Ōtsuki, Yamanashi

Ōtsuki (大月市, Ōtsuki-shi) is a city located in Yamanashi Prefecture, Japan. As of 1 October 2023, the city had an estimated population of 21,835 in 10207 households,[1] and a population density of 86 persons per km2. The total area of the city is 380.25 square kilometres (146.82 sq mi).

Ōtsuki
大月市
Panoramic view of Ōtsuki City, from Mount Iwadono
Panoramic view of Ōtsuki City, from Mount Iwadono
Flag of Ōtsuki
Official seal of Ōtsuki
Location of Ōtsuki in Yamanashi Prefecture
Location of Ōtsuki in Yamanashi Prefecture
Ōtsuki is located in Japan
Ōtsuki
Ōtsuki
 
Coordinates: 35°36′38″N 138°56′24″E
CountryJapan
RegionChūbu (Tōkai)
PrefectureYamanashi
Government
  MayorNobuyasu Kobayashi (from August 2019)
Area
  Total280.25 km2 (108.21 sq mi)
Population
 (October 1, 2023)
  Total21,835
  Density78/km2 (200/sq mi)
Time zoneUTC+9 (Japan Standard Time)
Phone number0554-22-2111
Address2-6-20 Ōtsuki, Ōtsuki-shi, Yamanashi-ken 401-8601
ClimateCfa
WebsiteOfficial website
Symbols
FlowerLilium auratum
TreeYaezakura (Prunus lannesiana)
Ōtsuki City Hall
Ōtsuki city center area

Geography

Ōtsuki is located in eastern Yamanashi Prefecture, approximately 80 kilometers from Tokyo. the city is located in the Chichibu and the Tanzawa Mountains and the Sagami River (known locally as the Katsura River) flows through the city.

Surrounding municipalities

Yamanashi Prefecture

Climate

The city has a climate characterized by hot and humid summers, and relatively mild winters (Köppen climate classification Cfa). The average annual temperature in Ōtsuki is 11.2 °C. The average annual rainfall is 1523 mm with September as the wettest month. The temperatures are highest on average in August, at around 23.5 °C, and lowest in January, at around -0.5 °C.[2]

Climate data for Ōtsuki (1991−2020 normals, extremes 1977−present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 21.0
(69.8)
24.5
(76.1)
27.4
(81.3)
32.8
(91.0)
35.4
(95.7)
37.1
(98.8)
39.9
(103.8)
38.2
(100.8)
37.2
(99.0)
33.7
(92.7)
26.1
(79.0)
24.6
(76.3)
39.9
(103.8)
Average high °C (°F) 8.6
(47.5)
9.8
(49.6)
13.3
(55.9)
19.0
(66.2)
23.6
(74.5)
25.9
(78.6)
30.0
(86.0)
31.0
(87.8)
26.5
(79.7)
20.6
(69.1)
15.8
(60.4)
11.0
(51.8)
19.6
(67.3)
Daily mean °C (°F) 1.8
(35.2)
3.0
(37.4)
6.7
(44.1)
12.1
(53.8)
16.9
(62.4)
20.4
(68.7)
24.2
(75.6)
25.0
(77.0)
21.1
(70.0)
15.2
(59.4)
9.3
(48.7)
4.1
(39.4)
13.3
(56.0)
Average low °C (°F) −3.3
(26.1)
−2.4
(27.7)
1.0
(33.8)
5.9
(42.6)
11.1
(52.0)
16.0
(60.8)
20.0
(68.0)
20.7
(69.3)
17.1
(62.8)
11.0
(51.8)
4.3
(39.7)
−1.0
(30.2)
8.4
(47.1)
Record low °C (°F) −11.6
(11.1)
−12.8
(9.0)
−8.9
(16.0)
−3.9
(25.0)
0.4
(32.7)
7.3
(45.1)
12.6
(54.7)
12.8
(55.0)
5.5
(41.9)
−0.2
(31.6)
−4.1
(24.6)
−8.5
(16.7)
−12.8
(9.0)
Average precipitation mm (inches) 52.2
(2.06)
45.3
(1.78)
89.9
(3.54)
87.7
(3.45)
101.5
(4.00)
143.6
(5.65)
179.3
(7.06)
179.3
(7.06)
238.4
(9.39)
204.8
(8.06)
68.8
(2.71)
43.6
(1.72)
1,434.3
(56.47)
Average precipitation days (≥ 1.0 mm) 4.7 5.1 9.3 8.7 9.5 12.1 12.7 10.5 11.8 10.1 6.7 4.5 105.7
Mean monthly sunshine hours 202.1 188.3 188.5 189.9 194.4 137.1 157.8 188.4 133.1 139.7 163.0 181.6 2,080
Source: Japan Meteorological Agency[3][4]

Demographics

Per Japanese census data,[5] the population of Ōtsuki has declined at an accelerating rate in recent decades.

Historical population
YearPop.±%
1940 31,830    
1950 41,650+30.9%
1960 39,783−4.5%
1970 36,858−7.4%
1980 35,404−3.9%
1990 34,941−1.3%
2000 33,124−5.2%
2010 28,120−15.1%
2020 22,512−19.9%

History

Located in the headwaters of the Sagami River, the area around present-day Ōtsuki was heavily settled in the Jōmon period, and over 80 Jōmon sites have been found within city limits. However, there are fewer Yayoi period sites. During the Nara period ritsuryo organization of Kai Province, the area came under Tsuru County. From the middle of the Kamakura period, much of the province came under the control of the Takeda clan.

During the Edo period, all of Kai Province was tenryō territory under direct control of the Tokugawa shogunate, although the portion around modern day Ōtsuki was part of the short-lived Tamimura Domain, which was suppressed in 1704. Also during the Edo period, the Kōshū Kaidō, one of the Edo Five Routes, passed through Ōtsuki, which with 12 of the 45 post stations has more post stations than any other municipality in Japan. The eleven post stations spread from Shimotorisawa-shuku to Kuronoda-shuku.

During the cadastral reform of the early Meiji period on July 1, 1889, the village of Hirosato was created within Kitatsuru District, Yamanashi Prefecture. On April 1, 1933, the village was raised to town status, and renamed Ōtsuki. The town was bombed by the United States on August 13, 1945, only two days before the end of World War II. The town was elevated to city status on August 8, 1954, by merging with the neighboring towns of Saruhashi and Nanaho and the villages of Sasago, Nigioka, Hatsukari and Yanagawa.

Government

Ōtsuki has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 12 members.

Economy

Ōtsuki was noted traditionally for its production of fine silk. In the modern period, it became the location of numerous factories producing synthetic fibers.

Education

  • Ohtsuki City College
  • Ōtsuki has five public elementary schools and two public middle schools operated by the city government and two public high schools operated by the Yamanashi Prefectural Board of Education.

Transportation

Railway

Highway

Sister city relations

Local attractions

  • Saruhashi - A famous historical bridge and designated National Place of Scenic Beauty
  • Yatsuzawa Power Station

Notable people

References

  1. "Ōtsuki City official statistics". www.city.otsuki.yamanashi.jp. Retrieved 2023-10-13.
  2. "Otsuki climate: Temperature Otsuki & Weather By Month". en.climate-data.org. Retrieved 2023-10-13.
  3. 観測史上1~10位の値(年間を通じての値). JMA. Retrieved March 4, 2022.
  4. 気象庁 / 平年値(年・月ごとの値). JMA. Retrieved March 4, 2022.
  5. Ōtsuki population statistics
  6. "International Exchange". List of Affiliation Partners within Prefectures. Council of Local Authorities for International Relations (CLAIR). Retrieved 21 November 2015.
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