Isesaki 伊勢崎市 | |
|---|---|
 Isesaki city hall | |
 Flag  Seal | |
 Location of Isesaki in Gunma Prefecture | |
  Isesaki | |
| Coordinates:36°18′40.9″N139°11′48.5″E / 36.311361°N 139.196806°E /36.311361; 139.196806 | |
| Country | Japan |
| Region | Kantō |
| Prefecture | Gunma |
| First official recorded | 535 AD |
| City settled | September 13, 1940 |
| Government | |
| • Mayor | Yasuo Hiji (from June 2021) |
| Area | |
• Total | 139.44 km2 (53.84 sq mi) |
| Population (September 2020) | |
• Total | 213,303 |
| • Density | 1,529.7/km2 (3,961.9/sq mi) |
| Time zone | UTC+9 (Japan Standard Time) |
| Phone number | 0270-24-5111 |
| Address | 2-410 Imaizumi-chō, Isesaki-shi, Gunma-ken 372-8501 |
| Climate | Cfa |
| Website | Official website |
| Symbols | |
| Flower | Azalea,Salvia splendens,Chrysanthemum,Narcissus |
| Tree | Pine |
Isesaki (伊勢崎市,Isesaki-shi) is acity located inGunma Prefecture,Japan. As of 1 September 2020[update], the city had an estimatedpopulation of 213,303 in 91,789 households,[1] and apopulation density of 1500 persons per km2. The total area of the city is 139.44 square kilometres (53.84 sq mi).
Isesaki is located in the northwestern part of theKantō Plain of southernGunma Prefecture. It is adjacent to Saitama Prefecture across theTone River, which runs through the southern part of the city. The distance to the center of the city is about 15 kilometres (9.3 mi) from Maebashi City, the prefectural capital of Gunma, 20 kilometres (12 mi) fromTakasaki, and about 95 kilometres (59 mi) from centralTokyo.
Isesaki has ahumid subtropical climate (KöppenCfa) characterized by warm summers and cold winters with heavy snowfall. The average annual temperature in Isesaki is 14.5 °C. The average annual rainfall is 1256 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.6 °C, and lowest in January, at around 3.3 °C.[2] On August 5th 2025, Isesaki recorded a temperature of 41.8°C, the hottest temperature ever registered in Japanese history.[3][4][5]
| Climate data for Isesaki (1998−2020 normals, extremes 1998−present) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 18.6 (65.5) | 23.8 (74.8) | 26.3 (79.3) | 31.5 (88.7) | 36.0 (96.8) | 40.2 (104.4) | 40.3 (104.5) | 41.8 (107.2) | 39.0 (102.2) | 33.5 (92.3) | 27.9 (82.2) | 25.4 (77.7) | 41.8 (107.2) |
| Mean daily maximum °C (°F) | 9.4 (48.9) | 10.4 (50.7) | 14.0 (57.2) | 19.6 (67.3) | 24.9 (76.8) | 27.6 (81.7) | 31.2 (88.2) | 32.5 (90.5) | 28.2 (82.8) | 22.3 (72.1) | 16.8 (62.2) | 11.8 (53.2) | 20.7 (69.3) |
| Daily mean °C (°F) | 4.1 (39.4) | 4.9 (40.8) | 8.4 (47.1) | 13.7 (56.7) | 19.1 (66.4) | 22.6 (72.7) | 26.3 (79.3) | 27.4 (81.3) | 23.5 (74.3) | 17.6 (63.7) | 11.6 (52.9) | 6.3 (43.3) | 15.5 (59.8) |
| Mean daily minimum °C (°F) | −0.6 (30.9) | 0.0 (32.0) | 3.1 (37.6) | 8.2 (46.8) | 13.9 (57.0) | 18.5 (65.3) | 22.4 (72.3) | 23.5 (74.3) | 19.8 (67.6) | 13.6 (56.5) | 6.8 (44.2) | 1.5 (34.7) | 10.9 (51.6) |
| Record low °C (°F) | −6.8 (19.8) | −5.6 (21.9) | −4.2 (24.4) | −0.6 (30.9) | 5.6 (42.1) | 11.6 (52.9) | 16.5 (61.7) | 16.5 (61.7) | 9.3 (48.7) | 3.1 (37.6) | −2.5 (27.5) | −5.6 (21.9) | −6.8 (19.8) |
| Averageprecipitation mm (inches) | 28.8 (1.13) | 25.3 (1.00) | 49.8 (1.96) | 73.5 (2.89) | 99.3 (3.91) | 139.9 (5.51) | 190.4 (7.50) | 169.9 (6.69) | 184.4 (7.26) | 149.7 (5.89) | 43.0 (1.69) | 27.1 (1.07) | 1,176.5 (46.32) |
| Average precipitation days(≥ 1.0 mm) | 2.9 | 3.6 | 6.6 | 7.8 | 9.4 | 11.7 | 14.3 | 10.8 | 11.5 | 8.8 | 5.3 | 3.7 | 96.4 |
| Mean monthlysunshine hours | 217.9 | 201.0 | 211.3 | 205.8 | 201.9 | 140.7 | 149.5 | 169.5 | 138.6 | 153.4 | 177.1 | 203.3 | 2,177 |
| Source:Japan Meteorological Agency[6][7] | |||||||||||||
Per Japanese census data,[8] the population of Isesaki has increased steadily over the past 60 years.
