Climate:
tropical; northwest monsoon (December to March), southeast monsoon (May to October); slight seasonal temperature variation
Terrain:
mostly mountains with coastal lowlands and rolling foothills
Elevation extremes:
lowest point: Pacific Ocean 0 m highest point: Mount Wilhelm 4,509 m
Natural resources:
gold, copper, silver, natural gas, timber, oil, fisheries
Land use:
arable land: 0.49% permanent crops: 1.4% other: 98.11% (2005)