ŌbuŌbu Ōbu 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 . The average annual rainfall is with October as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around . Demographics. Per Japanese census data, the population of Ōbu has been increasing steadily over the past 70 years . 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. Economy. Tertiary sector of the economy. Commerce. Ōbu has a mixed economic base due to its proximity to the Nagoya metropolis and numerous transportation connections. Ōbu 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