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Weather & Climate in Mitsushima, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mitsushima experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 31°F in January while summers reach 70°F in July. The area gets 198 sunny days per year. Annual precipitation totals 75.9 inches (wetter than the 38-inch national average). The area receives 5.1 inches of snow annually. The city sits at an elevation of 1,739 feet.
Temperature
31°F Jan (-0°C)
70°F Jul (21°C)
| Annual Average | 51.4°F |
| 5% below US avg | |
| January Average | 31°F (-0°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 198 days/yr |
Geography
| Elevation | 1,739 ft (530 m) |
| Area | 70.1 sq mi (181.6 km²) |
| Population Density | 17/sq mi |
| Coordinates | 35.2667°N, 137.8500°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
599 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.4.
| Feb 20, 1990 | 28 km E of Shimoda, Japan | M6.4 | 142 km | 14 km |
| Aug 10, 2009 | 8 km NE of Sagara, Japan | M6.2 | 69 km | 40 km |
| May 4, 2014 | 31 km ESE of It?, Japan | M6.0 | 148 km | 153 km |
| Mar 15, 2011 | 6 km NNW of Fujinomiya, Japan | M6.0 | 67 km | 9 km |
| Jan 15, 2007 | 15 km WSW of Heda, Japan | M5.9 | 83 km | 170 km |
| Aug 1, 2011 | 20 km E of ?yama, Japan | M5.9 | 88 km | 13 km |
| May 23, 1997 | 38 km SSE of Tahara, Japan | M5.8 | 105 km | 11 km |
| Apr 20, 2006 | 16 km SE of It?, Japan | M5.6 | 132 km | 23 km |
| Nov 18, 2013 | 25 km SE of Toba, Japan | M5.6 | 127 km | 328 km |
| May 3, 1998 | 14 km SW of It?, Japan | M5.6 | 112 km | 34 km |
| Mar 4, 1997 | 9 km SSW of It?, Japan | M5.6 | 116 km | 10 km |
| Mar 16, 1997 | 5 km NE of Toyokawa, Japan | M5.6 | 59 km | 36 km |
| Mar 6, 1996 | 13 km NNE of Gotenba, Japan | M5.6 | 105 km | 33 km |
| Aug 15, 1998 | 22 km WSW of Hotaka, Japan | M5.5 | 113 km | 10 km |
| Mar 15, 2012 | 3 km ENE of ?me, Japan | M5.5 | 142 km | 104 km |
| Jun 26, 1990 | near the south coast of Honshu, Japan | M5.4 | 113 km | 150 km |
| Apr 3, 2001 | 10 km NE of Mori, Japan | M5.4 | 44 km | 33 km |
| Aug 26, 2010 | 25 km ENE of Katsuyama, Japan | M5.4 | 136 km | 278 km |
| Oct 5, 2011 | 24 km W of ?machi, Japan | M5.3 | 137 km | 10 km |
| May 9, 2022 | 7 km NE of Toba, Japan | M5.3 | 119 km | 329 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
46 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2023 | Lan | Category 1 | 69 mph | 263 km |
| 2019 | Faxai | Category 4 | 98 mph | 146 km |
| 2019 | Hagibis | Category 2 | 92 mph | 107 km |
| 2018 | Jebi | Category 2 | 98 mph | 206 km |
| 2018 | Trami | Category 1 | 92 mph | 270 km |
| 2018 | Cimaron | Category 1 | 86 mph | 297 km |
| 2018 | Jongdari | Category 1 | 81 mph | 109 km |
| 2017 | Lan | Category 1 | 98 mph | 216 km |
| 2017 | Noru | Category 1 | 63 mph | 288 km |
| 2016 | Mindulle | Category 1 | 75 mph | 185 km |
| 2014 | Phanfone | Category 1 | 86 mph | 65 km |
| 2013 | Wipha | Category 1 | 81 mph | 288 km |
| 2011 | Roke | Category 3 | 92 mph | 41 km |
| 2010 | Chaba | Category 1 | 75 mph | 287 km |
| 2009 | Melor | Category 1 | 86 mph | 181 km |
| 2009 | Krovanh | Category 1 | 69 mph | 272 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 215 km |
