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Ōhara, Japan
Chiba · Japan
Ōhara is a small city in Chiba, Japan with a population of 20,226. Elevation: 30 ft (9 m). Average temperature: 60°F (15°C).
Data updated June 2026
Discover Ōhara, Japan
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People
Economy
BHousing
A+Climate
| Population | 20,226 |
| Population Density | 786 / sq mi |
| Elevation | 30 ft (9 m) |
| Coordinates | 35.2476°, 140.3929° |
| Timezone | Asia/Tokyo |
| Country | 🇯🇵 Japan |
| State / Province | Chiba |
| Average Temperature | 60°F (15°C) |
| January Average | 42°F (6°C) |
| July Average | 75°F (24°C) |
| Annual Precipitation | 68.0 inches (1,728 mm) |
| Annual Snowfall | 0.0 inches (0 cm) |
| Median Household Income | $35,400 |
| Median Age | 47.5 years |
About Ōhara
Ōhara is a small city in Japan (Chiba) with a population of 20,226. The city sits at an elevation of 30 feet (9 meters) above sea level. The average annual temperature is 60°F (15°C). Temperatures range from 42°F in January to 75°F in July. Annual precipitation averages 68.0 inches. The timezone is Asia/Tokyo.
Population
Language Spoken at Home
Social Characteristics
Ōhara vs Japan Average
Income: Ōhara vs Japan
Commute Mode
Income
| Median HH Income | $35,400 |
| 53% below Japan avg |
Employment & Poverty
| Unemployment | 2.5% |
| 31% below Japan avg | |
| Establishments (County) | 647 |
Business (County)
Tax & Cost of Living
Commute & Transportation
Walkability
Home Value Sources
Ownership Split
Home Values
| Census Median | $102,000 |
| 64% below Japan avg |
Real Estate Market (Redfin)
Rental Costs
| Census Median Rent | $510 |
| 56% below Japan avg |
Ownership & Property
| Housing Units | 8,090 |
Property Tax
Climate in Ōhara
Ōhara has an average annual temperature of 0°C (32°F). The hottest month is Jan (0°C), the coldest is Jan (0°C). Average annual precipitation is 2114 mm.
Temperature
| Annual Average | 59.7°F |
| 11% above Japan avg | |
| January Average | 42°F (6°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 213 days/yr |
Geography
| Elevation | 30 ft (9 m) |
| Area | 25.7 sq mi (66.6 km²) |
| Population Density | 786/sq mi |
| Coordinates | 35.2476°N, 140.3929°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Tsunami History
20 tsunamis recorded within 500 km. Highest wave on record: 13.0 m (43 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1923 | SAGAMI BAY | Earthquake | 13.0 m | 105,385 | 83 km |
| 1703 | OFF SW BOSO PENINSULA | Earthquake | 11.7 m | 5,233 | 81 km |
| 1677 | OFF SE. BOSO PENINSULA | Earthquake | 8.0 m | 500 | 104 km |
| 1495 | KAMAKURA, SAGAMI BAY, TOKAIDO | Earthquake | 5.0 m | 200 | 83 km |
| 1732 | KUJUKURI BEACH, JAPAN | Earthquake | 2.0 m | - | 37 km |
| 1670 | BOSO, JAPAN | Earthquake | 2.0 m | - | 62 km |
| 1433 | OFF IZU-OSHIMA | Earthquake | 2.0 m | - | 90 km |
| 1980 | HONSHU ISLAND | Earthquake | 0.6 m | - | 121 km |
