Heavy Rain Risk Area
The monsoon trough lies across the North and the upper Northeast while the moderate southwest monsoon prevails over the Andaman Sea, Thailand and the Gulf. Isolated heavy rains are possible in the upper country.
The moderate winds and waves in the upper Andaman Sea are expected about 2 meters high and above 2 meters high in thundershowers.
People in the areas should beware of heavy to very heavy rains and accumulation that may cause flash floods, overflows and landslides especially along the waterways near foothills and lowlands.
All ships should proceed with caution and keep off thundershowers.
In addition, during 8–13 September 2026, the monsoon through will move down to lie across upper Thailand while the moderate southwest monsoon prevails over the Andaman Sea, Thailand and the Gulf. More rain is expected in the upper country with widespread heavy rainfall and isolated very heavy rainfall in some areas. The impacts are initially expected over the Northeastern region, before extending to the rest regions.
Varoitus voimassa ma klo 4:00 - ma klo 14:00
