Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kumagawa experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 35°F in January while summers reach 75°F in July. The area gets 198 sunny days per year. Annual precipitation totals 76.1 inches (wetter than the 38-inch national average). The area receives 10.9 inches of snow annually. The city sits at an elevation of 276 feet.
Temperature
35°F Jan (2°C)75°F Jul (24°C)
Annual Average
55.0°F
2% above US avg
January Average
35°F (2°C)
July Average
75°F (24°C)
Sunny Days
198 days/yr
Geography
Elevation
276 ft (84 m)
Area
386.9 sq mi (1,002.1 km²)
Population Density
36/sq mi
Coordinates
35.4436°N, 135.9014°W
Timezone
Asia/Tokyo
Precipitation & Snow
Annual Rainfall76.1"
100% above US avg
Snowfall10.9"
Wettest Month (Jun)9.02"
Driest Month (Nov)4.65"
Air Quality
Earthquake History
334 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
125 km
22 km
Apr 11, 1990
11 km ENE of Maizuru, Japan
M6.1
41 km
362 km
Aug 7, 1992
21 km N of Miyazu, Japan
M5.8
75 km
358 km
Apr 21, 2000
27 km NNE of Maizuru, Japan
M5.5
45 km
347 km
Oct 30, 2000
western Honshu, Japan
M5.5
130 km
35 km
Jun 17, 2018
near the south coast of western Honshu, Japan
M5.5
73 km
10 km
Aug 26, 2010
25 km ENE of Katsuyama, Japan
M5.4
109 km
278 km
Sep 24, 2003
5 km WNW of Ayabe, Japan
M5.4
66 km
372 km
Jan 11, 2001
15 km E of Tottori, Japan
M5.3
136 km
33 km
May 9, 2022
7 km NE of Toba, Japan
M5.3
136 km
329 km
Apr 22, 1998
18 km SE of Hikone, Japan
M5.2
57 km
33 km
Jan 30, 1996
67 km NNE of Miyazu, Japan
M5.2
91 km
361 km
Jun 10, 2009
7 km WSW of Ise, Japan
M5.1
128 km
352 km
Mar 16, 1999
10 km WNW of Kitahama, Japan
M5.1
27 km
33 km
Feb 7, 1996
10 km SE of Ono, Japan
M5.1
81 km
42 km
Apr 15, 2007
11 km ENE of Ueno-ebisumachi, Japan
M5.1
77 km
16 km
May 28, 1994
12 km WNW of Nagahama, Japan
M5.1
22 km
49 km
Apr 16, 1994
16 km ENE of Maizuru, Japan
M5.0
37 km
358 km
Jan 16, 1995
20 km SW of Akashi, Japan
M5.0
140 km
10 km
Dec 22, 1994
6 km NNW of Takatsuki, Japan
M4.9
66 km
370 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
43 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 4.
Year
Name
Category
Max Wind
Closest
2023
Lan
Category 1
69 mph
195 km
2019
Hagibis
Category 2
92 mph
272 km
2018
Jebi
Category 2
98 mph
28 km
2018
Trami
Category 1
92 mph
186 km
2018
Cimaron
Category 1
86 mph
144 km
2018
Jongdari
Category 1
81 mph
151 km
2017
Lan
Category 1
98 mph
257 km
2017
Noru
Category 1
69 mph
176 km
2014
Phanfone
Category 1
86 mph
187 km
2011
Roke
Category 3
92 mph
180 km
2011
Ma-on
Category 1
86 mph
237 km
2009
Melor
Category 1
86 mph
173 km
2008
Sinlaku
Category 1
75 mph
235 km
2007
Fitow
Category 1
81 mph
282 km
2005
Mawar
Category 2
86 mph
264 km
2004
Ma-on
Category 4
92 mph
253 km
2004
Songda
Category 1
81 mph
242 km
2004
Chaba
Category 1
69 mph
138 km
2003
Etau
Category 2
86 mph
32 km
2001
Danas
Category 2
81 mph
264 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
12 tsunamis recorded within 500 km.
Highest wave on record: 11.3 m (37 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
1927
SW. HONSHU ISLAND
Eruption + Earthquake
11.3 m
3,022
75 km
1510
OSAKA BAY
Earthquake
2.0 m
—
104 km
1909
ANEGAWA, JAPAN
Earthquake
1.8 m
41
36 km
1945
TOKAIDO
Earthquake
1.0 m
2,306
144 km
1995
KOBE, JAPAN
Earthquake
0.3 m
6,434
122 km
1799
SW. HONSHU ISLAND
Earthquake
—
—
143 km
1791
OASAKA BAY
Earthquake
—
—
114 km
1726
KATSUYAMA
Earthquake
—
—
96 km
1666
AICHI PREFECTURE
Earthquake
—
—
95 km
1586
ISE BAY
Earthquake
—
8,000
95 km
745
OSAKA BAY, JAPAN
Earthquake
—
—
109 km
701
SEA OF JAPAN
Earthquake
—
—
54 km
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
6 volcanoes within 200 km.
Closest: Hakusan (111 km).
Name
Type
Elevation
Last Eruption
Distance
Hakusan
Stratovolcano
2,702 m (8,865 ft)
1659
111 km
Ontakesan
Complex
3,067 m (10,062 ft)
2014
151 km
Norikuradake
Stratovolcano(es)
3,026 m (9,928 ft)
-50
166 km
Yakedake
Stratovolcano(es)
2,455 m (8,054 ft)
1995
175 km
Washiba-Kumonotaira
Shield(s)
2,924 m (9,593 ft)
Unknown
186 km
Midagahara
Stratovolcano
2,621 m (8,599 ft)
1839
197 km
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
35°F (2°C)
5.9 in
Coldest
February
35°F (2°C)
5.0 in
March
41°F (5°C)
5.4 in
April
52°F (11°C)
5.9 in
May
60°F (16°C)
6.1 in
June
67°F (20°C)
9.0 in
Wettest
July
75°F (24°C)
9.0 in
August
77°F (25°C)
6.0 in
Warmest
September
70°F (21°C)
8.7 in
October
59°F (15°C)
5.4 in
November
49°F (10°C)
4.7 in
Driest
December
40°F (4°C)
5.2 in
Kumagawa has a seasonal temperature swing of 43°F / from 35°F in January to 77°F in August. Total annual precipitation is 76.2 inches, with June being the wettest month (9.0") and November the driest (4.7").