Tropical savanna climate or tropical wet and dry climate is a type of climate that corresponds to the Köppen climate classification categories 'Aw' and 'As'.Tropical savanna climates have monthly mean temperatures above 18 °C (64 °F) in every month of the year and typically a pronounced dry season. Tropical savanna climates have monthly mean temperatures above 18 °C (64 °F) in every month of the year and typically a pronounced dry season, with the driest month having less than 60 mm (2.36 inches) of precipitation and also less than 100 − ( T o t a l A n n u a l P r e c i p i t a t i o n ( m m ) 25 ) { extstyle 100-left({frac {Total Annual Precipitation (mm)}{25}} ight)} of precipitation :200–1 Tropical savanna climate or tropical wet and dry climate is a type of climate that corresponds to the Köppen climate classification categories 'Aw' and 'As'.Tropical savanna climates have monthly mean temperatures above 18 °C (64 °F) in every month of the year and typically a pronounced dry season. Tropical savanna climates have monthly mean temperatures above 18 °C (64 °F) in every month of the year and typically a pronounced dry season, with the driest month having less than 60 mm (2.36 inches) of precipitation and also less than 100 − ( T o t a l A n n u a l P r e c i p i t a t i o n ( m m ) 25 ) { extstyle 100-left({frac {Total Annual Precipitation (mm)}{25}} ight)} of precipitation :200–1 This latter fact is in direct contrast to a tropical monsoon climate, whose driest month sees less than 60 mm of precipitation but has more than 100 − ( T o t a l A n n u a l P r e c i p i t a t i o n ( m m ) 25 ) { extstyle 100-left({frac {Total Annual Precipitation (mm)}{25}} ight)} of precipitation. In essence, a tropical savanna climate tends to either see less rainfall than a tropical monsoon climate or have more pronounced dry season(s).