Bangkok has a tropical wet and dry climate under the Köppen climate classification system.
The highest recorded maximum temperature is 40.8 °C (105.4 °F) in May 1983 and the lowest recorded minimum temperature is 9.9 °C (49.8 °F) in January 1955.
The coldest temperatures were recorded in January 1924, January 1955, January 1974 and December 1999.
The hottest year on record was 1997 (average yearly at Don Mueang 30.0 °C) and the coldest was 1975 (average yearly at Don Mueang 26.3 °C).
The coldest daytime maximum temperature was 19.9 °C (68 °F), recorded in December 1992.