Region Dry season (winter & Summer) Rainy Season North 23.2 76.8 Ping River Basin (N. Thailand) 15.3 84.7 Northeast 20.8 79.1 Central 25.9 74.4 East 23.6 76.4 South East 58.7 41.2 South West 30.5 69.6

Table 3: Comparison of seasonal rainfall distribution (%) in Thailand and Ping Basin.