Municipality terrain: The city sits in a Himalayan river basin and is surrounded by high mountain ranges.
Average altitude: 3,490 meters (11,450 feet)
Main rivers: Kyi River
City location: 29.39N, 91.07E, in southwestern China
Lhasa’s prefecture population: (2009) 1,100,000
Prefecture area: 30,000 sq km (11,583 sq mi)
Central city area: 544 km2 (210 sq mi)
Urban population: 250,000
City center: the Potala Palace (29.65N, 91.11E), in Chengguan District
Average highest temperature in July: 22.6 °C (72.7 °F)
Average lowest temperature in January: -9.0 °C (15.8 °F)
Semi-arid, high-altitude climate; the annual precipitation is 426 mm (16.8 in). The city is known for lots of sunshine and mild temperatures for such a high altitude. Oxygen levels are about 68% of that at sea level.