Wuzhou (Chinese: 梧州; pinyin: Wúzhōu; Jyutping: Ng⁴zau¹, postal: Wuchow; Zhuang: Ngouzcouh / Ŋouƨcouƅ), formerly Ngchow, is a prefecture-level city in the east of Guangxi Zhuang Autonomous Region, People's Republic of China. Wuzhou is located in eastern Guangxi bordering Guangdong province. It is at the confluence of the Gui River and the Xun River where they form the Xi River; 85% of all water in Guangxi flows through Wuzhou.[3] The total area of Wuzhou is 12,588 km2 (4,860 sq mi). The Tropic of Cancer bisects the city. Despite its latitude, Wuzhou has a monsoon-influenced humid subtropical climate (Köppen Cfa), with short, mild winters, and long, very hot and humid summers. Winter begins dry but becomes progressively wetter and cloudier. Spring is generally overcast and often rainy, while summer continues to be rainy though is the sunniest time of year. Autumn is sunny and dry. The monthly 24-hour average temperature ranges from 12.2 °C (54.0 °F) in January to 28.2 °C (82.8 °F) in July, and the annual mean is 21.24 °C (70.2 °F). The annual rainfall is just above 1,450 mm (57 in), and is delivered in bulk (~47%) from April to June, when the plum rains occur and often create the risk of flooding. With monthly percent possible sunshine ranging from 17% in March to 55% in July, the city receives 1,738 hours of bright sunshine annually. Extreme temperatures have ranged from −3.0 °C (27 °F) to 39.7 °C (103 °F).