page_title: Sansui County
section_title: Geography and climate
hierarchical_section_title: Sansui County / Geography and climate
caption_attribution_description: English: China AMS Topographic Maps
context_page_description: Sansui County is a county in eastern Guizhou province, China, bordering Hunan province to the east. It is under the administration of the Qiandongnan Miao and Dong Autonomous Prefecture and is one of the province's eastern gateways.
context_section_description: Sansui County is located in the east of Guizhou and the northeast of Qiandongnan Prefecture 247 kilometres (153 mi) away from the provincial capital of Guiyang and 87 kilometres (54 mi) away from the prefecture seat of Kaili. It ranges in latitude from 26° 47' to 27° 04' N and in longitude from 108° 32' to 109° 04' E, spanning a total area of 1,035.8 square kilometres (399.9 sq mi). Bordering counties are Xinhuang (Hunan) to the northeast, Tianzhu and Jianhe to the southeast and southwest, and Zhenyuan to the north. The county is part of the Yuan River watershed, and there is a total of 776 kilometres (482 mi) of rivers within its borders.
  Sansui has a monsoon-influenced humid subtropical climate (Köppen Cfa), with chilly, damp winters, and hot, humid summers. The monthly daily average temperature ranges from 3.8 °C (38.8 °F) in January to 25.3 °C (77.5 °F) in July, while the annual mean is 15.13 °C (59.23 °F). More than half of the annual rainfall occurs from May to August, while the annual frost-free period typically lasts 290 to 300 days.
caption: Map including Sansui (labeled as SAN-SUI (CHIUNG-SHUI) 三穗 (邛水)) (AMS, 1954)
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