Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Namegata enjoys a temperate climate with an average annual temperature of 56°F (14°C). Winters average 37°F in January while summers reach 73°F in July. The area gets 238 sunny days per year, above the national average. Annual precipitation totals 54.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 33 feet.
Temperature
37°F Jan (3°C)73°F Jul (23°C)
Annual Average
56.4°F
4% above US avg
January Average
37°F (3°C)
July Average
73°F (23°C)
Sunny Days
238 days/yr
Geography
Elevation
33 ft (10 m)
Area
85.9 sq mi (222.5 km²)
Population Density
375/sq mi
Coordinates
36.0071°N, 140.4962°W
Timezone
Asia/Tokyo
Precipitation & Snow
Annual Rainfall54.2"
43% above US avg
Snowfall0.0"
Wettest Month (Oct)7.17"
Driest Month (Jan)1.73"
Air Quality
Earthquake History
4,030 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M7.9.
Mar 11, 2011
47 km E of ?arai, Japan
M7.9
63 km
43 km
May 7, 2008
78 km NE of Hasaki, Japan
M6.9
94 km
27 km
Apr 11, 2011
17 km SSW of Ishikawa, Japan
M6.6
111 km
11 km
Mar 11, 2011
81 km NE of Hasaki, Japan
M6.5
97 km
7 km
Mar 11, 2011
115 km ENE of Hasaki, Japan
M6.5
141 km
49 km
Mar 11, 2011
108 km ESE of Kitaibaraki, Japan
M6.4
132 km
32 km
Jul 30, 2011
13 km SSE of Iwaki, Japan
M6.3
112 km
38 km
Mar 11, 2011
92 km ENE of Hasaki, Japan
M6.3
118 km
21 km
Mar 11, 2011
near the east coast of Honshu, Japan
M6.3
135 km
25 km
Jun 1, 1990
near the east coast of Honshu, Japan
M6.3
56 km
67 km
Sep 11, 1996
23 km SSE of Hasaki, Japan
M6.2
66 km
55 km
Jun 3, 2000
6 km SE of Narut?, Japan
M6.2
51 km
62 km
Apr 11, 2011
23 km SE of T?gane, Japan
M6.2
66 km
15 km
Mar 11, 2011
70 km ESE of Kitaibaraki, Japan
M6.2
109 km
40 km
May 7, 2008
80 km NE of Hasaki, Japan
M6.2
96 km
19 km
Apr 21, 2011
6 km WNW of T?gane, Japan
M6.2
51 km
43 km
Jun 5, 2012
75 km ESE of ?hara, Japan
M6.1
132 km
15 km
Aug 5, 1990
43 km E of ?arai, Japan
M6.1
62 km
27 km
Mar 13, 2011
72 km E of Hasaki, Japan
M6.1
108 km
8 km
Sep 15, 2011
68 km E of ?arai, Japan
M6.1
81 km
28 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
38 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 3.
Year
Name
Category
Max Wind
Closest
2025
Nakri
Category 1
—
294 km
2024
Ampil
Category 3
98 mph
176 km
2024
Jebi
Category 1
75 mph
190 km
2021
Mindulle
Category 1
86 mph
270 km
2019
Faxai
Category 3
98 mph
29 km
2019
Hagibis
Category 2
92 mph
99 km
2018
Shanshan
Category 1
75 mph
145 km
2018
Jongdari
Category 1
81 mph
245 km
2016
Lionrock
Category 1
81 mph
190 km
2016
Mindulle
Category 1
75 mph
210 km
2014
Phanfone
Category 1
75 mph
226 km
2011
Roke
Category 1
92 mph
117 km
2009
Krovanh
Category 1
69 mph
284 km
2007
Fitow
Category 1
81 mph
125 km
2005
Saola
Category 2
86 mph
253 km
2005
Mawar
Category 2
81 mph
39 km
2004
Ma-on
Category 3
92 mph
77 km
2003
Choi-wan
Category 3
81 mph
273 km
2002
Higos
Category 2
86 mph
55 km
2001
Vipa
Category 1
69 mph
248 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
20 tsunamis recorded within 500 km.
