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Tosa, Japan

Full City Profile

4.1 /5.0
A Great
25,732 Population 70/sq mi density
43 ft Elevation 13 meters
59°F Avg Temperature 15°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
Tosa enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 40°F in January while summers reach 77°F in July. The area gets 187 sunny days per year. Annual precipitation totals 82.4 inches. The area receives 0.0 inches of snow annually.

Temperature

40°F Jan (4°C) 77°F Jul (25°C)
Annual Average59.1°F
9% above US avg
January Average40°F (4°C)
July Average77°F (25°C)
Sunny Days187 days/yr

Geography

Elevation43 ft (13 m)
Area366.8 sq mi (950.1 km²)
Population Density70/sq mi
Coordinates33.5048°N, 133.4448°W
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 82.4"
117% above US avg
Snowfall 0.0"
Wettest Month (Jun) 13.03"
Driest Month (Jan) 2.01"

Air Quality

Earthquake History

132 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 M6.8 107 km
Apr 17, 2024 18 km W of Uwajima, Japan M6.3 104 km
Mar 25, 2001 22 km WNW of H?j?, Japan M5.2 101 km
Mar 13, 2019 22 km ESE of Anan, Japan M5.2 135 km
Apr 2, 1997 34 km WSW of ?zu, Japan M5.1 115 km
Apr 26, 2007 15 km ESE of Niihama, Japan M5.1 44 km
Feb 18, 2018 27 km SE of Saiki, Japan M5.0 145 km
Aug 14, 1993 19 km SW of ?zu, Japan M5.0 98 km
Jun 20, 2017 15 km SE of Saiki, Japan M5.0 149 km
Jan 3, 1991 22 km W of ?zu, Japan M5.0 105 km
Jun 18, 2021 1 km ENE of ?zu, Japan M4.9 82 km
Jan 9, 2001 40 km W of ?zu, Japan M4.9 123 km
Aug 30, 1993 16 km WSW of ?zu, Japan M4.9 98 km
Mar 11, 2019 6 km SE of Kihoku-ch?, Japan M4.9 74 km
Jun 16, 2022 5 km S of Komatsushimach?, Japan M4.9 115 km
Mar 8, 2020 28 km NE of Usuki, Japan M4.9 136 km
Aug 22, 1994 39 km S of Anan, Japan M4.9 107 km
Feb 26, 2024 18 km N of Yawatahama, Japan M4.9 97 km
Aug 15, 2016 26 km ENE of Kitsuki, Japan M4.9 144 km
May 10, 2019 45 km SW of Sukumo, Japan M4.8 137 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 1 210 km
2022 Nanmadol Category 2 264 km
2019 Francisco Category 1 238 km
2018 Jebi Category 3 83 km
2018 Trami Category 1 95 km
2018 Cimaron Category 1 109 km
2017 Noru Category 1 54 km
2016 Malakas Category 2 79 km
2015 Goni Category 3 276 km
2015 Nangka Category 1 97 km
2014 Phanfone Category 2 166 km
2014 Halong Category 1 58 km
2012 Jelawat Category 1 169 km
2011 Roke Category 4 212 km
2011 Ma-on Category 1 61 km
2009 Melor Category 1 220 km
2008 Sinlaku Category 1 127 km
2007 Usagi Category 3 189 km
2007 Man-yi Category 2 108 km
2006 Shanshan Category 1 287 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

6 tsunamis recorded within 500 km. Highest wave on record: 25.7 m (84 ft).

Year Location Cause Max Wave Deaths Distance
1707 NANKAIDO Earthquake 25.7 m 5,000 130 km
1605 NANKAIDO Earthquake 10.0 m 5,000 147 km
684 NANKAIDO Earthquake 3.0 m 123 km
1711 SEIONAIKAI, JAPAN Earthquake 2.0 m 1,000 102 km
1808 E. AWA, TOKUSHIMA PREFECTURE Earthquake 1.5 m 133 km
1899 SEIKAIDO Earthquake 139 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

2 volcanoes within 200 km. Closest: Yufu-Tsurumi (192 km).

Name Type Elevation Last Eruption Distance
Yufu-Tsurumi Lava dome(s) 1,584 m (5,197 ft) 867 192 km
Sanbesan Stratovolcano 1,126 m (3,694 ft) 650 197 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 40°F (4°C) 2.0 in Coldest, Driest
February 41°F (5°C) 3.5 in
March 47°F (9°C) 5.4 in
April 57°F (14°C) 8.6 in
May 64°F (18°C) 9.5 in
June 70°F (21°C) 13.0 in Wettest
July 77°F (25°C) 12.2 in
August 79°F (26°C) 4.3 in Warmest
September 73°F (23°C) 11.2 in
October 63°F (17°C) 6.5 in
November 54°F (12°C) 3.9 in
December 44°F (7°C) 2.2 in

Tosa has a seasonal temperature swing of 39°F / from 40°F in January to 79°F in August. Total annual precipitation is 82.4 inches, with June being the wettest month (13.0") and January the driest (2.0").

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