Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ojiya experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 30°F in January while summers reach 75°F in July. The area gets 176 sunny days per year. Annual precipitation totals 88.5 inches (wetter than the 38-inch national average). The area receives 19.9 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 236 feet.
Temperature
30°F Jan (-1°C)75°F Jul (24°C)
Annual Average
52.8°F
2% below US avg
January Average
30°F (-1°C)
July Average
75°F (24°C)
Sunny Days
176 days/yr
Geography
Elevation
236 ft (72 m)
Area
86.0 sq mi (222.7 km²)
Population Density
404/sq mi
Coordinates
37.3000°N, 138.8000°W
Timezone
Asia/Tokyo
Precipitation & Snow
Annual Rainfall88.5"
133% above US avg
Snowfall19.9"
Wettest Month (Dec)12.72"
Driest Month (May)4.06"
Air Quality
Earthquake History
628 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M7.5.
Jan 1, 2024
2024 Noto Peninsula, Japan Earthquake
M7.5
137 km
10 km
Jul 16, 2007
20 km NNW of Kashiwazaki, Japan
M6.6
41 km
12 km
Feb 7, 1993
69 km NNE of Nanao, Japan
M6.6
142 km
11 km
Apr 11, 2011
17 km SSW of Ishikawa, Japan
M6.6
146 km
11 km
Mar 11, 2011
13 km E of Arai, Japan
M6.2
49 km
9 km
May 5, 2023
49 km NE of Anamizu, Japan
M6.2
135 km
10 km
Apr 12, 2011
8 km WSW of Ishikawa, Japan
M5.9
141 km
11 km
Jan 9, 2024
53 km WSW of Sado, Japan
M5.9
109 km
10 km
Apr 16, 2011
6 km ENE of Tanuma, Japan
M5.8
128 km
77 km
Feb 25, 2013
29 km NE of Numata, Japan
M5.8
64 km
10 km
Jan 1, 2024
42 km NE of Anamizu, Japan
M5.8
139 km
10 km
Dec 3, 1996
35 km SE of Muramatsu, Japan
M5.7
64 km
139 km
Jul 16, 2007
16 km NNW of Kashiwazaki, Japan
M5.7
37 km
15 km
Mar 11, 2011
eastern Honshu, Japan
M5.7
60 km
12 km
Mar 19, 2011
8 km WNW of Daigo, Japan
M5.7
142 km
6 km
Jun 2, 2024
40 km NE of Anamizu, Japan
M5.7
136 km
9 km
May 5, 2023
43 km NE of Anamizu, Japan
M5.6
136 km
10 km
Jan 1, 2024
54 km NE of Anamizu, Japan
M5.6
126 km
10 km
Jan 1, 2024
56 km NE of Anamizu, Japan
M5.5
125 km
10 km
Apr 11, 2011
8 km WSW of Iiyama, Japan
M5.5
71 km
17 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
26 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 3.
Year
Name
Category
Max Wind
Closest
2019
Faxai
Category 2
92 mph
214 km
2019
Hagibis
Category 1
92 mph
157 km
2018
Jebi
Category 1
86 mph
195 km
2014
Phanfone
Category 1
75 mph
269 km
2011
Roke
Category 1
86 mph
160 km
2007
Fitow
Category 1
75 mph
192 km
2005
Mawar
Category 2
75 mph
223 km
2004
Ma-on
Category 3
92 mph
209 km
2004
Songda
Category 1
75 mph
298 km
2004
Chaba
Category 1
69 mph
248 km
2003
Etau
Category 1
52 mph
300 km
2002
Higos
Category 1
81 mph
184 km
2001
Danas
Category 1
63 mph
174 km
2000
Kirogi
Category 1
81 mph
239 km
1998
Vicki
Category 2
69 mph
133 km
1998
Zeb
Category 1
58 mph
290 km
1998
Stella
Category 1
69 mph
146 km
1996
Kirk
Category 1
63 mph
214 km
1995
Ryan
Category 1
40 mph
272 km
1994
Orchid
Category 1
69 mph
186 km
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
13 tsunamis recorded within 500 km.
Highest wave on record: 11.3 m (37 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
2024
HONSHU: W COAST
Eruption + Earthquake
11.3 m
549
137 km
1964
NW. HONSHU ISLAND
Earthquake
5.8 m
36
126 km
1993
HONSHU ISLAND
Earthquake
0.5 m
-
142 km
1987
HONSHU ISLAND
Earthquake
0.2 m
-
84 km
2023
NOTO PENINSULA, JAPAN
Earthquake
0.1 m
1
135 km
2007
HONSHU: W COAST
Earthquake
-
15
41 km
1802
NW. HONSHU ISLAND
Earthquake
-
19
63 km
1762
NW. HONSHU ISLAND
Earthquake
-
-
89 km
1751
NW. HONSHU ISLAND
Eruption + Earthquake
-
2,100
63 km
1614
NIIGATA PREFECTURE
Earthquake
-
-
74 km
1448
SADO, JAPAN
Earthquake
-
-
58 km
887
NIIGATA
Earthquake
-
2,000
66 km
863
NW. HONSHU ISLAND
Eruption + Earthquake
-
-
74 km
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km.
Closest: Hiuchigatake (58 km).
Name
Type
Elevation
Last Eruption
Distance
Hiuchigatake
Stratovolcano
2,356 m (7,730 ft)
1544
58 km
Numazawa
Shield
835 m (2,740 ft)
-3400
70 km
Shiga
Shield(s)
2,041 m (6,696 ft)
Unknown
73 km
Nikko-Shiranesan
Shield
2,578 m (8,458 ft)
1952
76 km
Myokosan
Stratovolcano
2,454 m (8,051 ft)
-750
76 km
Kusatsu-Shiranesan
Stratovolcano(es)
2,165 m (7,103 ft)
2018
80 km
Niigata-Yakeyama
Lava dome
2,400 m (7,874 ft)
1998
80 km
Omanago Group
Lava dome(s)
2,341 m (7,680 ft)
-3050
84 km
Nantaisan
Stratovolcano
2,486 m (8,156 ft)
-9540
85 km
Akagisan
Stratovolcano
1,828 m (5,997 ft)
Unknown
89 km
Harunasan
Stratovolcano
1,449 m (4,754 ft)
550
92 km
Takaharayama
Stratovolcano
1,795 m (5,889 ft)
-4570
97 km
Asamayama
Complex
2,568 m (8,425 ft)
2019
102 km
Nasudake
Stratovolcano(es)
1,915 m (6,283 ft)
1963
105 km
Bandaisan
Stratovolcano
1,816 m (5,958 ft)
1888
117 km
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
30°F (-1°C)
11.9 in
Coldest
February
31°F (-1°C)
8.1 in
March
36°F (2°C)
5.5 in
April
48°F (9°C)
4.4 in
May
59°F (15°C)
4.1 in
Driest
June
67°F (19°C)
5.6 in
July
75°F (24°C)
7.5 in
August
77°F (25°C)
5.6 in
Warmest
September
69°F (21°C)
7.6 in
October
58°F (14°C)
7.1 in
November
47°F (9°C)
8.5 in
December
37°F (3°C)
12.7 in
Wettest
Ojiya has a seasonal temperature swing of 47°F / from 30°F in January to 77°F in August. Total annual precipitation is 88.5 inches, with December being the wettest month (12.7") and May the driest (4.1").