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Ageo, Japan

Full City Profile

4.2 /5.0
A Great
226,940 Population 9,263/sq mi density
56 ft Elevation 17 meters
62°F Avg Temperature 17°C
A
Overall
4.2 / 5.0
Strong
B
Economy
3.3 / 5.0
$36,200 median income, 2.5% unemployment
A+
Affordability
5.0 / 5.0
$106,000 home value, $530/mo rent
Ageo enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 39°F in January while summers reach 84°F in July. The area gets 293 sunny days per year. Annual precipitation totals 51.6 inches. The area receives 5.4 inches of snow annually.

Temperature

39°F Jan (4°C) 84°F Jul (29°C)
Annual Average62.2°F
15% above US avg
January Average39°F (4°C)
July Average84°F (29°C)
Sunny Days293 days/yr

Geography

Elevation56 ft (17 m)
Area24.5 sq mi (63.5 km²)
Population Density9,263/sq mi
Coordinates35.9715°N, 139.6138°W
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 51.6"
36% above US avg
Snowfall 5.4"
Wettest Month (Sep) 7.83"
Driest Month (Jan) 1.42"

Air Quality

Earthquake History

2,429 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 M7.9 139 km
Apr 11, 2011 17 km SSW of Ishikawa, Japan M6.6 134 km
Feb 20, 1990 28 km E of Shimoda, Japan M6.4 145 km
Jun 1, 1990 near the east coast of Honshu, Japan M6.3 82 km
Jun 3, 2000 6 km SE of Narut?, Japan M6.2 90 km
Apr 21, 2011 6 km WNW of T?gane, Japan M6.2 76 km
Sep 11, 1996 23 km SSE of Hasaki, Japan M6.2 129 km
Apr 11, 2011 23 km SE of T?gane, Japan M6.2 107 km
May 26, 2023 12 km SE of Narutō, Japan M6.1 96 km
Aug 5, 1990 43 km E of ?arai, Japan M6.1 136 km
Mar 11, 2011 4 km ESE of Hasaki, Japan M6.0 117 km
May 4, 2014 31 km ESE of It?, Japan M6.0 119 km
Jul 20, 2000 31 km ESE of Hitachi, Japan M6.0 137 km
Apr 3, 2004 37 km ESE of Hitachi, Japan M6.0 135 km
Mar 15, 2011 6 km NNW of Fujinomiya, Japan M6.0 121 km
Mar 14, 2012 5 km SE of Asahi, Japan M6.0 103 km
Aug 6, 1991 19 km E of Hasaki, Japan M6.0 132 km
Apr 12, 2011 8 km WSW of Ishikawa, Japan M5.9 143 km
Jan 15, 2007 15 km WSW of Heda, Japan M5.9 149 km
Jul 23, 2005 9 km WSW of Ichihara, Japan M5.9 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 3 237 km
2024 Jebi Category 1 268 km
2019 Faxai Category 3 58 km
2019 Hagibis Category 2 46 km
2018 Shanshan Category 1 187 km
2018 Jongdari Category 1 220 km
2016 Mindulle Category 1 186 km
2016 Lionrock Category 1 269 km
2014 Phanfone Category 1 162 km
2011 Roke Category 2 38 km
2009 Krovanh Category 1 276 km
2007 Fitow Category 1 56 km
2005 Saola Category 2 296 km
2005 Mawar Category 2 69 km
2004 Ma-on Category 3 45 km
2002 Higos Category 2 27 km
2001 Vipa Category 1 286 km
2001 Danas Category 1 32 km
2000 Kirogi Category 1 123 km
1998 Vicki Category 2 206 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

19 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 97 km
1703 OFF SW BOSO PENINSULA Earthquake 11.7 m 5,233 142 km
1495 KAMAKURA, SAGAMI BAY, TOKAIDO Earthquake 5.0 m 200 97 km
1732 KUJUKURI BEACH, JAPAN Earthquake 2.0 m 137 km
1670 BOSO, JAPAN Earthquake 2.0 m 136 km
1433 OFF IZU-OSHIMA Earthquake 2.0 m 120 km
1980 HONSHU ISLAND Earthquake 0.6 m 135 km
1978 TOKAIDO Earthquake 0.4 m 25 133 km
1923 RYUKYU ISLANDS Earthquake 0.3 m 130 km
1896 KASHIMA, JAPAN Earthquake 0.3 m 138 km
1990 JAPAN Earthquake 0.2 m 145 km
1855 TOKAIDO Earthquake 6,757 40 km
1782 ODAWARA, SAGAMI BAY Eruption + Earthquake 97 km
1642 BOSO, JAPAN Earthquake 124 km
1633 SAGAMI BAY Earthquake 150 94 km
1602 BOSO, JAPAN Eruption + Earthquake 126 km
1257 SAGAMI BAY, JAPAN Earthquake 86 km
1241 KAMAKURA, SAGAMI BAY Earthquake 88 km
818 TOKAIDO Eruption + Earthquake 90 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

15 volcanoes within 200 km. Closest: Akagisan (76 km).

Name Type Elevation Last Eruption Distance
Akagisan Stratovolcano 1,828 m (5,997 ft) Unknown 76 km
Harunasan Stratovolcano 1,449 m (4,754 ft) 550 89 km
Nantaisan Stratovolcano 2,486 m (8,156 ft) -9540 89 km
Omanago Group Lava dome(s) 2,341 m (7,680 ft) -3050 92 km
Nikko-Shiranesan Shield 2,578 m (8,458 ft) 1952 94 km
Hakoneyama Complex 1,438 m (4,718 ft) 2015 98 km
Takaharayama Stratovolcano 1,795 m (5,889 ft) -4570 104 km
Fujisan Stratovolcano 3,776 m (12,388 ft) 1708 105 km
Asamayama Complex 2,568 m (8,425 ft) 2019 109 km
Hiuchigatake Stratovolcano 2,356 m (7,730 ft) 1544 113 km
Yokodake Stratovolcano(es) 2,480 m (8,136 ft) 1200 117 km
Kusatsu-Shiranesan Stratovolcano(es) 2,165 m (7,103 ft) 2018 121 km
Shiga Shield(s) 2,041 m (6,696 ft) Unknown 126 km
Izu-Tobu Pyroclastic cone(s) 1,406 m (4,613 ft) 1989 128 km
Nasudake Stratovolcano(es) 1,915 m (6,283 ft) 1963 132 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 39°F (4°C) 1.4 in Coldest, Driest
February 40°F (5°C) 2.1 in
March 46°F (8°C) 3.3 in
April 57°F (14°C) 4.1 in
May 65°F (18°C) 5.0 in
June 70°F (21°C) 6.9 in
July 84°F (29°C) 6.3 in Warmest
August 80°F (27°C) 6.7 in
September 73°F (23°C) 7.8 in Wettest
October 62°F (17°C) 6.3 in
November 52°F (11°C) 2.9 in
December 43°F (6°C) 1.5 in

Ageo has a seasonal temperature swing of 45°F / from 39°F in January to 84°F in July. Total annual precipitation is 54.2 inches, with September being the wettest month (7.8") and January the driest (1.4").

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