# Shengsi County

Shengsi County is a county in the northeast of Zhejiang province in China consisting of an archipelago islands located to the east of Hangzhou Bay. It is under the administration of Zhoushan City and is the easternmost county-level division in the province. The islands of Greater and Lesser Yangshan are connected with Shanghai's Pudong New Area by the Donghai Bridge and their port forms part of the Port of Shanghai. They are, however, not counted among the islands of Shanghai.
The county consists of 630 islands and islets, of which 13 have more than 100 inhabitants.

## Administrative divisions

Towns:
* Caiyuan (菜园镇), Shengshan (嵊山镇), Yangshan (洋山镇)
Townships:
* Wulong Township (五龙乡), Huanglong Township (黄龙乡), Gouqi Township (枸杞乡), Huadao Township (花鸟乡)

## Climate

Climate data for Shengsi, elevation 80 m (260 ft), (1991–2020 normals, extremes 1981–present) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 22.2 (72.0) | 25.9 (78.6) | 27.0 (80.6) | 29.8 (85.6) | 30.3 (86.5) | 34.3 (93.7) | 36.3 (97.3) | 37.4 (99.3) | 35.1 (95.2) | 32.4 (90.3) | 26.1 (79.0) | 21.9 (71.4) | 37.4 (99.3) |
| Mean daily maximum °C (°F) | 8.5 (47.3) | 9.6 (49.3) | 12.7 (54.9) | 17.4 (63.3) | 21.9 (71.4) | 25.2 (77.4) | 29.6 (85.3) | 29.9 (85.8) | 26.7 (80.1) | 22.3 (72.1) | 17.5 (63.5) | 11.5 (52.7) | 19.4 (66.9) |
| Daily mean °C (°F) | 6.1 (43.0) | 6.8 (44.2) | 9.7 (49.5) | 14.1 (57.4) | 18.9 (66.0) | 22.5 (72.5) | 26.6 (79.9) | 27.1 (80.8) | 24.3 (75.7) | 20.0 (68.0) | 15.1 (59.2) | 9.1 (48.4) | 16.7 (62.1) |
| Mean daily minimum °C (°F) | 4.1 (39.4) | 4.7 (40.5) | 7.4 (45.3) | 11.7 (53.1) | 16.6 (61.9) | 20.6 (69.1) | 24.5 (76.1) | 25.1 (77.2) | 22.5 (72.5) | 18.2 (64.8) | 13.1 (55.6) | 7.0 (44.6) | 14.6 (58.3) |
| Record low °C (°F) | −6.6 (20.1) | −3.0 (26.6) | −2.5 (27.5) | 3.7 (38.7) | 8.1 (46.6) | 12.7 (54.9) | 17.0 (62.6) | 18.9 (66.0) | 15.0 (59.0) | 8.1 (46.6) | 0.8 (33.4) | −5.7 (21.7) | −6.6 (20.1) |
| Average precipitation mm (inches) | 65.3 (2.57) | 67.4 (2.65) | 103.3 (4.07) | 90.3 (3.56) | 95.1 (3.74) | 202.2 (7.96) | 106.5 (4.19) | 128.4 (5.06) | 86.5 (3.41) | 84.5 (3.33) | 62.9 (2.48) | 62.5 (2.46) | 1,154.9 (45.48) |
| Average precipitation days (≥ 0.1 mm) | 10.9 | 10.2 | 13.5 | 12.4 | 12.0 | 14.9 | 8.6 | 9.5 | 9.5 | 7.6 | 9.7 | 9.1 | 127.9 |
| Average snowy days | 2.4 | 2.0 | 0.6 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.8 | 5.9 |
| Average relative humidity (%) | 74 | 76 | 78 | 79 | 82 | 88 | 86 | 85 | 80 | 72 | 72 | 71 | 79 |
| Mean monthly sunshine hours | 115.8 | 118.3 | 144.9 | 164.4 | 176.2 | 130.9 | 231.9 | 238.9 | 189.5 | 179.8 | 135.8 | 133.4 | 1,959.8 |
| Percent possible sunshine | 36 | 38 | 39 | 42 | 42 | 31 | 54 | 59 | 52 | 51 | 43 | 42 | 44 |
| Source: China Meteorological Administration all-time extreme temperatureNOAA ||||||||||||||
Climate data for Xiaoyangshan Island, elevation 54 m (177 ft), (1991–2020 normals) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Mean daily maximum °C (°F) | 8.0 (46.4) | 9.4 (48.9) | 13.2 (55.8) | 17.8 (64.0) | 22.8 (73.0) | 25.6 (78.1) | 30.6 (87.1) | 31.0 (87.8) | 27.0 (80.6) | 22.6 (72.7) | 17.5 (63.5) | 11.1 (52.0) | 19.7 (67.5) |
| Daily mean °C (°F) | 5.9 (42.6) | 6.9 (44.4) | 10.2 (50.4) | 14.7 (58.5) | 19.8 (67.6) | 23.1 (73.6) | 27.6 (81.7) | 28.2 (82.8) | 24.7 (76.5) | 20.5 (68.9) | 15.3 (59.5) | 8.8 (47.8) | 17.1 (62.9) |
| Mean daily minimum °C (°F) | 4.2 (39.6) | 4.9 (40.8) | 8.0 (46.4) | 12.4 (54.3) | 17.6 (63.7) | 21.3 (70.3) | 25.5 (77.9) | 26.2 (79.2) | 23.0 (73.4) | 18.9 (66.0) | 13.6 (56.5) | 7.0 (44.6) | 15.2 (59.4) |
| Average precipitation mm (inches) | 64.1 (2.52) | 77.2 (3.04) | 104.1 (4.10) | 90.8 (3.57) | 95.5 (3.76) | 251.0 (9.88) | 106.6 (4.20) | 118.2 (4.65) | 129.5 (5.10) | 95.8 (3.77) | 69.7 (2.74) | 60.5 (2.38) | 1,263 (49.71) |
| Average precipitation days (≥ 0.1 mm) | 11.1 | 11.3 | 13.0 | 10.5 | 11.0 | 15.3 | 9.5 | 9.1 | 10.5 | 6.3 | 10.3 | 9.2 | 127.1 |
| Average snowy days | 2.1 | 1.5 | 0.3 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 5 |
| Average relative humidity (%) | 74 | 77 | 76 | 77 | 79 | 87 | 82 | 81 | 78 | 71 | 72 | 70 | 77 |
| Mean monthly sunshine hours | 114.4 | 110.7 | 152.7 | 174.4 | 183.3 | 122.5 | 230.6 | 247.2 | 174.8 | 172.0 | 131.7 | 141.4 | 1,955.7 |
| Percent possible sunshine | 36 | 35 | 41 | 45 | 43 | 29 | 54 | 61 | 48 | 49 | 42 | 45 | 44 |
| Source: China Meteorological Administration ||||||||||||||