| 2007 | Fitow | Category 1 | 81 mph | 109 km |
| 2005 | Mawar | Category 2 | 86 mph | 118 km |
| 2004 | Ma-on | Category 4 | 92 mph | 93 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
20 tsunamis recorded within 500 km. Highest wave on record: 21.0 m (69 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1854 | ENSHUNADA SEA | Earthquake | 21.0 m | 1,000 | 141 km |
| 1707 | ENSHUNADA | Earthquake | 11.0 m | 2,000 | 130 km |
| 1498 | ENSHUNADA SEA | Earthquake | 10.0 m | 5,000 | 143 km |
| 1096 | ENSHUNADA | Earthquake | 7.0 m | - | 144 km |
| 1855 | ENSHUNADA | Earthquake | 3.0 m | - | 88 km |
| 1909 | ANEGAWA, JAPAN | Earthquake | 1.8 m | 41 | 141 km |
| 1945 | TOKAIDO | Earthquake | 1.0 m | 2,306 | 87 km |
| 2009 | HONSHU: S COAST | Earthquake | 0.6 m | 1 | 69 km |
| 1980 | HONSHU ISLAND | Earthquake | 0.6 m | - | 132 km |
| 1978 | TOKAIDO | Earthquake | 0.4 m | 25 | 138 km |
| 1974 | TOKAIDO | Earthquake | 0.2 m | 30 | 107 km |
| 1990 | JAPAN | Earthquake | 0.2 m | - | 142 km |
| 1857 | TOKAIDO | Earthquake | - | - | 66 km |
| 1666 | AICHI PREFECTURE | Earthquake | - | - | 100 km |
| 1633 | SAGAMI BAY | Earthquake | - | 150 | 123 km |
| 1589 | SURUGA, JAPAN | Earthquake | - | - | 61 km |
| 1586 | ISE BAY | Earthquake | - | 8,000 | 100 km |
| 1257 | SAGAMI BAY, JAPAN | Earthquake | - | - | 150 km |
| 1241 | KAMAKURA, SAGAMI BAY | Earthquake | - | - | 141 km |
| 818 | TOKAIDO | Eruption + Earthquake | - | - | 132 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Ontakesan (77 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Ontakesan | Complex | 3,067 m (10,062 ft) | 2014 | 77 km |
| Fujisan | Stratovolcano | 3,776 m (12,388 ft) | 1708 | 80 km |
| Norikuradake | Stratovolcano(es) | 3,026 m (9,928 ft) | -50 | 97 km |
| Yokodake | Stratovolcano(es) | 2,480 m (8,136 ft) | 1200 | 101 km |
| Hakoneyama | Complex | 1,438 m (4,718 ft) | 2015 | 106 km |
| Yakedake | Stratovolcano(es) | 2,455 m (8,054 ft) | 1995 | 109 km |
| Izu-Tobu | Pyroclastic cone(s) | 1,406 m (4,613 ft) | 1989 | 121 km |
| Washiba-Kumonotaira | Shield(s) | 2,924 m (9,593 ft) | Unknown | 129 km |
| Hakusan | Stratovolcano | 2,702 m (8,865 ft) | 1659 | 139 km |
| Asamayama | Complex | 2,568 m (8,425 ft) | 2019 | 141 km |
| Midagahara | Stratovolcano | 2,621 m (8,599 ft) | 1839 | 147 km |
| Izu-Oshima | Stratovolcano | 758 m (2,487 ft) | 1990 | 153 km |
| Toshima | Stratovolcano | 508 m (1,667 ft) | -4550 | 155 km |
| Niijima | Lava dome(s) | 432 m (1,417 ft) | 886 | 162 km |
| Harunasan | Stratovolcano | 1,449 m (4,754 ft) | 550 | 162 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-0°C) | 2.2 in | Coldest |
| February | 32°F (0°C) | 3.0 in | |
| March | 39°F (4°C) | 5.2 in | |
| April | 49°F (9°C) | 7.0 in | |
| May | 57°F (14°C) | 7.0 in | |
| June | 64°F (18°C) | 10.1 in | |
| July | 70°F (21°C) | 9.5 in | |
| August | 72°F (22°C) | 9.5 in | Warmest |
| September | 66°F (19°C) | 10.5 in | Wettest |
| October | 55°F (13°C) | 6.3 in | |
| November | 46°F (8°C) | 3.6 in | |
| December | 36°F (2°C) | 2.1 in | Driest |
Mitsushima has a seasonal temperature swing of 41°F / from 31°F in January to 72°F in August. Total annual precipitation is 75.9 inches, with September being the wettest month (10.5") and December the driest (2.1").