Thailand's climate is typically tropical. It has three seasons, rainy (mid-May to September), dry (October to February), hot (March to mid-May). The southern isthmus is always hot and humid.
Thailand's climate is tropical, high both in temperature and humidity, and dominated by monsoons. April and May are the hottest months of the year, June sees the beginning of the South West Monsoon, and brings with it the rainy season, which continues intermittently until the end of October. From November to the end of Februaly the climate is cooled by a North East breeze. The north and north-east are generally cooler than Bangkok in winter, and hotter in summer.