The monsoon trough lies across the North and the Northeast of Thailand while the moderate southwest monsoon prevails over the Andaman Sea, the South, the Central, the East and the Gulf. Isolated heavy rains are likely in the upper country while isolated thundershowers are possible in the South. The wind and waves in the upper Andaman Sea and the upper Gulf are likely about 2 meters high and above 2 meters high in thundershowers. In the lower Andaman Sea, the waves are likely 1-2 meters high and above 2 meters high in thundershowers.