The rather strong northeast monsoon prevails over the Gulf, the South and the Andaman Sea with isolated heavy to very heavy rains in the lower South. The rather strong wind forces the waves in the lower Gulf up to be 2-3 meters high and above 3 meters high in thundershowers. In the upper Gulf, the waves are likely about 2 meters high and above 2 meters high in thundershowers. The high-pressure system from China covers the upper country and the South China Sea with a decrease in temperature by 1-3 °C and strong wind. People in the upper country should keep healthy due to cold weather.