Statistical Yearbook Thailand 2013

Meteorology Statistics Meteorology statistics presented in this chapter have been derived from the Meteorological Department, Ministry of Information and Communication Technology. Meteorology Its statistics presented the data about temperature, rainfall, elevation of station above mean sea-level, atmospheric pressure and relative humidity. For the matter of mean temperature, it was computed form the data on dry temperature observation. In general, Thailand’s climate can be divided into three seasons as follow: 1. Hot season, it lasts from mid - February to mid - May. Considering its temperature, which ranges from 35.0 O C to 39.9 O C , it was regarded as daily hot. The highest temperature, sometime was over 40.0 O C . 2. Rainy season, it lasts from mid - May to mid - October. At this period, it might be scarcity of rain sometime. Considering the volume of rain in 24 hours starting at 7 a.m. till 7 a.m. of the next day, there normally variety of rain volume, as follows: an un-measurable rain as its volume lower than 0.1 millimeter; a few rain as its volume between 0.1 millimeter and 10.0 millimeter; a moderate rain as its volume between 10.1 millimeter and 35.0 millimeter; a heavy rain as its volume between 35.1 millimeter and 90.0 millimeter and a very heavy rain as its volume upper than 90.1 millimeter. 3. Cool season, it lasts from mid - October to mid - February. Considering daily temperature the coolest climate was lower 8.0 O C . The cool climate, the temperature ranged from 8.0 O C . to 15.9 O C and the moderate cool climate, the temperature ranged from 16.0 O C to 22.9 O C .