Heavy Rain Risk Area
The high-pressure system from China extend to the upper North and the upper Northeast of Thailand leading to the monsoon trough move down to lies across the lower North, the upper Central and the lower Northeast into an active low-pressure cell over the middle South China Sea. Meanwhile, the moderate southwest monsoon prevails over the Andaman Sea, the South, the Central, the East and the Gulf. Isolated heavy rains are forecast in the country while isolated heavy to very heavy rains are possible in the North, the Northeast, the Central including Bangkok and its vicinity, the East and the South regions.
The moderate winds and waves in the upper Andaman Sea are expected about 2 meters high and above 2 meters high in thundershowers.
People 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, 11-13 September, 2026, an active low-pressure cell over the middle South China Sea is expected to intensify to tropical storm and will move near the coast of upper Vietnam during 13-14 September 2026. Please stay tuned for the weather update.
Varoitus voimassa to klo 14:00 - pe klo 2:00