Highest wave on record: 13.0 m (43 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
1923
SAGAMI BAY
Earthquake
13.0 m
105,385
135 km
1677
OFF SE. BOSO PENINSULA
Earthquake
8.0 m
500
144 km
1495
KAMAKURA, SAGAMI BAY, TOKAIDO
Earthquake
5.0 m
200
135 km
1732
KUJUKURI BEACH, JAPAN
Earthquake
2.0 m
—
94 km
1670
BOSO, JAPAN
Earthquake
2.0 m
—
72 km
1938
JAPAN TRENCH
Earthquake
0.8 m
—
112 km
1938
SANRIKU
Earthquake
0.8 m
—
142 km
1982
IBARAKI, JAPAN
Earthquake
0.4 m
—
110 km
1961
KASHIMA, JAPAN
Earthquake
0.4 m
—
126 km
1961
KASHIMA, JAPAN
Earthquake
0.4 m
—
128 km
1923
KASHIMA, JAPAN
Earthquake
0.4 m
—
136 km
1923
RYUKYU ISLANDS
Earthquake
0.3 m
—
126 km
1896
KASHIMA, JAPAN
Earthquake
0.3 m
—
71 km
1935
JAPAN
Earthquake
0.2 m
—
104 km
1855
TOKAIDO
Earthquake
—
6,757
74 km
1782
ODAWARA, SAGAMI BAY
Eruption + Earthquake
—
—
124 km
1642
BOSO, JAPAN
Earthquake
—
—
90 km
1633
SAGAMI BAY
Earthquake
—
150
148 km
1602
BOSO, JAPAN
Eruption + Earthquake
—
—
101 km
1257
SAGAMI BAY, JAPAN
Earthquake
—
—
127 km
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km.
Closest: Takaharayama (118 km).
Name
Type
Elevation
Last Eruption
Distance
Takaharayama
Stratovolcano
1,795 m (5,889 ft)
-4570
118 km
Nantaisan
Stratovolcano
2,486 m (8,156 ft)
-9540
123 km
Omanago Group
Lava dome(s)
2,341 m (7,680 ft)
-3050
125 km
Akagisan
Stratovolcano
1,828 m (5,997 ft)
Unknown
132 km
Nasudake
Stratovolcano(es)
1,915 m (6,283 ft)
1963
133 km
Nikko-Shiranesan
Shield
2,578 m (8,458 ft)
1952
133 km
Hiuchigatake
Stratovolcano
2,356 m (7,730 ft)
1544
151 km
Harunasan
Stratovolcano
1,449 m (4,754 ft)
550
157 km
Hakoneyama
Complex
1,438 m (4,718 ft)
2015
159 km
Izu-Oshima
Stratovolcano
758 m (2,487 ft)
1990
174 km
Fujisan
Stratovolcano
3,776 m (12,388 ft)
1708
175 km
Izu-Tobu
Pyroclastic cone(s)
1,406 m (4,613 ft)
1989
177 km
Numazawa
Shield
835 m (2,740 ft)
-3400
180 km
Bandaisan
Stratovolcano
1,816 m (5,958 ft)
1888
181 km
Asamayama
Complex
2,568 m (8,425 ft)
2019
183 km
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
37°F (3°C)
1.7 in
Coldest, Driest
February
38°F (3°C)
2.7 in
March
44°F (7°C)
3.8 in
April
54°F (12°C)
4.6 in
May
62°F (16°C)
4.9 in
June
67°F (20°C)
6.4 in
July
73°F (23°C)
5.2 in
August
77°F (25°C)
4.8 in
Warmest
September
71°F (22°C)
7.1 in
October
61°F (16°C)
7.2 in
Wettest
November
51°F (11°C)
3.6 in
December
42°F (5°C)
2.1 in
Namegata has a seasonal temperature swing of 40°F / from 37°F in January to 77°F in August. Total annual precipitation is 54.2 inches, with October being the wettest month (7.2") and January the driest (1.7").