All Countries
Weather & Climate in Itoman, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Itoman 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 16 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 | 16 ft (5 m) |
| Area | 18.0 sq mi (46.6 km²) |
| Population Density | 3,389/sq mi |
| Coordinates | 26.1265°N, 127.6692°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
936 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 | 79 km | 25 km |
| Mar 2, 2014 | 109 km NW of Nago, Japan | M6.5 | 148 km | 119 km |
| Jul 22, 2004 | 91 km E of Nago, Japan | M6.1 | 129 km | 21 km |
| Apr 14, 1991 | 82 km NW of Nago, Japan | M6.0 | 117 km | 83 km |
| May 1, 2023 | 69 km ESE of Katsuren-haebaru, Japan | M5.9 | 81 km | 9 km |
| May 17, 1990 | 13 km W of Nago, Japan | M5.8 | 58 km | 33 km |
| Mar 17, 2022 | 146 km WNW of Naha, Japan | M5.7 | 150 km | 9 km |
| Jul 6, 2009 | 143 km SSE of Itoman, Japan | M5.7 | 144 km | 7 km |
| Feb 8, 2022 | Ryukyu Islands, Japan | M5.6 | 139 km | 10 km |
| Jun 3, 2022 | 140 km WNW of Naha, Japan | M5.6 | 144 km | 10 km |
| Feb 21, 2022 | 143 km WNW of Naha, Japan | M5.6 | 147 km | 11 km |
| Apr 13, 2022 | 145 km WNW of Naha, Japan | M5.6 | 149 km | 8 km |
| Jun 13, 2013 | 90 km E of Nago, Japan | M5.6 | 129 km | 20 km |
| May 7, 2022 | 137 km WNW of Naha, Japan | M5.5 | 141 km | 10 km |
| May 5, 2011 | 57 km ESE of Katsuren-haebaru, Japan | M5.5 | 73 km | 10 km |
| Jun 19, 2022 | 126 km WNW of Naha, Japan | M5.5 | 130 km | 7 km |
| Apr 9, 1997 | 69 km ESE of Katsuren-haebaru, Japan | M5.5 | 85 km | 33 km |
| Jul 24, 2004 | 77 km E of Nago, Japan | M5.5 | 115 km | 31 km |
| Jun 15, 1993 | 130 km S of Itoman, Japan | M5.5 | 131 km | 36 km |
| May 1, 1993 | 46 km WNW of Naha, Japan | M5.5 | 51 km | 55 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
99 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 | 74 km |
| 2022 | Hinnamnor | Category 4 | 115 mph | 136 km |
| 2021 | In-fa | Category 2 | 98 mph | 214 km |
| 2020 | Maysak | Category 4 | 109 mph | 112 km |
| 2020 | Bavi | Category 2 | 86 mph | 196 km |
| 2019 | Lingling | Category 4 | 109 mph | 247 km |
| 2019 | Neoguri | Category 2 | 81 mph | 222 km |
| 2019 | Tapah | Category 1 | 75 mph | 250 km |
| 2018 | Maria | Category 3 | 109 mph | 236 km |
| 2018 | Trami | Category 2 | 98 mph | 41 km |
| 2018 | Prapiroon | Category 1 | 75 mph | 87 km |
| 2018 | Kong-rey | Category 1 | 75 mph | 134 km |
| 2017 | Talim | Category 4 | 104 mph | 232 km |
| 2017 | Saola | Category 1 | 69 mph | 130 km |
| 2016 | Chaba | Category 5 | 132 mph | 104 km |
| 2016 | Namtheun | Category 2 | 81 mph | 251 km |
| 2015 | Goni | Category 4 | 115 mph | 137 km |
| 2015 | Chan-hom | Category 4 | 104 mph | 157 km |
| 2015 | Halola | Category 1 | 75 mph | 233 km |
| 2015 | Noul | Category 1 | 75 mph | 215 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 | - | 19 km |
| 2010 | RYUKYU ISLANDS | Earthquake | 0.1 m | - | 79 km |
Source: NOAA/NCEI Historical Tsunami Database.
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 |
Itoman 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").