas experiencing thunderstorms. Mariners are urged to exercise caution and avoid navigating through storm-affected zones.
While the forecast covers the 24-hour period ending at 6:00 AM on September 6, 2026, the exact duration of the heavy rainfall remains subject to ongoing meteorological updates. Travelers are encouraged to monitor local news and official government channels for real-time safety information and potential travel disruptions.