Asso, Japan

Full City Profile

15,236 Population 502/sq mi density
43 ft Elevation 13 meters
60°F Avg Temperature 16°C
Asso enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 41°F in January while summers reach 77°F in July. Annual precipitation totals 78.9 inches. The area receives 0.0 inches of snow annually.

Temperature

41°F Jan (5°C) 77°F Jul (25°C)
Annual Average59.9°F
11% above US avg
January Average41°F (5°C)
July Average77°F (25°C)

Geography

Elevation43 ft (13 m)
Area30.4 sq mi (78.7 km²)
Population Density502/sq mi
Coordinates33.7000°N, 135.4167°E
TimezoneAsia/Tokyo

Precipitation & Snow

Annual Rainfall 78.9"
108% above US avg
Snowfall 0.0"
Wettest Month (Jun) 11.69"
Driest Month (Dec) 2.28"

Air Quality

Earthquake History

366 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.2. Most recent: M4.2 on Mar 6, 2025.

Sep 5, 2004 94 km SE of Shing?, Japan M7.2 132 km
Jan 16, 1995 8 km S of Akashi, Japan M6.9 105 km
Apr 1, 2016 54 km SE of Shing?, Japan M5.9 97 km
Jun 1, 1998 17 km SW of Owase, Japan M5.8 68 km
Feb 26, 2025 38 km ESE of Shingū, Japan M5.8 89 km
Apr 12, 2013 6 km WNW of Sumoto, Japan M5.8 92 km
Sep 5, 2004 93 km SE of Shing?, Japan M5.7 138 km
Aug 20, 1999 22 km SE of Kainan, Japan M5.7 36 km
Sep 10, 2004 88 km SSE of Shing?, Japan M5.6 123 km
Aug 1, 2007 42 km ESE of Owase, Japan M5.5 113 km
Oct 30, 2000 western Honshu, Japan M5.5 99 km
Jun 17, 2018 near the south coast of western Honshu, Japan M5.5 127 km
Apr 23, 2001 98 km SE of Shing?, Japan M5.4 134 km
Jan 6, 2004 36 km S of Ise, Japan M5.3 126 km
Mar 13, 2019 22 km ESE of Anan, Japan M5.2 53 km
Oct 20, 1991 45 km SSW of Tanabe, Japan M5.1 43 km
Jul 5, 2003 122 km S of Shing?, Japan M5.1 130 km
Jun 10, 2009 7 km WSW of Ise, Japan M5.1 140 km
Apr 14, 2000 10 km SSW of Tanabe, Japan M5.1 11 km
Apr 15, 2007 11 km ENE of Ueno-ebisumachi, Japan M5.1 144 km
Source: USGS (M2.5+, 1990-2025)

Hurricane History

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

Year Name Category Closest
2025 Nakri Category 1 244 km
2023 Lan Category 2 26 km
2019 Hagibis Category 3 235 km
2018 Jebi Category 3 76 km
2018 Trami Category 1 14 km
2018 Cimaron Category 1 76 km
2018 Jongdari Category 1 179 km
2017 Lan Category 2 169 km
2017 Noru Category 1 44 km
2016 Malakas Category 1 204 km
2015 Nangka Category 1 130 km
2014 Phanfone Category 2 78 km
2014 Halong Category 1 211 km
2012 Jelawat Category 1 131 km
2011 Roke Category 4 95 km
2011 Ma-on Category 1 76 km
2010 Chaba Category 1 267 km
2009 Melor Category 1 113 km
2008 Sinlaku Category 1 76 km
2007 Fitow Category 1 294 km
Source: NOAA IBTrACS (Cat 1+, 1980-2026)

Tsunami History

20 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 77 km
1707 NANKAIDO Earthquake 25.7 m 5,000 80 km
1605 NANKAIDO Earthquake 10.0 m 5,000 91 km
1946 HONSHU: S COAST Earthquake 6.6 m 1,362 79 km
1711 SEIONAIKAI, JAPAN Earthquake 2.0 m 1,000 147 km
1520 KII, KUMANANONADA Earthquake 2.0 m - 83 km
1510 OSAKA BAY Earthquake 2.0 m - 100 km
1408 KUMANONADA Earthquake 2.0 m - 138 km
1403 KUMANONADA Earthquake 2.0 m - 100 km
922 KUMANONADA Earthquake 2.0 m - 119 km
1808 E. AWA, TOKUSHIMA PREFECTURE Earthquake 1.5 m - 61 km
2004 SOUTH COAST HONSHU ISLAND Earthquake 0.6 m - 132 km
1948 TOKAIDO Earthquake 0.6 m - 69 km
1995 KOBE, JAPAN Earthquake 0.3 m 6,434 104 km
1791 OASAKA BAY Earthquake - - 89 km
1708 TOKAIDO Earthquake - - 150 km
1498 NANKAIDO Earthquake - - 30 km
1361 NANKAIDO Earthquake - 660 87 km
1360 KUMANONADA Earthquake - - 80 km
1331 OFF TANABE, WAKAYAMA PREFECTURE Earthquake - - 20 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 41°F (5°C) 2.7 in Coldest
February 42°F (6°C) 3.2 in
March 48°F (9°C) 5.0 in
April 57°F (14°C) 7.4 in
May 65°F (18°C) 8.0 in
June 71°F (21°C) 11.7 in Wettest
July 77°F (25°C) 8.5 in
August 79°F (26°C) 7.6 in Warmest
September 74°F (23°C) 10.9 in
October 64°F (18°C) 6.7 in
November 55°F (13°C) 4.8 in
December 46°F (8°C) 2.3 in Driest

Asso has a seasonal temperature swing of 38°F / from 41°F in January to 79°F in August. Total annual precipitation is 78.9 inches, with June being the wettest month (11.7") and December the driest (2.3").

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