| 1923 | KASHIMA, JAPAN | Earthquake | 0.4 m | - | 129 km |
| 1978 | TOKAIDO | Earthquake | 0.4 m | 25 | 114 km |
| 1923 | RYUKYU ISLANDS | Earthquake | 0.3 m | - | 43 km |
| 1896 | KASHIMA, JAPAN | Earthquake | 0.3 m | - | 150 km |
| 1990 | JAPAN | Earthquake | 0.2 m | - | 120 km |
| 2000 | HONSHU: S COAST | Earthquake | 0.1 m | - | 146 km |
| 1909 | OFF BOSO PENINSULA | Earthquake | - | - | 131 km |
| 1909 | OFF BOSO PENINSULA | Earthquake | - | - | 131 km |
| 1855 | TOKAIDO | Earthquake | - | 6,757 | 70 km |
| 1782 | ODAWARA, SAGAMI BAY | Eruption + Earthquake | - | - | 65 km |
| 1642 | BOSO, JAPAN | Earthquake | - | - | 20 km |
| 1633 | SAGAMI BAY | Earthquake | - | 150 | 109 km |
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Izu-Oshima (108 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Izu-Oshima | Stratovolcano | 758 m (2,487 ft) | 1990 | 108 km |
| Izu-Tobu | Pyroclastic cone(s) | 1,406 m (4,613 ft) | 1989 | 124 km |
| Hakoneyama | Complex | 1,438 m (4,718 ft) | 2015 | 125 km |
| Toshima | Stratovolcano | 508 m (1,667 ft) | -4550 | 130 km |
| Niijima | Lava dome(s) | 432 m (1,417 ft) | 886 | 140 km |
| Miyakejima | Stratovolcano | 775 m (2,543 ft) | 2010 | 151 km |
| Fujisan | Stratovolcano | 3,776 m (12,388 ft) | 1708 | 152 km |
| Kozushima | Lava dome(s) | 572 m (1,877 ft) | 838 | 161 km |
| Mikurajima | Stratovolcano | 851 m (2,792 ft) | -4100 | 169 km |
| Akagisan | Stratovolcano | 1,828 m (5,997 ft) | Unknown | 182 km |
| Nantaisan | Stratovolcano | 2,486 m (8,156 ft) | -9540 | 187 km |
| Omanago Group | Lava dome(s) | 2,341 m (7,680 ft) | -3050 | 190 km |
| Takaharayama | Stratovolcano | 1,795 m (5,889 ft) | -4570 | 192 km |
| Harunasan | Stratovolcano | 1,449 m (4,754 ft) | 550 | 195 km |
| Nikko-Shiranesan | Shield | 2,578 m (8,458 ft) | 1952 | 195 km |
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 2.9 in | Coldest |
| February | 43°F (6°C) | 3.8 in | |
| March | 48°F (9°C) | 5.8 in | |
| April | 57°F (14°C) | 5.6 in | |
| May | 64°F (18°C) | 6.1 in | |
| June | 69°F (21°C) | 7.9 in | |
| July | 75°F (24°C) | 5.0 in | |
| August | 78°F (26°C) | 5.6 in | Warmest |
| September | 74°F (23°C) | 8.4 in | |
| October | 65°F (18°C) | 8.9 in | Wettest |
| November | 56°F (13°C) | 5.4 in | |
| December | 47°F (8°C) | 2.8 in | Driest |
Ōhara has a seasonal temperature swing of 36°F / from 42°F in January to 78°F in August. Total annual precipitation is 68.0 inches, with October being the wettest month (8.9") and December the driest (2.8").
Schools in Ōhara
8 public schools (NCES 2022-23 data).
| School | Level | Enrollment | Teachers | Student/Teacher |
|---|---|---|---|---|
| 市立大原中学校 | - | - | - | - |
| いすみ市立東小学校 | - | - | - | - |
| いすみ市立東海小学校 | - | - | - | - |
| 県立大原高等学校 | - | - | - | - |
| Misaki High School | - | - | - | - |
| いすみ市立大原小学校 | - | - | - | - |
| Nakane Elementary School | - | - | - | - |
| Choja Elementary School | - | - | - | - |
Radio Stations near Ōhara
0 stations within ~55 km.
