Temperature of the coldest month is greater than 18°C. Reddish tones (e.g. Central Africa, Southeast Asia) are areas with no dry season and at least 60 mm of rainfall in the driest month. Areas indicated with blue tones have monsoon-type climates - a short dry season but sufficient moisture to keep ground wet throughout the year. Yellow indicates zones - such as Northeastern Brazil - with a distinct dry season (one month with precipitation less than 60 mm); green represents an isothermal subtype, with an annual range of temperature less than 5°C