Sukumo, Kōchi

Sukumo (宿毛市, Sukumo-shi) is a city located in Kōchi Prefecture, Japan. The city was founded on March 31, 1954. As of 1 February 2021, the city has an estimated population of 21,097, with 10,234 households[1] and a population density of 74 persons per km2 (191.7 persons per square mile). The total area is 286.11 square kilometres (110.47 sq mi).

Sukumo
宿毛市
City
Flag
Chapter
Location of Sukumo in Kōchi Prefecture
Sukumo
Location in Japan
Coordinates: 32°56′N 132°43′E
CountryJapan
RegionShikoku
PrefectureKōchi Prefecture
Government
 • MayorToshio Okimoto
Area
 • Total286.11 km2 (110.47 sq mi)
Population
 (1 February 2021)
 • Total21,097
 • Density74/km2 (190/sq mi)
Time zoneUTC+09:00 (JST)
City hall address2-1 Sakura, Sukumo-shi, Kochi-ken
788-8686
ClimateCfa
Websitehttp://www.city.sukumo.kochi.jp
Symbols
BirdZosterops japonicus
FlowerOrchidaceae
TreeCinnamomum camphora

Geography

Climate

Sukumo has a humid subtropical climate (Köppen climate classification Cfa) with hot, humid summers and cool winters. There is significant precipitation throughout the year, especially during June and July. The average annual temperature in Sukumo is 17.2 °C (63.0 °F). The average annual rainfall is 2,093.1 mm (82.41 in) with June as the wettest month. The temperatures are highest on average in August, at around 27.4 °C (81.3 °F), and lowest in January, at around 7.4 °C (45.3 °F).[2] The highest temperature ever recorded in Sukumo was 39.5 °C (103.1 °F) on 15 August 2020; the coldest temperature ever recorded was −5.3 °C (22.5 °F) on 27 February 1981.[3]

Climate data for Sukumo (1991−2020 normals, extremes 1943−present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 22.4
(72.3)		 22.9
(73.2)		 25.9
(78.6)		 27.8
(82.0)		 32.7
(90.9)		 33.1
(91.6)		 37.3
(99.1)		 39.5
(103.1)		 35.9
(96.6)		 31.0
(87.8)		 27.2
(81.0)		 24.3
(75.7)		 39.5
(103.1)
Average high °C (°F) 11.6
(52.9)		 12.7
(54.9)		 15.8
(60.4)		 20.1
(68.2)		 23.8
(74.8)		 25.8
(78.4)		 29.7
(85.5)		 31.1
(88.0)		 28.5
(83.3)		 24.2
(75.6)		 19.1
(66.4)		 14.0
(57.2)		 21.4
(70.5)
Daily mean °C (°F) 7.4
(45.3)		 8.2
(46.8)		 11.2
(52.2)		 15.6
(60.1)		 19.5
(67.1)		 22.6
(72.7)		 26.4
(79.5)		 27.4
(81.3)		 24.6
(76.3)		 19.6
(67.3)		 14.5
(58.1)		 9.4
(48.9)		 17.2
(63.0)
Average low °C (°F) 3.3
(37.9)		 3.8
(38.8)		 6.6
(43.9)		 11.0
(51.8)		 15.4
(59.7)		 19.6
(67.3)		 23.7
(74.7)		 24.4
(75.9)		 21.3
(70.3)		 15.7
(60.3)		 10.3
(50.5)		 5.3
(41.5)		 13.4
(56.0)
Record low °C (°F) −5.0
(23.0)		 −5.3
(22.5)		 −3.7
(25.3)		 −0.2
(31.6)		 5.0
(41.0)		 11.3
(52.3)		 15.7
(60.3)		 16.3
(61.3)		 10.0
(50.0)		 4.5
(40.1)		 −0.1
(31.8)		 −3.3
(26.1)		 −5.3
(22.5)
Average precipitation mm (inches) 65.1
(2.56)		 90.4
(3.56)		 135.9
(5.35)		 157.0
(6.18)		 194.6
(7.66)		 328.6
(12.94)		 275.1
(10.83)		 245.3
(9.66)		 254.3
(10.01)		 168.3
(6.63)		 102.2
(4.02)		 76.3
(3.00)		 2,093.1
(82.41)
Average snowfall cm (inches) 2
(0.8)		 2
(0.8)		 0
(0)		 0
(0)		 0
(0)		 0
(0)		 0
(0)		 0
(0)		 0
(0)		 0
(0)		 0
(0)		 trace 4
(1.6)
Average precipitation days (≥ 1.0 mm) 7.2 8.2 10.7 9.4 9.2 13.7 10.8 9.6 11.3 7.8 7.2 6.8 111.9
Average snowy days (≥ 1 cm) 0.5 0.5 0 0 0 0 0 0 0 0 0 0.1 1.1
Average relative humidity (%) 63 63 65 67 72 80 80 78 77 73 70 66 71
Mean monthly sunshine hours 155.8 159.8 184.5 194.4 194.8 134.4 196.6 221.0 173.3 182.2 163.1 153.5 2,115.5
Source: Japan Meteorological Agency[3][2]

Demographics

Per Japanese census data, the population of Sukumo in 2020 is 19,033 people.[4] Sukumo has been conducting censuses since 1920.

Historical population
YearPop.±%
1920 21,484—    
1925 21,895+1.9%
1930 22,396+2.3%
1935 22,995+2.7%
1940 23,811+3.5%
1945 30,454+27.9%
1950 31,606+3.8%
1955 31,773+0.5%
1960 30,016−5.5%
1965 26,992−10.1%
1970 25,028−7.3%
1975 25,340+1.2%
1980 26,080+2.9%
1985 26,255+0.7%
1990 25,828−1.6%
1995 25,919+0.4%
2000 25,970+0.2%
2005 24,397−6.1%
2010 22,614−7.3%
2015 20,907−7.5%
2020 19,033−9.0%
Sukumo population statistics[4]
  • City office
  • Sukumo station
  • Stone wall of Sukumo castle
  • Sukumo Credit union
  • Enkō-ji

References
  1. "Official website of Sukumo City" (in Japanese). Japan: Sukumo City. Retrieved 1 May 2017.
  2. 気象庁 / 平年値（年・月ごとの値）. JMA. Retrieved April 18, 2022.
  3. 観測史上1～10位の値（年間を通じての値）. JMA. Retrieved April 18, 2022.
  4. Sukumo population statistics


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