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Weather & Climate in Iijima, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Iijima experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 32°F in January while summers reach 74°F in July. The area gets 175 sunny days per year. Annual precipitation totals 89.0 inches (wetter than the 38-inch national average). The area receives 13.7 inches of snow annually. The city sits at an elevation of 167 feet.
Temperature
32°F Jan (0°C)
74°F Jul (23°C)
| Annual Average | 53.3°F |
| 1% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 175 days/yr |
Geography
| Elevation | 167 ft (51 m) |
| Area | 41.1 sq mi (106.4 km²) |
| Population Density | 461/sq mi |
| Coordinates | 36.0901°N, 136.3599°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
435 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.7.
| Mar 25, 2007 | 46 km NW of Nanao, Japan | M6.7 | 140 km | 8 km |
| Jan 1, 2024 | 8 km SW of Anamizu, Japan | M6.2 | 129 km | 10 km |
| Apr 11, 1990 | 11 km ENE of Maizuru, Japan | M6.1 | 107 km | 362 km |
| Jun 6, 2000 | Sea of Japan | M5.9 | 115 km | 10 km |
| Aug 7, 1992 | 21 km N of Miyazu, Japan | M5.8 | 116 km | 358 km |
| Jan 1, 2024 | 7 km N of Anamizu, Japan | M5.6 | 143 km | 10 km |
| Apr 21, 2000 | 27 km NNE of Maizuru, Japan | M5.5 | 92 km | 347 km |
| Aug 15, 1998 | 22 km WSW of Hotaka, Japan | M5.5 | 117 km | 10 km |
| Aug 26, 2010 | 25 km ENE of Katsuyama, Japan | M5.4 | 37 km | 278 km |
| Sep 24, 2003 | 5 km WNW of Ayabe, Japan | M5.4 | 136 km | 372 km |
| May 17, 1990 | 7 km W of Nanao, Japan | M5.4 | 117 km | 267 km |
| Jan 2, 2024 | 11 km W of Anamizu, Japan | M5.4 | 134 km | 6 km |
| Mar 12, 2020 | 26 km NNW of Nanao, Japan | M5.3 | 140 km | 10 km |
| Oct 5, 2011 | 24 km W of ?machi, Japan | M5.3 | 119 km | 10 km |
| Jan 3, 2024 | 12 km N of Anamizu, Japan | M5.3 | 148 km | 10 km |
| Apr 22, 1998 | 18 km SE of Hikone, Japan | M5.2 | 104 km | 33 km |
| Mar 25, 2007 | 34 km NW of Nanao, Japan | M5.2 | 134 km | 14 km |
| Jun 24, 2017 | 31 km ENE of Gero, Japan | M5.2 | 112 km | 10 km |
| Oct 5, 2011 | eastern Honshu, Japan | M5.2 | 102 km | 13 km |
| Jan 30, 1996 | 67 km NNE of Miyazu, Japan | M5.2 | 91 km | 361 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
39 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2023 | Lan | Category 1 | 69 mph | 273 km |
| 2019 | Hagibis | Category 2 | 92 mph | 269 km |
| 2018 | Jebi | Category 2 | 98 mph | 95 km |
| 2018 | Trami | Category 1 | 92 mph | 266 km |
| 2018 | Cimaron | Category 1 | 86 mph | 224 km |
| 2018 | Jongdari | Category 1 | 81 mph | 189 km |
| 2017 | Noru | Category 1 | 69 mph | 259 km |
| 2014 | Phanfone | Category 1 | 81 mph | 206 km |
| 2011 | Roke | Category 2 | 92 mph | 186 km |
| 2009 | Melor | Category 1 | 86 mph | 233 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 292 km |
| 2007 | Fitow | Category 1 | 81 mph | 262 km |
| 2005 | Mawar | Category 2 | 81 mph | 277 km |
| 2004 | Ma-on | Category 3 | 92 mph | 256 km |
| 2004 | Songda | Category 1 | 81 mph | 238 km |
| 2004 | Chaba | Category 1 | 69 mph | 138 km |
| 2003 | Etau | Category 2 | 69 mph | 56 km |
| 2001 | Danas | Category 1 | 81 mph | 285 km |
| 1999 | Bart | Category 1 | 81 mph | 247 km |
| 1998 | Vicki | Category 2 | 86 mph | 123 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
9 tsunamis recorded within 500 km. Highest wave on record: 11.3 m (37 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1927 | SW. HONSHU ISLAND | Eruption + Earthquake | 11.3 m | 3,022 | 126 km |
| 1909 | ANEGAWA, JAPAN | Earthquake | 1.8 m | 41 | 77 km |
| 2007 | HONSHU: W COAST | Earthquake | 0.1 m | 1 | 140 km |
| 1892 | SW. HONSHU ISLAND | Earthquake | — | 1 | 109 km |
| 1799 | SW. HONSHU ISLAND | Earthquake | — | — | 61 km |
| 1726 | KATSUYAMA | Earthquake | — | — | 40 km |
| 1666 | AICHI PREFECTURE | Earthquake | — | — | 128 km |
| 1586 | ISE BAY | Earthquake | — | 8,000 | 128 km |
| 701 | SEA OF JAPAN | Earthquake | — | — | 97 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
10 volcanoes within 200 km. Closest: Hakusan (38 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Hakusan | Stratovolcano | 2,702 m (8,865 ft) | 1659 | 38 km |
| Ontakesan | Complex | 3,067 m (10,062 ft) | 2014 | 103 km |
| Norikuradake | Stratovolcano(es) | 3,026 m (9,928 ft) | -50 | 107 km |
| Yakedake | Stratovolcano(es) | 2,455 m (8,054 ft) | 1995 | 111 km |
| Washiba-Kumonotaira | Shield(s) | 2,924 m (9,593 ft) | Unknown | 116 km |
| Midagahara | Stratovolcano | 2,621 m (8,599 ft) | 1839 | 123 km |
| Niigata-Yakeyama | Lava dome | 2,400 m (7,874 ft) | 1998 | 176 km |
| Yokodake | Stratovolcano(es) | 2,480 m (8,136 ft) | 1200 | 176 km |
| Myokosan | Stratovolcano | 2,454 m (8,051 ft) | -750 | 180 km |
| Asamayama | Complex | 2,568 m (8,425 ft) | 2019 | 197 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 7.9 in | |
| February | 32°F (0°C) | 5.8 in | Coldest, Driest |
| March | 38°F (4°C) | 5.9 in | |
| April | 50°F (10°C) | 6.4 in | |
| May | 59°F (15°C) | 6.5 in | |
| June | 66°F (19°C) | 9.1 in | |
| July | 74°F (23°C) | 10.0 in | Wettest |
| August | 76°F (24°C) | 7.1 in | Warmest |
| September | 68°F (20°C) | 10.0 in | |
| October | 58°F (14°C) | 6.3 in | |
| November | 48°F (9°C) | 6.3 in | |
| December | 38°F (3°C) | 7.7 in |
Iijima has a seasonal temperature swing of 44°F / from 32°F in February to 76°F in August. Total annual precipitation is 89.0 inches, with July being the wettest month (10.0") and February the driest (5.8").