| Year | Pop. | ±% |
|---|---|---|
| 1960 | 130,555 | — |
| 1970 | 137,118 | +5.0% |
| 1980 | 159,069 | +16.0% |
| 1990 | 175,254 | +10.2% |
| 2000 | 194,393 | +10.9% |
| 2010 | 207,199 | +6.6% |
| 2020 | 211,850 | +2.2% |
Isesaki developed during theSengoku period as acastle town surrounding Akaishi Castle, a stronghold in southernKōzuke Province controlled by the Yura clan. During theEdo period, it was the center ofIsesaki Domain, afeudal domain under theTokugawa shogunate controlled by theSakai clan. The area also contained twopost towns on theNikkō Reiheishi Kaidō, a subroute toNikkō Kaidō which connected theNakasendō directly with Nikkō, bypassingEdo.[9][10]
Isesaki Town was created withinSai District, Gunma Prefecture on April 1, 1889 with the creation of the modern municipalities system after theMeiji Restoration. Sai District andNawa District merged to formSawa District in 1896. It merged with the villages of Uehasu and Moro to form the city of Isesaki on September 13, 1940. On January 10, 1955 the village of Misato was annexed by Isesaki, followed by the villages of Nawa, Toyouke and Miyagō on March 25 of the same year.
On January 1, 2005 the towns ofAkabori andSakai, and village of Azuma were incorporated into Isesaki. On April 1, 2007, Isesaki was proclaimed aspecial city (tokureishi) with increased autonomy.
Isesaki has amayor-council form of government with a directly elected mayor and aunicameral city council of 29 members. Isesaki contributes five members to the Gunma Prefectural Assembly. In terms of national politics, the city is part of theGunma 2nd district of thelower house of theDiet of Japan.
Isesaki (along with neighboringKiryū) was traditionally famous forsericulture since ancient times, with a cloth called "Isesaki Meisen" as one of its most famous products. This cloth has been made since the late 17th century, and became popular during theMeiji andTaishō periods. Now, however, due to the ubiquity of Western-style clothes, its popularity is decreasing.
Theautomotive equipment andelectrical equipment manufacturing companySanden Corporation is headquartered in Isesaki.[11] Also the city is home toMeisei Electric, acommunications andelectronics equipment andelectric measuring instruments manufacturing company.[12] Largeindustrial parks have been built in the suburbs, making it one of the leading industrial cities in the northern Kantō region.
It is also the location ofJ-List, a retailer of anime goods, visual novels and related products from Japan.
Isesaki has 22 public elementary schools and 12 public middle schools operated by the city government, and five public high schools operated by the Gunma Prefectural Board of Education. Then prefecture also operates three special education schools for the handicapped.
Isesaki has a Peruvian international school (ペルー学校),Colegio Hispano Americano de Gunma.[13][14]
Tobu Railway –Tobu Isesaki Line
Kita-Kantō Expressway – Isesaki Interchange, Hashie Parking Area
National Route 17
National Route 50
National Route 354
National Route 462
Teradomari, Niigata, Japan, friendship city since 1986
Springfield, Missouri, United States, since 1986[15]
Ma'anshan,Anhui, China, friendship city since 1989Japan recorded its highest-ever temperature of 41.8 degrees Celsius…Readings in the eastern city of Isesaki, in Gunma prefecture, surpassed the previous high of 41.2 C marked last week in the western city of Tamba in Hyogo prefecture, the country's meteorological agency said.
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