III.

Climate

Temperatures as high as 37°C (99°F) occur at midday in the coastal and lowland regions of Java, and the relative humidity often exceeds 80 percent. During the rainy season, from November to April, ocean breezes and frequent thunderstorms have a cooling influence. At elevations above 610 m (2,000 ft) temperate climatic conditions prevail, and temperatures as low as -2°C (27°F) occur at extreme elevations. The mean annual precipitation is about 2,030 mm (about 80 in). Wide regional variations occur, however, with extremes ranging from an annual maximum of about 4,215 mm (about 166 in) at Bogor to an annual minimum of about 890 mm (about 35 in) at Assembagus.