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Nankoku, Japan

Full City Profile

4.1 /5.0
A Great
46,664 Population 495/sq mi density
46 ft Elevation 14 meters
61°F Avg Temperature 16°C
A
Overall
4.1 / 5.0
Strong
B
Economy
3.1 / 5.0
$26,800 median income, 2.5% unemployment
A+
Affordability
5.0 / 5.0
$64,000 home value, $320/mo rent
Nankoku enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 42°F in January while summers reach 79°F in July. The area gets 188 sunny days per year. Annual precipitation totals 81.7 inches. The area receives 0.0 inches of snow annually.

Temperature

42°F Jan (6°C) 79°F Jul (26°C)
Annual Average60.9°F
13% above US avg
January Average42°F (6°C)
July Average79°F (26°C)
Sunny Days188 days/yr

Geography

Elevation46 ft (14 m)
Area94.2 sq mi (244.1 km²)
Population Density495/sq mi
Coordinates33.5694°N, 133.6494°W
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 81.7"
115% above US avg
Snowfall 0.0"
Wettest Month (Jun) 12.83"
Driest Month (Jan) 2.05"

Air Quality

Earthquake History

142 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.8. Most recent: M4.5 on Jun 3, 2025.

Mar 24, 2001 16 km SSW of Kure, Japan M6.8 118 km
Apr 17, 2024 18 km W of Uwajima, Japan M6.3 124 km
Apr 12, 2013 6 km WNW of Sumoto, Japan M5.8 140 km
Mar 13, 2019 22 km ESE of Anan, Japan M5.2 115 km
Mar 25, 2001 22 km WNW of H?j?, Japan M5.2 114 km
Apr 2, 1997 34 km WSW of ?zu, Japan M5.1 134 km
Apr 26, 2007 15 km ESE of Niihama, Japan M5.1 41 km
Jan 3, 1991 22 km W of ?zu, Japan M5.0 125 km
Aug 14, 1993 19 km SW of ?zu, Japan M5.0 117 km
Jul 5, 2011 12 km NNW of Gob?, Japan M5.0 145 km
Aug 30, 1993 16 km WSW of ?zu, Japan M4.9 117 km
Jun 16, 2022 5 km S of Komatsushimach?, Japan M4.9 95 km
Jan 9, 2001 40 km W of ?zu, Japan M4.9 141 km
Feb 26, 2024 18 km N of Yawatahama, Japan M4.9 115 km
Aug 22, 1994 39 km S of Anan, Japan M4.9 88 km
Mar 11, 2019 6 km SE of Kihoku-ch?, Japan M4.9 94 km
Jun 18, 2021 1 km ENE of ?zu, Japan M4.9 101 km
Mar 31, 1997 22 km WNW of Uwajima, Japan M4.8 125 km
Oct 4, 2011 14 km SW of Wakimachi, Japan M4.8 57 km
Oct 13, 2002 30 km WNW of Uwajima, Japan M4.8 132 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

53 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 4. Most recent: Lan (2023).

Year Name Category Closest
2023 Lan Category 2 190 km
2022 Nanmadol Category 2 283 km
2019 Francisco Category 1 256 km
2018 Jebi Category 3 67 km
2018 Trami Category 1 81 km
2018 Cimaron Category 1 89 km
2017 Lan Category 3 297 km
2017 Noru Category 1 47 km
2016 Malakas Category 2 87 km
2015 Goni Category 2 294 km
2015 Nangka Category 1 88 km
2014 Phanfone Category 2 164 km
2014 Halong Category 1 71 km
2012 Jelawat Category 1 159 km
2011 Roke Category 4 202 km
2011 Ma-on Category 1 59 km
2009 Melor Category 1 206 km
2008 Sinlaku Category 1 126 km
2007 Usagi Category 3 210 km
2007 Man-yi Category 2 125 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

9 tsunamis recorded within 500 km. Highest wave on record: 28.0 m (92 ft).

Year Location Cause Max Wave Deaths Distance
1854 NANKAIDO Earthquake 28.0 m 3,000 136 km
1707 NANKAIDO Earthquake 25.7 m 5,000 115 km
1605 NANKAIDO Earthquake 10.0 m 5,000 132 km
684 NANKAIDO Earthquake 3.0 m 123 km
1711 SEIONAIKAI, JAPAN Earthquake 2.0 m 1,000 87 km
1808 E. AWA, TOKUSHIMA PREFECTURE Earthquake 1.5 m 113 km
1498 NANKAIDO Earthquake 144 km
1361 NANKAIDO Earthquake 660 141 km
1331 OFF TANABE, WAKAYAMA PREFECTURE Earthquake 144 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

1 volcano within 200 km. Closest: Sanbesan (199 km).

Name Type Elevation Last Eruption Distance
Sanbesan Stratovolcano 1,126 m (3,694 ft) 650 199 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 42°F (6°C) 2.1 in Coldest, Driest
February 43°F (6°C) 3.5 in
March 49°F (10°C) 5.3 in
April 59°F (15°C) 8.5 in
May 66°F (19°C) 9.4 in
June 72°F (22°C) 12.8 in Wettest
July 79°F (26°C) 11.7 in
August 80°F (27°C) 4.4 in Warmest
September 75°F (24°C) 11.3 in
October 65°F (18°C) 6.6 in
November 55°F (13°C) 4.0 in
December 46°F (8°C) 2.2 in

Nankoku has a seasonal temperature swing of 38°F / from 42°F in January to 80°F in August. Total annual precipitation is 81.7 inches, with June being the wettest month (12.8") and January the driest (2.1").

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