The two main types - tropical climate in the north and the tropical monsoon in the southern and southeastern regions. In the central part of the distinguished three seasons - hot (March to May) and rainy (June to October, when the country falls upon the south-east monsoon and falls most of the annual precipitation) and cool (November to February). In Bangkok, in April, the temperature reaches 29 C, in December of 25 C. Rainfall is 1000-2000 mm. year (in the mountains up to 5000 mm.), which fall mainly in the form of strong tropical rains. But common to all countries of the rainy season there - depending on the direction of the prevailing wind, even the two neighboring regions can obtain an order distinguished between a rainfall.