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This is a list of countries by average annual precipitation. List. Per the World Bank (2017) [1] [2] Country mm/ year) Continent 1 ... Thailand: 1,622: Asia 52
The driest areas are the leeward sides of the central valleys and the northernmost portion of south Thailand, where mean annual rainfall is less than 1,200 mm (47 in). [8] Most of Thailand (north, northeast, central, and east) has dry weather during the northeast monsoon and abundant rainfall during the southwest monsoon.
Thailand's annual rainfall averages around 1,700 mm. Despite the annual southwest monsoon, Thailand is subject to drought, particularly the northeastern region. [118] As of 2002, Thailand had less water available per person than any other country in Asia, and nearly one-third of its water was "unsuitable for human consumption."
Average monthly precipitation (in mm) for selected cities in Asia ; City Country Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ref. Mawsynram: India: 133.0 8.3 15.7 27.4 29.8 26.0 5.7
Rainfall is unpredictable, but is concentrated in the rainy season from May to October. Average annual precipitation varies from 2,000 mm (79 in) in some areas to 1,270 mm (50 in) in the southwestern provinces of Nakhon Ratchasima, Buriram, Maha Sarakham, Khon Kaen, and Chaiyaphum. The rainy season begins with occasional short but heavy showers ...
The annual average temperature is 28.9 °C (84.0 °F). The rainy season begins with the arrival of the southwest monsoon around mid-May. September is the wettest month, with an average rainfall of 335.9 millimetres (13.22 in). The rainy season lasts until October, when the dry and cool northeast monsoon takes over until February.
Tropical savanna climate or tropical wet and dry climate is a tropical climate sub-type that corresponds to the Köppen climate classification categories Aw (for a dry "winter") and As (for a dry "summer").
One attendee observed that, "In Thailand, we receive around 754,000 million m 3 of rain per year. That is more than enough for the annual water demand of around 100,000 million m 3.... However, only 5.7 percent of rainfall, 70,370 million m 3, empties into the reservoirs." [1] [2]