Shenzhen is situated in the subtropical part of China, located at about the Tropic of Cancer, yet due to the Siberian anticyclone, has a warm, monsoon-influenced, humid subtropical climate (Köppen Cwa). Winters are mild and relatively dry, due in part to the influence of the South China Sea, and frost is very rare. Spring begins somewhat dry, but rainfall begins to dramatically increase in April, and the rainy season lasts until early to mid October. The monsoon reaches its peak intensity in the summer months, when the city also experiences very humid, and hot, but moderated, conditions. The region is prone to torrential rain as well, with 10 days that have 50 millimetres (1.97 in) or more of rain. The latter portion of autumn is dry. The annual precipitation averages at over 1,900 millimetres (75 in), some of which is delivered in typhoons that strike from the east during summer and early autumn
