Land boundaries: total: 381 km border countries: Malaysia 381 km

Coastline:
161 km

Maritime claims:
exclusive economic zone: 200 NM or to median line
territorial sea: 12 NM

Climate:
tropical; hot, humid, rainy

Terrain:
flat coastal plain rises to mountains in east; hilly lowland in west

Elevation extremes: lowest point: South China Sea 0 m highest point: Bukit Pagon 1,850 m

Natural resources: petroleum, natural gas, timber

Land use: arable land: 0.57% permanent crops: 0.76% other: 98.67% (1998 est.)

Irrigated land:
10 sq km (1998 est.)

Natural hazards:
typhoons, earthquakes, and severe flooding are rare