Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ginowan has a warm climate with an average annual temperature of 73°F (23°C). Winters average 62°F in January while summers reach 84°F in July. The area gets 186 sunny days per year. Annual precipitation totals 82.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 344 feet.
Temperature
62°F Jan (17°C)84°F Jul (29°C)
Annual Average
73.2°F
36% above US avg
January Average
62°F (17°C)
July Average
84°F (29°C)
Sunny Days
186 days/yr
Geography
Elevation
344 ft (105 m)
Area
7.6 sq mi (19.8 km²)
Population Density
13,105/sq mi
Coordinates
26.2627°N, 127.7615°W
Timezone
Asia/Tokyo
Precipitation & Snow
Annual Rainfall82.9"
118% above US avg
Snowfall0.0"
Wettest Month (Aug)9.65"
Driest Month (Dec)4.25"
Air Quality
Earthquake History
932 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M7.0.
Feb 26, 2010
70 km SE of Katsuren-haebaru, Japan
M7.0
76 km
25 km
Mar 2, 2014
109 km NW of Nago, Japan
M6.5
136 km
119 km
Jul 22, 2004
91 km E of Nago, Japan
M6.1
116 km
21 km
Apr 14, 1991
82 km NW of Nago, Japan
M6.0
105 km
83 km
Aug 7, 2007
136 km WNW of Nago, Japan
M6.0
147 km
18 km
May 1, 2023
69 km ESE of Katsuren-haebaru, Japan
M5.9
76 km
9 km
Jul 31, 2007
134 km NW of Nago, Japan
M5.9
148 km
10 km
Jun 2, 1996
102 km NNE of Nago, Japan
M5.8
148 km
42 km
May 17, 1990
13 km W of Nago, Japan
M5.8
41 km
33 km
Apr 20, 2007
102 km NNE of Nago, Japan
M5.7
148 km
42 km
Jun 13, 2013
90 km E of Nago, Japan
M5.6
116 km
20 km
Feb 8, 2022
Ryukyu Islands, Japan
M5.6
139 km
10 km
Apr 13, 2022
145 km WNW of Naha, Japan
M5.6
150 km
8 km
Feb 21, 2022
143 km WNW of Naha, Japan
M5.6
148 km
11 km
Jun 3, 2022
140 km WNW of Naha, Japan
M5.6
145 km
10 km
May 1, 1993
46 km WNW of Naha, Japan
M5.5
52 km
55 km
May 7, 2022
137 km WNW of Naha, Japan
M5.5
142 km
10 km
Apr 11, 1997
66 km ESE of Katsuren-haebaru, Japan
M5.5
75 km
33 km
Apr 9, 1997
69 km ESE of Katsuren-haebaru, Japan
M5.5
78 km
33 km
May 5, 2011
57 km ESE of Katsuren-haebaru, Japan
M5.5
65 km
10 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
103 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 5.
Year
Name
Category
Max Wind
Closest
2024
Bebinca
Category 1
75 mph
295 km
2023
Khanun
Category 4
109 mph
91 km
2022
Hinnamnor
Category 4
115 mph
144 km
2021
In-fa
Category 2
98 mph
230 km
2020
Maysak
Category 4
109 mph
127 km
2020
Bavi
Category 2
86 mph
193 km
2019
Lingling
Category 4
109 mph
256 km
2019
Neoguri
Category 2
81 mph
224 km
2019
Tapah
Category 1
75 mph
249 km
2018
Maria
Category 3
109 mph
254 km
2018
Trami
Category 2
98 mph
39 km
2018
Prapiroon
Category 1
75 mph
96 km
2018
Kong-rey
Category 1
75 mph
147 km
2017
Talim
Category 3
104 mph
247 km
2017
Saola
Category 1
69 mph
113 km
2016
Chaba
Category 5
132 mph
116 km
2016
Namtheun
Category 3
81 mph
254 km
2015
Chan-hom
Category 4
104 mph
174 km
2015
Goni
Category 4
115 mph
134 km
2015
Noul
Category 1
75 mph
228 km
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
2 tsunamis recorded within 500 km.
Highest wave on record: 1.2 m (4 ft).
Year
Location
Cause
Max Wave
Deaths
Distance
1768
RYUKYU ISLANDS
Earthquake
1.2 m
-
27 km
2010
RYUKYU ISLANDS
Earthquake
0.1 m
-
76 km
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km.
Closest: Io-Torishima (186 km).
Name
Type
Elevation
Last Eruption
Distance
Io-Torishima
Complex
212 m (696 ft)
1968
186 km
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
62°F (17°C)
4.8 in
Coldest
February
62°F (17°C)
5.0 in
March
66°F (19°C)
6.7 in
April
71°F (21°C)
7.4 in
May
75°F (24°C)
9.5 in
June
80°F (27°C)
9.1 in
July
84°F (29°C)
6.9 in
Warmest
August
83°F (29°C)
9.7 in
Wettest
September
82°F (28°C)
7.8 in
October
77°F (25°C)
6.7 in
November
71°F (22°C)
5.2 in
December
65°F (19°C)
4.3 in
Driest
Ginowan has a seasonal temperature swing of 22°F / from 62°F in January to 84°F in July. Total annual precipitation is 82.9 inches, with August being the wettest month (9.7") and December the driest (4.3").