Located just south of the Tropic of Cancer, Guangzhou has a humid subtropical climate (Köppen Cfa) influenced by the Asian monsoon. Summers are wet with high temperatures, high humidity and a high heat index. Winters are mild and comparatively dry. Guangzhou has a lengthy monsoon season, spanning from April through September. Monthly averages range from 13.6 °C (56.5 °F) in January to 28.6 °C (83.5 °F) in July, while The annual average temperature in Guangzhou is 22.6 °C (72.7 °F), the relative humidity is approximately 68%, whereas annual rainfall in the metropolitan area is over 1,700 mm (67 in). Extreme temperatures have ranged from 0 °C (32 °F) to 39.1 °C (102 °F). The last recorded snowfall in the city was in January 1893
