Climate: tropical marine; generally warm and humid, moderated by northeast trade winds; dry season from January to June, rainy season from July to December; little seasonal temperature variation
Terrain: volcanic origin, surrounded by coral reefs; relatively flat coralline limestone plateau (source of most fresh water) with steep coastal cliffs and narrow coastal plains in north, low-rising hills in center, mountains in south
Elevation extremes: lowest point: Pacific Ocean 0 m highest point: Mount Lamlam 406 m
Natural resources: fishing (largely undeveloped), tourism (especially from Japan)
Land use: arable land: 11% permanent crops: 11% permanent pastures : 15% forests and woodland: 18% other: 45% (1993 est.)
Irrigated land: NA sq km
Natural hazards: frequent squalls during rainy season; relatively rare, but potentially very destructive typhoons (especially in August)
Environment - current issues: NA
Environment - international agreements: party to: NA signed, but not ratified: NA
Geography - note: largest and southernmost island in the Mariana
Islands archipelago; strategic location in western North Pacific Ocean