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Sasadaira, Japan

Full City Profile

4.1 /5.0
A Great
2,003 Population 102/sq mi density
1,490 ft Elevation 454 meters
52°F Avg Temperature 11°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
Sasadaira experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 33°F in January while summers reach 70°F in July. The area gets 231 sunny days per year. Annual precipitation totals 58.0 inches. The area receives 3.4 inches of snow annually.

Temperature

33°F Jan (1°C) 70°F Jul (21°C)
Annual Average52.1°F
4% below US avg
January Average33°F (1°C)
July Average70°F (21°C)
Sunny Days231 days/yr

Geography

Elevation1,490 ft (454 m)
Area19.7 sq mi (50.9 km²)
Population Density102/sq mi
Coordinates35.7056°N, 139.1425°W
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 58.0"
53% above US avg
Snowfall 3.4"
Wettest Month (Aug) 9.17"
Driest Month (Dec) 1.22"

Air Quality

Earthquake History

1,561 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.4. Most recent: M4.3 on Aug 28, 2025.

Feb 20, 1990 28 km E of Shimoda, Japan M6.4 112 km
Jun 1, 1990 near the east coast of Honshu, Japan M6.3 110 km
Jun 3, 2000 6 km SE of Narut?, Japan M6.2 121 km
Apr 11, 2011 23 km SE of T?gane, Japan M6.2 134 km
Apr 21, 2011 6 km WNW of T?gane, Japan M6.2 106 km
Aug 10, 2009 8 km NE of Sagara, Japan M6.2 134 km
May 26, 2023 12 km SE of Narutō, Japan M6.1 127 km
Mar 14, 2012 5 km SE of Asahi, Japan M6.0 140 km
May 4, 2014 31 km ESE of It?, Japan M6.0 92 km
Mar 15, 2011 6 km NNW of Fujinomiya, Japan M6.0 70 km
Apr 10, 2005 near the east coast of Honshu, Japan M5.9 114 km
Aug 1, 2011 20 km E of ?yama, Japan M5.9 136 km
Jan 15, 2007 15 km WSW of Heda, Japan M5.9 101 km
Jul 23, 2005 9 km WSW of Ichihara, Japan M5.9 79 km
Feb 25, 2013 29 km NE of Numata, Japan M5.8 127 km
Apr 29, 2012 5 km NNW of T?gane, Japan M5.8 110 km
Feb 1, 1992 4 km SSE of Miura, Japan M5.8 81 km
Apr 16, 2011 6 km ENE of Tanuma, Japan M5.8 88 km
Sep 20, 2003 12 km SSE of Kamogawa, Japan M5.7 122 km
Jun 14, 1998 18 km NE of ?hara, Japan M5.7 130 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

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

Year Name Category Closest
2024 Ampil Category 3 253 km
2024 Jebi Category 1 295 km
2019 Faxai Category 3 68 km
2019 Hagibis Category 2 26 km
2018 Jongdari Category 2 184 km
2018 Jebi Category 1 288 km
2018 Shanshan Category 1 204 km
2016 Mindulle Category 1 160 km
2014 Phanfone Category 1 112 km
2011 Roke Category 2 22 km
2009 Melor Category 1 300 km
2009 Krovanh Category 1 255 km
2007 Fitow Category 1 13 km
2005 Mawar Category 2 75 km
2004 Ma-on Category 3 58 km
2003 Etau Category 1 266 km
2002 Higos Category 2 70 km
2001 Vipa Category 1 289 km
2001 Danas Category 1 65 km
2000 Kirogi Category 1 148 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 75 km
1703 OFF SW BOSO PENINSULA Earthquake 11.7 m 5,233 127 km
1495 KAMAKURA, SAGAMI BAY, TOKAIDO Earthquake 5.0 m 200 75 km
1433 OFF IZU-OSHIMA Earthquake 2.0 m 95 km
2009 HONSHU: S COAST Earthquake 0.6 m 1 134 km
1980 HONSHU ISLAND Earthquake 0.6 m 100 km
1978 TOKAIDO Earthquake 0.4 m 25 100 km
1923 RYUKYU ISLANDS Earthquake 0.3 m 131 km
1974 TOKAIDO Earthquake 0.2 m 30 129 km
1990 JAPAN Earthquake 0.2 m 112 km
1857 TOKAIDO Earthquake 127 km
1855 TOKAIDO Earthquake 6,757 60 km
1782 ODAWARA, SAGAMI BAY Eruption + Earthquake 84 km
1642 BOSO, JAPAN Earthquake 144 km
1633 SAGAMI BAY Earthquake 150 57 km
1602 BOSO, JAPAN Eruption + Earthquake 140 km
1589 SURUGA, JAPAN Earthquake 132 km
1257 SAGAMI BAY, JAPAN Earthquake 65 km
1241 KAMAKURA, SAGAMI BAY Earthquake 61 km
818 TOKAIDO Eruption + Earthquake 58 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

15 volcanoes within 200 km. Closest: Fujisan (54 km).

Name Type Elevation Last Eruption Distance
Fujisan Stratovolcano 3,776 m (12,388 ft) 1708 54 km
Hakoneyama Complex 1,438 m (4,718 ft) 2015 54 km
Yokodake Stratovolcano(es) 2,480 m (8,136 ft) 1200 85 km
Izu-Tobu Pyroclastic cone(s) 1,406 m (4,613 ft) 1989 90 km
Harunasan Stratovolcano 1,449 m (4,754 ft) 550 90 km
Akagisan Stratovolcano 1,828 m (5,997 ft) Unknown 95 km
Asamayama Complex 2,568 m (8,425 ft) 2019 96 km
Izu-Oshima Stratovolcano 758 m (2,487 ft) 1990 112 km
Kusatsu-Shiranesan Stratovolcano(es) 2,165 m (7,103 ft) 2018 116 km
Nantaisan Stratovolcano 2,486 m (8,156 ft) -9540 122 km
Shiga Shield(s) 2,041 m (6,696 ft) Unknown 123 km
Nikko-Shiranesan Shield 2,578 m (8,458 ft) 1952 123 km
Omanago Group Lava dome(s) 2,341 m (7,680 ft) -3050 126 km
Toshima Stratovolcano 508 m (1,667 ft) -4550 132 km
Hiuchigatake Stratovolcano 2,356 m (7,730 ft) 1544 140 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 33°F (1°C) 1.4 in Coldest
February 34°F (1°C) 2.0 in
March 39°F (4°C) 3.3 in
April 49°F (10°C) 4.2 in
May 58°F (14°C) 5.0 in
June 64°F (18°C) 7.5 in
July 70°F (21°C) 6.6 in
August 73°F (23°C) 9.2 in Warmest, Wettest
September 66°F (19°C) 8.8 in
October 56°F (13°C) 6.1 in
November 47°F (8°C) 2.8 in
December 38°F (3°C) 1.2 in Driest

Sasadaira has a seasonal temperature swing of 40°F / from 33°F in January to 73°F in August. Total annual precipitation is 58.0 inches, with August being the wettest month (9.2") and December the driest (1.2").

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