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Weather & Climate in Nanjō, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Nanjō 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 185 sunny days per year. Annual precipitation totals 83.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 302 feet.
Temperature
62°F Jan (17°C)
84°F Jul (29°C)
| Annual Average | 73.1°F |
| 35% above US avg | |
| January Average | 62°F (17°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 185 days/yr |
Geography
| Elevation | 302 ft (92 m) |
| Area | 19.3 sq mi (49.9 km²) |
| Population Density | 2,284/sq mi |
| Coordinates | 26.1445°N, 127.7670°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
878 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 | 70 km | 25 km |
| Mar 2, 2014 | 109 km NW of Nago, Japan | M6.5 | 149 km | 119 km |
| Jul 22, 2004 | 91 km E of Nago, Japan | M6.1 | 119 km | 21 km |
| Apr 14, 1991 | 82 km NW of Nago, Japan | M6.0 | 118 km | 83 km |
| May 1, 2023 | 69 km ESE of Katsuren-haebaru, Japan | M5.9 | 72 km | 9 km |
| May 17, 1990 | 13 km W of Nago, Japan | M5.8 | 53 km | 33 km |
| Jul 6, 2009 | 143 km SSE of Itoman, Japan | M5.7 | 144 km | 7 km |
| Feb 8, 2022 | Ryukyu Islands, Japan | M5.6 | 146 km | 10 km |
| Jun 13, 2013 | 90 km E of Nago, Japan | M5.6 | 120 km | 20 km |
| Apr 9, 1997 | 69 km ESE of Katsuren-haebaru, Japan | M5.5 | 75 km | 33 km |
| May 7, 2022 | 137 km WNW of Naha, Japan | M5.5 | 148 km | 10 km |
| Apr 11, 1997 | 66 km ESE of Katsuren-haebaru, Japan | M5.5 | 73 km | 33 km |
| Jun 15, 1993 | 130 km S of Itoman, Japan | M5.5 | 132 km | 36 km |
| Jul 24, 2004 | 77 km E of Nago, Japan | M5.5 | 106 km | 31 km |
| Jun 19, 2022 | 126 km WNW of Naha, Japan | M5.5 | 138 km | 7 km |
| May 1, 1993 | 46 km WNW of Naha, Japan | M5.5 | 58 km | 55 km |
| May 5, 2011 | 57 km ESE of Katsuren-haebaru, Japan | M5.5 | 63 km | 10 km |
| Feb 27, 2012 | 85 km SW of Itoman, Japan | M5.4 | 94 km | 42 km |
| May 6, 2022 | 135 km WNW of Naha, Japan | M5.4 | 147 km | 10 km |
| Nov 6, 2013 | 95 km E of Nago, Japan | M5.4 | 129 km | 32 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
101 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2023 | Khanun | Category 4 | 109 mph | 81 km |
| 2022 | Hinnamnor | Category 4 | 115 mph | 132 km |
| 2021 | In-fa | Category 2 | 98 mph | 217 km |
| 2020 | Maysak | Category 4 | 109 mph | 120 km |
| 2020 | Bavi | Category 2 | 86 mph | 202 km |
| 2019 | Lingling | Category 4 | 109 mph | 256 km |
| 2019 | Neoguri | Category 2 | 81 mph | 215 km |
| 2019 | Tapah | Category 1 | 75 mph | 256 km |
| 2018 | Maria | Category 3 | 109 mph | 244 km |
| 2018 | Trami | Category 2 | 98 mph | 46 km |
| 2018 | Prapiroon | Category 1 | 75 mph | 97 km |
| 2018 | Kong-rey | Category 1 | 75 mph | 143 km |
| 2017 | Talim | Category 3 | 104 mph | 241 km |
| 2017 | Saola | Category 1 | 69 mph | 124 km |
| 2016 | Chaba | Category 5 | 132 mph | 113 km |
| 2016 | Namtheun | Category 3 | 81 mph | 244 km |
| 2015 | Chan-hom | Category 4 | 104 mph | 165 km |
| 2015 | Goni | Category 4 | 115 mph | 143 km |
| 2015 | Noul | Category 1 | 75 mph | 225 km |
| 2015 | Halola | Category 1 | 75 mph | 223 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 | - | 70 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Io-Torishima (198 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Io-Torishima | Complex | 212 m (696 ft) | 1968 | 198 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 62°F (17°C) | 4.9 in | |
| February | 62°F (17°C) | 5.0 in | Coldest |
| March | 66°F (19°C) | 6.8 in | |
| April | 70°F (21°C) | 7.3 in | |
| May | 75°F (24°C) | 9.5 in | |
| June | 80°F (27°C) | 9.0 in | |
| July | 84°F (29°C) | 6.8 in | Warmest |
| August | 83°F (28°C) | 9.7 in | Wettest |
| September | 81°F (27°C) | 7.9 in | |
| October | 77°F (25°C) | 6.8 in | |
| November | 72°F (22°C) | 5.2 in | |
| December | 66°F (19°C) | 4.3 in | Driest |
Nanjō has a seasonal temperature swing of 21°F / from 62°F in February to 84°F in July. Total annual precipitation is 83.1 inches, with August being the wettest month (9.7") and December the driest (4.3").