# Ōbu

Ōbu (大府市, Ōbu-shi) is a city located in Aichi Prefecture, Japan. As of 1 October 2019, the city had an estimated population of 92,179 in 39,382 households, and a population density of 2,739 persons per km$^2$. The total area of the city is 33.66 square kilometres (13.00 sq mi). Ōbu has been a member of the World Health Organization’s Alliance for Healthy Cities (AFHC) since June 5, 2000.

## Geography

Ōbu is located in the far northeastern neck of Chita Peninsula in southern Aichi Prefecture, and is bordered by the metropolis of Nagoya to the north.

### 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 Ōbu is 16.6 °C (61.9 °F). The average annual rainfall is 1,506.0 mm (59.29 in) with October as the wettest month. The temperatures are highest on average in August, at around 28.7 °C (83.7 °F), and lowest in January, at around 5.3 °C (41.5 °F).
Climate data for Ōbu (2012−2020 normals, extremes 2012−present) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 18.2 (64.8) | 22.4 (72.3) | 24.8 (76.6) | 28.8 (83.8) | 33.4 (92.1) | 34.3 (93.7) | 38.8 (101.8) | 38.9 (102.0) | 36.9 (98.4) | 31.8 (89.2) | 25.0 (77.0) | 23.8 (74.8) | 38.9 (102.0) |
| Mean daily maximum °C (°F) | 9.5 (49.1) | 10.4 (50.7) | 15.2 (59.4) | 19.8 (67.6) | 25.4 (77.7) | 27.7 (81.9) | 31.5 (88.7) | 33.6 (92.5) | 29.1 (84.4) | 23.6 (74.5) | 17.6 (63.7) | 11.6 (52.9) | 21.2 (70.3) |
| Daily mean °C (°F) | 5.3 (41.5) | 5.9 (42.6) | 10.0 (50.0) | 14.8 (58.6) | 20.0 (68.0) | 23.1 (73.6) | 27.1 (80.8) | 28.7 (83.7) | 24.5 (76.1) | 19.1 (66.4) | 13.0 (55.4) | 7.4 (45.3) | 16.6 (61.8) |
| Mean daily minimum °C (°F) | 1.1 (34.0) | 1.8 (35.2) | 5.2 (41.4) | 9.9 (49.8) | 14.9 (58.8) | 19.3 (66.7) | 23.8 (74.8) | 25.0 (77.0) | 20.9 (69.6) | 15.3 (59.5) | 8.6 (47.5) | 3.2 (37.8) | 12.4 (54.3) |
| Record low °C (°F) | −4.7 (23.5) | −4.3 (24.3) | −1.6 (29.1) | 2.7 (36.9) | 6.2 (43.2) | 12.8 (55.0) | 18.7 (65.7) | 19.5 (67.1) | 12.1 (53.8) | 6.6 (43.9) | −0.6 (30.9) | −3.3 (26.1) | −4.7 (23.5) |
| Average precipitation mm (inches) | 53.3 (2.10) | 56.3 (2.22) | 113.8 (4.48) | 141.1 (5.56) | 128.5 (5.06) | 164.0 (6.46) | 177.9 (7.00) | 141.4 (5.57) | 186.7 (7.35) | 222.7 (8.77) | 61.8 (2.43) | 65.4 (2.57) | 1,506 (59.29) |
| Average precipitation days (≥ 1.0 mm) | 5.6 | 5.8 | 8.6 | 8.6 | 8.3 | 11.3 | 11.0 | 8.3 | 10.5 | 9.6 | 6.4 | 6.8 | 100.8 |
| Mean monthly sunshine hours | 187.1 | 174.6 | 210.0 | 204.3 | 239.4 | 168.6 | 176.1 | 224.7 | 154.8 | 158.1 | 169.1 | 165.5 | 2,234.3 |
| Source: Japan Meteorological Agency ||||||||||||||

### Demographics

Per Japanese census data, the population of Ōbu has been increasing steadily over the past 70 years.

### Neighboring municipalities
#### Aichi Prefecture

* Kariya
* Higashiura
* Nagoya (Midori-ku)
* Tōkai
* Toyoake

## History
### Late modern period

The village of Ōbu was established within Chita District, Aichi on October 1, 1889, with the establishment of the modern municipalities system. On May 1, 1906, Ōbu annexed the neighboring villages of Yoshida, Kyowa, Kitasaka, Yokote, Nagagusa and part of the village of Morioka. It was elevated to town status on November 1, 1915.

### Contemporary history

Ōbu became a city on September 1, 1970.

## Government

Ōbu has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 19 members. The city contributes one member to the Aichi Prefectural Assembly. In terms of national politics, the city is part of Aichi District 7 of the lower house of the Diet of Japan.

## Sister cities

* Port Phillip, Victoria, Australia, since November 20, 1993

## Economy
### Tertiary sector
#### Commerce

Ōbu has a mixed economic base due to its proximity to the Nagoya metropolis and numerous transportation connections.

## Education
### University

* Shigakkan University
* University of Human Environments, Ōbu campus

### Schools

* Ōbu has nine public elementary schools and four public junior high schools operated by the city government, and three public high schools operated by the Aichi Prefectural Board of Education.

## Transportation
### Railways
#### Conventional lines
##### Central Japan Railway Company

* Tōkaidō Main Line: - Ōbu - Kyōwa -
* Taketoyo Line: Ōbu -

### Roads
#### Expressways

* Isewangan Expressway
* Chitahantō Road

#### Japan National Route

* National Route 23
* National Route 155
* National Route 366

## Notable people from Ōbu

* Kumiko Koiwai, figure skater
* Masayoshi Nagata, mathematician
* Takahiro Nakai, Judoka
* Kyoko Takezawa, violinist
* Hidehiko Yoshida, Olympic gold-medalist judoka