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Omitama, Japan

Full City Profile

4.1 /5.0
A Great
48,870 Population 726/sq mi density
89 ft Elevation 27 meters
56°F Avg Temperature 13°C
A
Overall
4.1 / 5.0
Strong
B
Economy
3.2 / 5.0
$32,500 median income, 2.5% unemployment
A+
Affordability
5.0 / 5.0
$84,000 home value, $420/mo rent
Omitama enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 37°F in January while summers reach 74°F in July. The area gets 236 sunny days per year. Annual precipitation totals 54.9 inches. The area receives 0.0 inches of snow annually.

Temperature

37°F Jan (3°C) 74°F Jul (23°C)
Annual Average56.1°F
4% above US avg
January Average37°F (3°C)
July Average74°F (23°C)
Sunny Days236 days/yr

Geography

Elevation89 ft (27 m)
Area67.3 sq mi (174.3 km²)
Population Density726/sq mi
Coordinates36.2545°N, 140.3796°W
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 54.9"
45% above US avg
Snowfall 0.0"
Wettest Month (Oct) 7.13"
Driest Month (Jan) 1.61"

Air Quality

Earthquake History

3,986 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.9. Most recent: M4.2 on Aug 29, 2025.

Mar 11, 2011 47 km E of ?arai, Japan M7.9 66 km
May 7, 2008 78 km NE of Hasaki, Japan M6.9 103 km
Apr 11, 2011 17 km SSW of Ishikawa, Japan M6.6 83 km
Mar 11, 2011 81 km NE of Hasaki, Japan M6.5 107 km
Mar 11, 2011 108 km ESE of Kitaibaraki, Japan M6.4 135 km
Jul 30, 2011 13 km SSE of Iwaki, Japan M6.3 92 km
Mar 11, 2011 near the east coast of Honshu, Japan M6.3 134 km
Jun 1, 1990 near the east coast of Honshu, Japan M6.3 82 km
Mar 11, 2011 92 km ENE of Hasaki, Japan M6.3 132 km
Sep 11, 1996 23 km SSE of Hasaki, Japan M6.2 95 km
Jun 3, 2000 6 km SE of Narut?, Japan M6.2 79 km
May 7, 2008 80 km NE of Hasaki, Japan M6.2 105 km
Mar 11, 2011 70 km ESE of Kitaibaraki, Japan M6.2 105 km
Apr 11, 2011 23 km SE of T?gane, Japan M6.2 95 km
Apr 21, 2011 6 km WNW of T?gane, Japan M6.2 75 km
Sep 15, 2011 68 km E of ?arai, Japan M6.1 86 km
May 26, 2023 12 km SE of Narutō, Japan M6.1 82 km
Mar 13, 2011 72 km E of Hasaki, Japan M6.1 128 km
Mar 12, 2011 29 km SSE of Namie, Japan M6.1 131 km
Aug 5, 1990 43 km E of ?arai, Japan M6.1 62 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

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

Year Name Category Closest
2024 Ampil Category 3 202 km
2024 Jebi Category 1 203 km
2021 Mindulle Category 1 294 km
2019 Faxai Category 3 51 km
2019 Hagibis Category 2 73 km
2018 Shanshan Category 1 174 km
2018 Jongdari Category 1 266 km
2016 Lionrock Category 1 203 km
2016 Mindulle Category 1 232 km
2014 Phanfone Category 1 234 km
2011 Roke Category 1 113 km
2007 Fitow Category 1 129 km
2005 Saola Category 2 282 km
2005 Mawar Category 2 62 km
2004 Ma-on Category 3 90 km
2002 Higos Category 2 58 km
2001 Vipa Category 1 277 km
2001 Danas Category 1 16 km
2000 Sonamu Category 1 248 km
2000 Kirogi Category 1 87 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

17 tsunamis recorded within 500 km. Highest wave on record: 2.0 m (7 ft).

Year Location Cause Max Wave Deaths Distance
1732 KUJUKURI BEACH, JAPAN Earthquake 2.0 m 123 km
1670 BOSO, JAPAN Earthquake 2.0 m 101 km
1938 OFF FUKUSHIMA PREFECTURE Earthquake 1.3 m 144 km
1938 JAPAN TRENCH Earthquake 0.8 m 104 km
1938 SANRIKU Earthquake 0.8 m 130 km
1982 IBARAKI, JAPAN Earthquake 0.4 m 119 km
1961 KASHIMA, JAPAN Earthquake 0.4 m 139 km
1961 KASHIMA, JAPAN Earthquake 0.4 m 137 km
1896 KASHIMA, JAPAN Earthquake 0.3 m 62 km
1935 JAPAN Earthquake 0.2 m 99 km
1987 E. HONSHU ISLAND Earthquake 0.1 m 143 km
1855 TOKAIDO Earthquake 6,757 85 km
1782 ODAWARA, SAGAMI BAY Eruption + Earthquake 142 km
1642 BOSO, JAPAN Earthquake 119 km
1602 BOSO, JAPAN Eruption + Earthquake 129 km
1257 SAGAMI BAY, JAPAN Earthquake 142 km
1241 KAMAKURA, SAGAMI BAY Earthquake 147 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

15 volcanoes within 200 km. Closest: Takaharayama (90 km).

Name Type Elevation Last Eruption Distance
Takaharayama Stratovolcano 1,795 m (5,889 ft) -4570 90 km
Nantaisan Stratovolcano 2,486 m (8,156 ft) -9540 98 km
Omanago Group Lava dome(s) 2,341 m (7,680 ft) -3050 98 km
Nasudake Stratovolcano(es) 1,915 m (6,283 ft) 1963 104 km
Nikko-Shiranesan Shield 2,578 m (8,458 ft) 1952 108 km
Akagisan Stratovolcano 1,828 m (5,997 ft) Unknown 112 km
Hiuchigatake Stratovolcano 2,356 m (7,730 ft) 1544 125 km
Harunasan Stratovolcano 1,449 m (4,754 ft) 550 139 km
Numazawa Shield 835 m (2,740 ft) -3400 151 km
Bandaisan Stratovolcano 1,816 m (5,958 ft) 1888 152 km
Adatarayama Stratovolcano(es) 1,728 m (5,669 ft) 1996 155 km
Azumayama Stratovolcano(es) 1,949 m (6,394 ft) 1977 165 km
Hakoneyama Complex 1,438 m (4,718 ft) 2015 167 km
Asamayama Complex 2,568 m (8,425 ft) 2019 167 km
Kusatsu-Shiranesan Stratovolcano(es) 2,165 m (7,103 ft) 2018 171 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 37°F (3°C) 1.6 in Coldest, Driest
February 38°F (3°C) 2.5 in
March 44°F (6°C) 3.8 in
April 54°F (12°C) 4.7 in
May 61°F (16°C) 5.2 in
June 67°F (20°C) 6.7 in
July 74°F (23°C) 5.7 in
August 77°F (25°C) 5.2 in Warmest
September 71°F (21°C) 7.1 in
October 61°F (16°C) 7.1 in Wettest
November 50°F (10°C) 3.4 in
December 41°F (5°C) 2.1 in

Omitama has a seasonal temperature swing of 40°F / from 37°F in January to 77°F in August. Total annual precipitation is 54.9 inches, with October being the wettest month (7.1") and January the driest (1.6").

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