The another rather strong high-pressure system from China extend to upper Thailand and the South China Sea while the westerly trough will move pass Myanmar and the North. The moderate northeast monsoon prevail over the Gulf, the South and the Andaman Sea. Cool in the morning with strong wind and decrease in temperature are forecast in the upper country while thundershowers and gusty wind are likely in the North. Isolated heavy rains are forecast in the South. In the Andaman Sea and the Gulf will strengthen, the waves will be higher than 2 meters high in thundershower areas.