Jakarta has a tropical monsoon climate (''Am'') according to the Köppen climate classification system. The wet season in Jakarta covers the majority of the year, running from October through May. The remaining four months (June through September) constitute the city's drier season (each of these four months has an average monthly rainfall of fewer than . Technically speaking, however, only August qualifies as the genuine dry season month, as it has less than  of rainfall. Located in the western part of Java, Jakarta's wet season rainfall peaks in January and February with average monthly rainfall of , and its dry season's low point is in August with a monthly average of .