Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tonoshō enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 40°F in January while summers reach 78°F in July. The area gets 232 sunny days per year, above the national average. Annual precipitation totals 57.4 inches (wetter than the 38-inch national average). The city sits at an elevation of 161 feet.
Temperature
40°F Jan (4°C)78°F Jul (25°C)
Annual Average
58.5°F
8% above US avg
January Average
40°F (4°C)
July Average
78°F (25°C)
Sunny Days
232 days/yr
Geography
Elevation
161 ft (49 m)
Area
28.7 sq mi (74.4 km²)
Population Density
450/sq mi
Coordinates
34.4805°N, 134.1702°W
Timezone
Asia/Tokyo
Precipitation & Snow
Annual Rainfall57.4"
51% above US avg
Snowfall0.0"
Wettest Month (Sep)9.33"
Driest Month (Dec)1.22"
Air Quality
Earthquake History
218 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M6.9.
Jan 16, 1995
8 km S of Akashi, Japan
M6.9
79 km
22 km
Oct 6, 2000
8 km ESE of Matsue, Japan
M6.7
144 km
10 km
Apr 12, 2013
6 km WNW of Sumoto, Japan
M5.8
62 km
14 km
Aug 20, 1999
22 km SE of Kainan, Japan
M5.7
124 km
66 km
Jun 17, 2018
near the south coast of western Honshu, Japan
M5.5
140 km
10 km
Aug 28, 1991
9 km SSW of Yasugich?, Japan
M5.5
130 km
13 km
Oct 8, 2000
32 km N of Sh?bara, Japan
M5.4
127 km
10 km
Sep 24, 2003
5 km WNW of Ayabe, Japan
M5.4
132 km
372 km
Sep 16, 2002
24 km SW of Kurayoshi, Japan
M5.3
98 km
10 km
Sep 3, 1997
21 km S of Yasugich?, Japan
M5.3
120 km
10 km
Jan 11, 2001
15 km E of Tottori, Japan
M5.3
113 km
33 km
Oct 8, 2000
8 km SSW of Yonago, Japan
M5.2
126 km
10 km
Mar 13, 2019
22 km ESE of Anan, Japan
M5.2
98 km
37 km
Apr 14, 2000
10 km SSW of Tanabe, Japan
M5.1
139 km
35 km
Apr 26, 2007
15 km ESE of Niihama, Japan
M5.1
92 km
50 km
Jan 16, 1995
20 km SW of Akashi, Japan
M5.0
61 km
10 km
Jul 5, 2011
12 km NNW of Gob?, Japan
M5.0
104 km
16 km
Oct 13, 1995
10 km ESE of Akashi, Japan
M4.9
88 km
18 km
Jun 16, 2022
5 km S of Komatsushimach?, Japan
M4.9
70 km
40 km
Aug 22, 1994
39 km S of Anan, Japan
M4.9
110 km
38 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
46 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 3.
Year
Name
Category
Max Wind
Closest
2023
Lan
Category 2
81 mph
166 km
2018
Jebi
Category 3
98 mph
70 km
2018
Trami
Category 1
92 mph
144 km
2018
Cimaron
Category 1
92 mph
50 km
2018
Jongdari
Category 1
75 mph
269 km
2017
Noru
Category 1
69 mph
101 km
2016
Malakas
Category 1
86 mph
197 km
2015
Nangka
Category 1
81 mph
165 km
2014
Phanfone
Category 2
92 mph
200 km
2014
Halong
Category 1
81 mph
183 km
2012
Jelawat
Category 1
92 mph
220 km
2011
Roke
Category 3
98 mph
236 km
2011
Ma-on
Category 1
86 mph
106 km
2009
Melor
Category 1
86 mph
230 km
2008
Sinlaku
Category 1
75 mph
199 km
2007
Usagi
Category 2
92 mph
242 km
2007
Man-yi
Category 1
81 mph
235 km
2005
Nabi
Category 1
75 mph
271 km
2004
Songda
Category 2
86 mph
202 km
2004
Chaba
Category 2
81 mph
112 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
8 tsunamis recorded within 500 km.
Highest wave on record: 2.0 m (7 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
1711
SEIONAIKAI, JAPAN
Earthquake
2.0 m
1,000
25 km
1510
OSAKA BAY
Earthquake
2.0 m
—
113 km
1808
E. AWA, TOKUSHIMA PREFECTURE
Earthquake
1.5 m
—
87 km
1995
KOBE, JAPAN
Earthquake
0.3 m
6,434
83 km
1791
OASAKA BAY
Earthquake
—
—
113 km
1498
NANKAIDO
Earthquake
—
—
145 km
1331
OFF TANABE, WAKAYAMA PREFECTURE
Earthquake
—
—
129 km
745
OSAKA BAY, JAPAN
Earthquake
—
—
104 km
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km.
Closest: Sanbesan (159 km).
Name
Type
Elevation
Last Eruption
Distance
Sanbesan
Stratovolcano
1,126 m (3,694 ft)
650
159 km
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
40°F (4°C)
1.5 in
Coldest
February
40°F (4°C)
2.1 in
March
45°F (7°C)
3.5 in
April
55°F (13°C)
5.6 in
May
63°F (17°C)
5.8 in
June
70°F (21°C)
8.8 in
July
78°F (25°C)
7.2 in
August
80°F (27°C)
4.8 in
Warmest
September
73°F (23°C)
9.3 in
Wettest
October
63°F (17°C)
4.6 in
November
53°F (12°C)
3.0 in
December
44°F (7°C)
1.2 in
Driest
Tonoshō has a seasonal temperature swing of 40°F / from 40°F in January to 80°F in August. Total annual precipitation is 57.4 inches, with September being the wettest month (9.3") and December the driest (1.2").