The weather of each country will depend on the location of each country. Which Thailand located in the center of Southeast Asia. The Thailand climate is controlled by tropical monsoons and the weather in Thailand is generally hot and humid across most of the country throughout most of the year. While Thailand’s seasons are generally divided into the hot season, cool season, and rainy season. The weather in central, northern, and northeastern Thailand is determined by three seasons, whereas the southern, coastal regions of Thailand feature only two.