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Hachijō, Japan

Full City Profile

4.1 /5.0
A Great
7,211 Population 8/sq mi density
75 ft Elevation 23 meters
65°F Avg Temperature 18°C
A
Overall
4.1 / 5.0
Strong
B+
Economy
3.5 / 5.0
$45,800 median income, 2.7% unemployment
A+
Affordability
4.6 / 5.0
$166,000 home value, $830/mo rent
Hachijō enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 52°F in January while summers reach 77°F in July. The area gets 150 sunny days per year. Annual precipitation totals 103.2 inches. The area receives 0.0 inches of snow annually.

Temperature

52°F Jan (11°C) 77°F Jul (25°C)
Annual Average65.0°F
20% above US avg
January Average52°F (11°C)
July Average77°F (25°C)
Sunny Days150 days/yr

Geography

Elevation75 ft (23 m)
Area901.5 sq mi (2,334.9 km²)
Population Density8/sq mi
Coordinates33.1028°N, 139.7788°W
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 103.2"
172% above US avg
Snowfall 0.0"
Wettest Month (Oct) 13.07"
Driest Month (Dec) 5.24"

Air Quality

Earthquake History

1,518 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.6. Most recent: M4.4 on Aug 27, 2025.

Aug 12, 2009 244 km SSE of Tateyama, Japan M6.6 66 km
Sep 23, 1990 153 km SSE of ?yama, Japan M6.5 107 km
Jul 30, 2000 94 km SSE of Shimoda, Japan M6.5 96 km
Sep 3, 1991 115 km S of Shimoda, Japan M6.4 111 km
Sep 23, 1990 162 km SSE of ?yama, Japan M6.2 102 km
Jul 1, 2000 53 km SSE of Shimoda, Japan M6.1 138 km
Jul 15, 2000 near the south coast of Honshu, Japan M6.1 144 km
Oct 6, 1995 68 km S of Shimoda, Japan M5.9 126 km
Jul 8, 2000 71 km SSE of Shimoda, Japan M5.9 122 km
Jul 4, 2001 285 km S of Shimoda, Japan M5.9 108 km
Jul 29, 2019 246 km SSE of Tateyama, Japan M5.8 79 km
Jul 9, 2005 194 km SSE of Tateyama, Japan M5.8 104 km
May 14, 2023 156 km SSE of Shimoda, Japan M5.8 45 km
Jul 30, 2000 90 km SSE of Shimoda, Japan M5.7 101 km
Jul 5, 2001 284 km SSE of Shimoda, Japan M5.7 106 km
Mar 25, 2018 276 km SSE of Tateyama, Japan M5.7 102 km
Aug 18, 2000 64 km SSE of Shimoda, Japan M5.7 127 km
Mar 28, 2021 154 km SSE of Tateyama, Japan M5.7 75 km
Jul 2, 2000 71 km SSE of Shimoda, Japan M5.7 120 km
Jun 29, 2000 81 km SSE of Shimoda, Japan M5.6 110 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

63 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 4. Most recent: Halong (2025).

Year Name Category Closest
2025 Halong Category 4 45 km
2025 Nakri Category 1 49 km
2024 Ampil Category 3 95 km
2024 Jebi Category 1 176 km
2023 Lan Category 2 258 km
2021 Mindulle Category 2 162 km
2019 Faxai Category 4 74 km
2019 Hagibis Category 3 161 km
2018 Jongdari Category 2 102 km
2018 Shanshan Category 1 153 km
2017 Lan Category 1 242 km
2016 Mindulle Category 1 136 km
2014 Phanfone Category 1 237 km
2014 Fengshen Category 1 180 km
2013 Pabuk Category 2 290 km
2013 Wipha Category 1 97 km
2011 Sonca Category 2 275 km
2011 Roke Category 2 262 km
2010 Chaba Category 1 154 km
2009 Krovanh Category 1 46 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

16 tsunamis recorded within 500 km. Highest wave on record: 6.0 m (20 ft).

Year Location Cause Max Wave Deaths Distance
1953 MYOJINSHO SUBMARINE VOLCANO Astronomical 6.0 m 136 km
1972 CHICHI JIMA Earthquake 0.5 m 89 km
1952 MYOJINSHO SUBMARINE VOLCANO Astronomical 0.5 m 31 136 km
1972 EAST OFF HACHIJO ISLAND Earthquake 0.4 m 98 km
1952 MYOJINSHO SUBMARINE VOLCANO Astronomical 0.4 m 136 km
1952 MYOJINSHO SUBMARINE VOLCANO Astronomical 0.3 m 136 km
1990 W. OF BONIN ISLANDS, IZU IS., JAPAN Earthquake 0.2 m 107 km
1982 S. OF HONSHU ISLAND Earthquake 0.2 m 87 km
2000 HONSHU: S COAST Earthquake 0.1 m 96 km
2000 KOZU-SHIMA ISLAND, HONSHU Earthquake 0.1 m 1 138 km
2000 HONSHU: S COAST Earthquake 0.1 m 144 km
1953 MYOJINSHO SUBMARINE VOLCANO Astronomical 0.1 m 136 km
1952 MYOJINSHO SUBMARINE VOLCANO Astronomical 136 km
1915 MYOJINSHO SUBMARINE VOLCANO Astronomical 136 km
1606 CHICHIJIMA-TOKAIDO Astronomical 135 km
1605 ENSHUNADA Earthquake 1,001 127 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

11 volcanoes within 200 km. Closest: Hachijojima (4 km).

Name Type Elevation Last Eruption Distance
Hachijojima Stratovolcano(es) 854 m (2,802 ft) 1606 4 km
Aogashima Stratovolcano 423 m (1,388 ft) 1785 72 km
Mikurajima Stratovolcano 851 m (2,792 ft) -4100 87 km
Kita-Bayonnaise Submarine -360 m (-1,181 ft) Unknown 112 km
Miyakejima Stratovolcano 775 m (2,543 ft) 2010 113 km
Myojinsho Submarine 11 m (36 ft) 1970 136 km
Kozushima Lava dome(s) 572 m (1,877 ft) 838 137 km
Niijima Lava dome(s) 432 m (1,417 ft) 886 151 km
Toshima Stratovolcano 508 m (1,667 ft) -4550 164 km
Izu-Oshima Stratovolcano 758 m (2,487 ft) 1990 184 km
Sumisujima Submarine 136 m (446 ft) 1916 187 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 52°F (11°C) 5.3 in
February 52°F (11°C) 5.8 in Coldest
March 55°F (13°C) 7.9 in
April 61°F (16°C) 8.4 in
May 67°F (19°C) 10.0 in
June 72°F (22°C) 12.8 in
July 77°F (25°C) 7.0 in
August 79°F (26°C) 8.2 in Warmest
September 76°F (25°C) 11.1 in
October 70°F (21°C) 13.1 in Wettest
November 64°F (18°C) 8.6 in
December 57°F (14°C) 5.2 in Driest

Hachijō has a seasonal temperature swing of 27°F / from 52°F in February to 79°F in August. Total annual precipitation is 103.2 inches, with October being the wettest month (13.1") and December the driest (5.2").

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