| Station | Genre | Quality |
|---|
Museums in Ōhara
| Name | Type | Address | Phone | Annual Revenue |
|---|---|---|---|---|
| Art House Asobara no Tani | ||||
| Ichihara Lakeside Museum | ||||
| いすみ市郷土資料館（田園の美術館） | ||||
| 千葉県いすみ環境と文化のさとセンター | ||||
| 千葉県立中央博物館分館海の博物館 | ||||
| 千葉県立中央博物館大多喜城分館 | ||||
| 史跡長柄横穴群資料館 | ||||
| 商い資料館 | ||||
| 国際上総埴生美術館 | ||||
| 大多喜町 天然ガス記念館 | ||||
| 市原市水と彫刻の丘 | ||||
| 御宿町歴史民俗資料館 | ||||
| 房総中央鉄道館 | ||||
| 月の砂漠記念館 | ||||
| 森林博物資料館 | ||||
| 清澄寺霊宝殿 | ||||
| 白子町歴史民俗資料室 | ||||
| 睦沢町立歴史民俗資料館 | ||||
| 研修館 | ||||
| 茂原市立美術館・郷土資料館 | ||||
| 誕生寺宝物館 | ||||
| 釜屋 | ||||
| 長南町郷土資料館 | ||||
| 麻雀博物館 | ||||
| 黒汐資料館 |
Libraries in Ōhara
| Name | Address | Staff | Annual Visits | Circulation | Collection | Programs |
|---|---|---|---|---|---|---|
| 勝浦市立図書館 | 0.0 | |||||
| 大多喜町立大多喜図書館天賞文庫 | 0.0 | |||||
| 大網白里市図書室白里分室 | 0.0 |
Restaurants in Ōhara
3 restaurants within city radius - OpenStreetMap data
Cafes in Ōhara
3 cafes within city radius - OpenStreetMap data
Train Stations in Ōhara
7 train stations within city radius - OpenStreetMap data
Gas Stations in Ōhara
3 gas stations within city radius - OpenStreetMap data
Airports Near Ōhara
13 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| Narita International Airport | NRT | Large Airport |
| Tokyo Haneda International Airport | HND | Large Airport |
| JGSDF Kisarazu Airfield | - | Medium Airport |
| JMSDF Shimofusa Air Base | - | Medium Airport |
| JMSDF Tateyama Air Base | - | Medium Airport |
| Iwabuchi Watergate Auxiliary Airfield | - | Small Airport |
| JGSDF Narashino Airfield | - | Small Airport |
| Kisarazu Nakajima Auxiliary Airfield / Kisarazu Heliport | - | Small Airport |
| Kozaki Airfield | - | Small Airport |
| Otone Airfield | - | Small Airport |
| Ryugasaki Airfield | - | Small Airport |
| Tokyo Flight Park Moriya Airstrip | - | Small Airport |
| Urayasu Emergency Runway | - | Small Airport |
Post Offices in Ōhara
5 post offices.
| Post Office | Address |
|---|---|
| Misaki Post Office | |
| Ohara Kohama Post Office | |
| Ohara Minamicho Post Office | |
| Ohara Post Office | |
| Yamada Post Office |
Churches & Religious Organizations in Ōhara
2 religious organizations (IRS tax-exempt data).
| Name | Address |
|---|---|
| Hachiman-jinja Shrine | |
| Kiyomizudera Temple |
Quick Facts
🇯🇵 About Japan
Public Holidays in Japan
16 public holidays this year
Frequently Asked Questions About Ōhara
What is the population of Ōhara?
Ōhara has a population of 20,226 residents and is located in Japan. The population density is 786 people per square mile, spread across 25.7 square miles. The median age of residents is 47.5 years, which is older than the national median of 38.9 years.
Is Ōhara expensive to live in?
The median household income is $35,400, 53% below the national average of $75,149. The median home value is $102,000 (64% below the U.S. median). Renters pay a median of $510 per month, below the national average of $1,163. The home price-to-income ratio is 2.9x, indicating housing is reasonably affordable relative to local income levels.
What is the weather like in Ōhara?
Ōhara enjoys a temperate climate with an average annual temperature of 60°F (15°C). Winter temperatures average 42°F in January, while summers reach an average of 75°F in July. The area receives 213 sunny days per year. Annual rainfall totals 68.0 inches.
How is the job market in Ōhara?
The job market in Ōhara is very strong, with unemployment at just 2.5% / well below the national rate of 3.6%. There are 647 business establishments in the area.
How much does housing cost in Ōhara?
The median home value in Ōhara is $102,000. For renters, the median monthly rent is $510.