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Ōmachi, Japan

Full City Profile

4.1 /5.0
A Great
6,293 Population 1,144/sq mi density
89 ft Elevation 27 meters
60°F Avg Temperature 16°C
A
Overall
4.1 / 5.0
Strong
B
Economy
3.2 / 5.0
$27,400 median income, 2.3% unemployment
A+
Affordability
5.0 / 5.0
$68,000 home value, $340/mo rent
Ōmachi enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 41°F in January while summers reach 79°F in July. The area gets 200 sunny days per year. Annual precipitation totals 74.8 inches. The area receives 0.0 inches of snow annually.

Temperature

41°F Jan (5°C) 79°F Jul (26°C)
Annual Average60.1°F
11% above US avg
January Average41°F (5°C)
July Average79°F (26°C)
Sunny Days200 days/yr

Geography

Elevation89 ft (27 m)
Area4.4 sq mi (11.5 km²)
Population Density1,144/sq mi
Coordinates33.2188°N, 130.1197°W
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 74.8"
97% above US avg
Snowfall 0.0"
Wettest Month (Jun) 12.72"
Driest Month (Dec) 2.48"

Air Quality

Earthquake History

223 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.0. Most recent: M4.9 on Aug 6, 2025.

Apr 15, 2016 6 km ESE of Kumamoto, Japan M7.0 76 km
Mar 20, 2005 28 km NNW of Maebaru-ch??, Japan M6.6 65 km
Jun 11, 2006 15 km S of Tsukawaki, Japan M6.3 96 km
Apr 14, 2016 2 km SSE of Kumamoto, Japan M6.2 73 km
Mar 26, 1997 16 km NE of Satsumasendai, Japan M6.1 147 km
Apr 14, 2016 5 km ENE of Uto, Japan M6.0 81 km
Apr 15, 2016 6 km S of Kikuchi, Japan M5.7 72 km
May 22, 1998 9 km NE of Bungo-Takada-shi, Japan M5.5 137 km
Apr 19, 2005 8 km NNW of Maebaru-ch??, Japan M5.5 47 km
Apr 15, 2016 10 km NE of Aso, Japan M5.5 100 km
Apr 18, 2016 8 km NNE of Aso, Japan M5.5 94 km
Apr 14, 2016 14 km ESE of Kumamoto, Japan M5.4 84 km
Apr 15, 2016 5 km WSW of Aso, Japan M5.4 90 km
Feb 12, 1994 4 km WSW of ?kuchi-shinohara, Japan M5.4 136 km
Apr 14, 2016 4 km NNE of Uto, Japan M5.3 77 km
Apr 19, 2016 6 km NNE of Honmachi, Japan M5.3 87 km
Apr 15, 2016 13 km ESE of Kumamoto, Japan M5.3 83 km
Apr 15, 2016 5 km ENE of Uto, Japan M5.3 80 km
Apr 15, 2016 13 km E of Uto, Japan M5.2 86 km
Apr 16, 2016 8 km ENE of Kumamoto, Japan M5.2 74 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

60 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 3. Most recent: Shanshan (2024).

Year Name Category Closest
2024 Shanshan Category 2 82 km
2022 Nanmadol Category 2 26 km
2022 Hinnamnor Category 2 216 km
2020 Haishen Category 2 98 km
2020 Maysak Category 2 201 km
2019 Francisco Category 1 57 km
2018 Trami Category 1 263 km
2018 Prapiroon Category 1 107 km
2017 Noru Category 1 258 km
2016 Malakas Category 3 222 km
2016 Chaba Category 1 228 km
2016 Namtheun Category 1 270 km
2015 Goni Category 3 53 km
2014 Halong Category 1 287 km
2013 Danas Category 2 160 km
2012 Sanba Category 3 207 km
2012 Damrey Category 1 286 km
2011 Ma-on Category 1 279 km
2007 Usagi Category 3 114 km
2007 Man-yi Category 2 197 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

8 tsunamis recorded within 500 km. Highest wave on record: 55.0 m (180 ft).

Year Location Cause Max Wave Deaths Distance
1792 SHIMABARA BAY, KYUSHU ISLAND Landslide 55.0 m 15,000 55 km
1596 BEPPU BAY, KYUSHU Eruption + Earthquake 8.0 m 708 147 km
1828 AMAKUSA SEA Earthquake 72 km
1715 SEIKAIDO Earthquake 147 km
1698 SEIKAIDO-NANKAIDO Earthquake 147 km
1619 YATSUSHIRO, JAPAN Earthquake 92 km
1597 BEPPU BAY, JAPAN Eruption + Earthquake 40 138 km
744 SW. KYUSHU ISLAND Earthquake 1,520 98 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

9 volcanoes within 200 km. Closest: Unzendake (54 km).

Name Type Elevation Last Eruption Distance
Unzendake Complex 1,483 m (4,865 ft) 1996 54 km
Asosan Caldera 1,592 m (5,223 ft) 2020 99 km
Kujusan Stratovolcano(es) 1,791 m (5,876 ft) 1996 106 km
Yufu-Tsurumi Lava dome(s) 1,584 m (5,197 ft) 867 118 km
Fukue Shield(s) 315 m (1,033 ft) -400 134 km
Kirishimayama Shield 1,700 m (5,577 ft) 2018 159 km
Yonemaru-Sumiyoshiike Maar(s) 40 m (131 ft) -6200 167 km
Aira Caldera 1,117 m (3,665 ft) 2020 188 km
Abu Shield(s) 641 m (2,103 ft) -6850 197 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 41°F (5°C) 2.7 in Coldest
February 43°F (6°C) 3.2 in
March 48°F (9°C) 4.7 in
April 57°F (14°C) 6.4 in
May 65°F (18°C) 6.7 in
June 71°F (22°C) 12.7 in Wettest
July 79°F (26°C) 12.6 in
August 80°F (27°C) 7.6 in Warmest
September 74°F (23°C) 8.6 in
October 64°F (18°C) 3.9 in
November 54°F (12°C) 3.1 in
December 45°F (7°C) 2.5 in Driest

Ōmachi has a seasonal temperature swing of 39°F / from 41°F in January to 80°F in August. Total annual precipitation is 74.9 inches, with June being the wettest month (12.7") and December the driest (2.5").

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