# Sansui County

Sansui County (simplified Chinese: 三穗县; traditional Chinese: 三穗縣; pinyin: Sānsuì Xiàn) 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.

## Administrative divisions

Sansui County is divided into seven towns and two townships:

### Towns

* Bagong 八弓镇
* Tailie 台烈镇
* Wazhai 瓦寨镇
* Tonglin 桐林镇
* Xuedong 雪洞镇
* Changji 长吉镇
* Liangshang 良上镇

### Townships

* Gunma 滚马乡
* Kuanchang 款场乡

## Geography and climate

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 3.9 °C (39.0 °F) in January to 25.5 °C (77.9 °F) in July, while the annual mean is 15.4 °C (59.7 °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.
Climate data for Sansui, elevation 630 m (2,070 ft), (1991–2020 normals, extremes 1971–present) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 24.7 (76.5) | 31.0 (87.8) | 34.0 (93.2) | 34.4 (93.9) | 33.8 (92.8) | 35.5 (95.9) | 36.7 (98.1) | 38.6 (101.5) | 36.1 (97.0) | 34.0 (93.2) | 30.3 (86.5) | 25.2 (77.4) | 38.6 (101.5) |
| Mean daily maximum °C (°F) | 7.4 (45.3) | 10.4 (50.7) | 15.0 (59.0) | 21.1 (70.0) | 25.0 (77.0) | 27.8 (82.0) | 30.6 (87.1) | 30.4 (86.7) | 26.6 (79.9) | 20.8 (69.4) | 16.0 (60.8) | 10.1 (50.2) | 20.1 (68.2) |
| Daily mean °C (°F) | 3.9 (39.0) | 6.3 (43.3) | 10.3 (50.5) | 15.9 (60.6) | 20.0 (68.0) | 23.3 (73.9) | 25.5 (77.9) | 24.8 (76.6) | 21.2 (70.2) | 16.1 (61.0) | 11.1 (52.0) | 6.0 (42.8) | 15.4 (59.7) |
| Mean daily minimum °C (°F) | 1.7 (35.1) | 3.6 (38.5) | 7.3 (45.1) | 12.4 (54.3) | 16.5 (61.7) | 20.2 (68.4) | 21.8 (71.2) | 21.1 (70.0) | 17.6 (63.7) | 13.1 (55.6) | 8.1 (46.6) | 3.2 (37.8) | 12.2 (54.0) |
| Record low °C (°F) | −13.1 (8.4) | −10.6 (12.9) | −3.7 (25.3) | 0.5 (32.9) | 5.0 (41.0) | 11.6 (52.9) | 12.8 (55.0) | 14.2 (57.6) | 6.8 (44.2) | 1.6 (34.9) | −2.5 (27.5) | −6.3 (20.7) | −13.1 (8.4) |
| Average precipitation mm (inches) | 36.7 (1.44) | 37.9 (1.49) | 77.1 (3.04) | 113.0 (4.45) | 161.8 (6.37) | 176.3 (6.94) | 152.5 (6.00) | 127.6 (5.02) | 85.6 (3.37) | 82.9 (3.26) | 54.0 (2.13) | 32.2 (1.27) | 1,137.6 (44.78) |
| Average precipitation days (≥ 0.1 mm) | 14.4 | 13.7 | 17.6 | 16.8 | 17.4 | 16.0 | 13.1 | 12.7 | 11.5 | 13.4 | 11.6 | 11.6 | 169.8 |
| Average snowy days | 5.4 | 3.3 | 0.8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 2.0 | 11.7 |
| Average relative humidity (%) | 82 | 82 | 83 | 82 | 82 | 83 | 80 | 81 | 82 | 84 | 83 | 80 | 82 |
| Mean monthly sunshine hours | 37.5 | 46.0 | 64.3 | 91.3 | 108.7 | 103.4 | 175.8 | 174.6 | 120.6 | 86.5 | 79.5 | 59.4 | 1,147.6 |
| Percent possible sunshine | 11 | 15 | 17 | 24 | 26 | 25 | 42 | 44 | 33 | 24 | 25 | 18 | 25 |
| Source 1: China Meteorological Administration all-time extreme temperature ||||||||||||||
| Source 2: Weather China ||||||||||||||

## Transportation

The county has one railway station, Sansui railway station.
The Three Arch Bridge (Longting Bridge) collapsed on 8 August 2024.