Usui, Japan

Full City Profile

7,385 Population 118/sq mi density
26 ft Elevation 8 meters
63°F Avg Temperature 17°C
Usui enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 42°F in January while summers reach 82°F in July. Annual precipitation totals 50.3 inches. The area receives 0.5 inches of snow annually.

Temperature

42°F Jan (6°C) 82°F Jul (28°C)
Annual Average63.1°F
17% above US avg
January Average42°F (6°C)
July Average82°F (28°C)

Geography

Elevation26 ft (8 m)
Area62.7 sq mi (162.5 km²)
Population Density118/sq mi
Coordinates35.7333°N, 140.1833°E
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 50.3"
32% above US avg
Snowfall 0.5"
Wettest Month (Sep) 7.40"
Driest Month (Jan) 1.89"

Air Quality

Earthquake History

3,189 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 M7.9 103 km
May 7, 2008 78 km NE of Hasaki, Japan M6.9 130 km
Apr 11, 2011 17 km SSW of Ishikawa, Japan M6.6 142 km
Mar 11, 2011 81 km NE of Hasaki, Japan M6.5 133 km
Feb 20, 1990 28 km E of Shimoda, Japan M6.4 142 km
Jun 1, 1990 near the east coast of Honshu, Japan M6.3 27 km
Mar 11, 2011 92 km ENE of Hasaki, Japan M6.3 149 km
Apr 11, 2011 23 km SE of T?gane, Japan M6.2 50 km
May 7, 2008 80 km NE of Hasaki, Japan M6.2 132 km
Sep 11, 1996 23 km SSE of Hasaki, Japan M6.2 72 km
Apr 21, 2011 6 km WNW of T?gane, Japan M6.2 20 km
Jun 3, 2000 6 km SE of Narut?, Japan M6.2 32 km
Mar 11, 2011 70 km ESE of Kitaibaraki, Japan M6.2 149 km
Aug 5, 1990 43 km E of ?arai, Japan M6.1 103 km
Sep 15, 2011 68 km E of ?arai, Japan M6.1 119 km
Jun 5, 2012 75 km ESE of ?hara, Japan M6.1 123 km
May 26, 2023 12 km SE of Narutō, Japan M6.1 39 km
Mar 13, 2011 72 km E of Hasaki, Japan M6.1 131 km
May 7, 2008 95 km ENE of Hasaki, Japan M6.1 149 km
May 4, 2014 31 km ESE of It?, Japan M6.0 115 km
Source: USGS (M2.5+, 1990-2025)

Hurricane History

40 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 3. Most recent: Nakri (2025).

Year Name Category Closest
2025 Nakri Category 1 276 km
2024 Ampil Category 3 182 km
2024 Jebi Category 1 210 km
2021 Mindulle Category 1 281 km
2019 Faxai Category 3 13 km
2019 Hagibis Category 2 72 km
2018 Jongdari Category 2 206 km
2018 Shanshan Category 1 133 km
2016 Mindulle Category 1 171 km
2016 Lionrock Category 1 219 km
2014 Phanfone Category 1 187 km
2011 Roke Category 1 91 km
2009 Krovanh Category 1 250 km
2007 Fitow Category 1 90 km
2005 Saola Category 2 243 km
2005 Mawar Category 2 11 km
2004 Ma-on Category 3 38 km
2003 Choi-wan Category 3 261 km
2002 Higos Category 2 32 km
2002 Phanfone Category 1 281 km
Source: NOAA IBTrACS (Cat 1+, 1980-2026)

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 94 km
1703 OFF SW BOSO PENINSULA Earthquake 11.7 m 5,233 120 km
1677 OFF SE. BOSO PENINSULA Earthquake 8.0 m 500 145 km
1495 KAMAKURA, SAGAMI BAY, TOKAIDO Earthquake 5.0 m 200 94 km
1732 KUJUKURI BEACH, JAPAN Earthquake 2.0 m - 82 km
1670 BOSO, JAPAN Earthquake 2.0 m - 78 km
1433 OFF IZU-OSHIMA Earthquake 2.0 m - 112 km
1980 HONSHU ISLAND Earthquake 0.6 m - 137 km
1982 IBARAKI, JAPAN Earthquake 0.4 m - 146 km
1978 TOKAIDO Earthquake 0.4 m 25 133 km
1923 RYUKYU ISLANDS Earthquake 0.3 m - 93 km
1896 KASHIMA, JAPAN Earthquake 0.3 m - 113 km
1935 JAPAN Earthquake 0.2 m - 146 km
1990 JAPAN Earthquake 0.2 m - 142 km
1855 TOKAIDO Earthquake - 6,757 36 km
1782 ODAWARA, SAGAMI BAY Eruption + Earthquake - - 83 km
1642 BOSO, JAPAN Earthquake - - 70 km
1633 SAGAMI BAY Earthquake - 150 107 km
1602 BOSO, JAPAN Eruption + Earthquake - - 76 km
1257 SAGAMI BAY, JAPAN Earthquake - - 86 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

15 volcanoes within 200 km. Closest: Hakoneyama (119 km).

Name Type Elevation Last Eruption Distance
Hakoneyama Complex 1,438 m (4,718 ft) 2015 119 km
Akagisan Stratovolcano 1,828 m (5,997 ft) Unknown 128 km
Nantaisan Stratovolcano 2,486 m (8,156 ft) -9540 130 km
Omanago Group Lava dome(s) 2,341 m (7,680 ft) -3050 133 km
Izu-Oshima Stratovolcano 758 m (2,487 ft) 1990 133 km
Takaharayama Stratovolcano 1,795 m (5,889 ft) -4570 135 km
Izu-Tobu Pyroclastic cone(s) 1,406 m (4,613 ft) 1989 135 km
Fujisan Stratovolcano 3,776 m (12,388 ft) 1708 138 km
Nikko-Shiranesan Shield 2,578 m (8,458 ft) 1952 139 km
Harunasan Stratovolcano 1,449 m (4,754 ft) 550 146 km
Nasudake Stratovolcano(es) 1,915 m (6,283 ft) 1963 156 km
Hiuchigatake Stratovolcano 2,356 m (7,730 ft) 1544 158 km
Toshima Stratovolcano 508 m (1,667 ft) -4550 158 km
Asamayama Complex 2,568 m (8,425 ft) 2019 167 km
Niijima Lava dome(s) 432 m (1,417 ft) 886 170 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 42°F (6°C) 1.9 in Driest
February 41°F (5°C) 2.7 in Coldest
March 46°F (8°C) 4.0 in
April 56°F (13°C) 4.7 in
May 64°F (18°C) 4.5 in
June 69°F (21°C) 6.2 in
July 82°F (28°C) 4.8 in Warmest
August 79°F (26°C) 5.0 in
September 73°F (23°C) 7.4 in Wettest
October 63°F (17°C) 7.0 in
November 53°F (12°C) 3.7 in
December 44°F (7°C) 1.9 in

Usui has a seasonal temperature swing of 41°F / from 41°F in February to 82°F in July. Total annual precipitation is 53.7 inches, with September being the wettest month (7.4") and January the driest (1.9").

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