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Weather & Climate in Innoshima, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Innoshima enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 42°F in January while summers reach 79°F in July. The area gets 238 sunny days per year, above the national average. Annual precipitation totals 53.8 inches (wetter than the 38-inch national average). The city sits at an elevation of 108 feet.
Temperature
42°F Jan (6°C)
79°F Jul (26°C)
| Annual Average | 60.2°F |
| 11% above US avg | |
| January Average | 42°F (6°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 238 days/yr |
Geography
| Elevation | 108 ft (33 m) |
| Area | 15.4 sq mi (39.8 km²) |
| Population Density | 1,703/sq mi |
| Coordinates | 34.2833°N, 133.1833°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
146 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.8.
| Mar 24, 2001 | 16 km SSW of Kure, Japan | M6.8 | 64 km | 50 km |
| Oct 6, 2000 | 8 km ESE of Matsue, Japan | M6.7 | 131 km | 10 km |
| Apr 17, 2024 | 18 km W of Uwajima, Japan | M6.3 | 138 km | 32 km |
| Mar 13, 2014 | 32 km SSW of Hikari, Japan | M6.3 | 142 km | 79 km |
| Jun 25, 1997 | 17 km E of Hagi, Japan | M5.9 | 146 km | 10 km |
| Apr 8, 2018 | 8 km NNE of ?dach?-?da, Japan | M5.7 | 123 km | 10 km |
| Aug 28, 1991 | 9 km SSW of Yasugich?, Japan | M5.5 | 117 km | 13 km |
| Oct 8, 2000 | 32 km N of Sh?bara, Japan | M5.4 | 97 km | 10 km |
| Sep 3, 1997 | 21 km S of Yasugich?, Japan | M5.3 | 105 km | 10 km |
| Sep 16, 2002 | 24 km SW of Kurayoshi, Japan | M5.3 | 116 km | 10 km |
| Oct 8, 2000 | 8 km SSW of Yonago, Japan | M5.2 | 121 km | 10 km |
| Jul 17, 2021 | 29 km NE of Kitsuki, Japan | M5.2 | 146 km | 64 km |
| Mar 25, 2001 | 22 km WNW of H?j?, Japan | M5.2 | 66 km | 43 km |
| Apr 2, 1997 | 34 km WSW of ?zu, Japan | M5.1 | 136 km | 46 km |
| Apr 26, 2007 | 15 km ESE of Niihama, Japan | M5.1 | 49 km | 50 km |
| Aug 14, 1993 | 19 km SW of ?zu, Japan | M5.0 | 125 km | 41 km |
| Jan 3, 1991 | 22 km W of ?zu, Japan | M5.0 | 120 km | 63 km |
| Jun 3, 2011 | 9 km ENE of G?tsuch?, Japan | M5.0 | 114 km | 10 km |
| Jun 18, 2021 | 1 km ENE of ?zu, Japan | M4.9 | 104 km | 42 km |
| Jan 9, 2001 | 40 km W of ?zu, Japan | M4.9 | 126 km | 49 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
50 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 | 241 km |
| 2022 | Nanmadol | Category 1 | 86 mph | 250 km |
| 2019 | Francisco | Category 1 | 81 mph | 284 km |
| 2018 | Jebi | Category 3 | 98 mph | 141 km |
| 2018 | Trami | Category 1 | 92 mph | 165 km |
| 2018 | Cimaron | Category 1 | 92 mph | 144 km |
| 2017 | Noru | Category 1 | 69 mph | 138 km |
| 2016 | Malakas | Category 1 | 86 mph | 168 km |
| 2015 | Goni | Category 3 | 104 mph | 224 km |
| 2015 | Nangka | Category 1 | 81 mph | 176 km |
| 2014 | Phanfone | Category 2 | 92 mph | 250 km |
| 2014 | Halong | Category 1 | 81 mph | 143 km |
| 2012 | Jelawat | Category 1 | 92 mph | 246 km |
| 2011 | Roke | Category 4 | 98 mph | 287 km |
| 2011 | Ma-on | Category 1 | 86 mph | 135 km |
| 2009 | Melor | Category 1 | 92 mph | 285 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 216 km |
| 2007 | Usagi | Category 2 | 92 mph | 165 km |
| 2007 | Man-yi | Category 1 | 81 mph | 180 km |
| 2006 | Shanshan | Category 1 | 81 mph | 258 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 10.0 m (33 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1026 | OFF MASUDA, SHIMANE PREFECTURE | Earthquake | 10.0 m | 1,001 | 139 km |
| 1872 | SW. HONSHU ISLAND | Earthquake | 3.0 m | 804 | 128 km |
| 1711 | SEIONAIKAI, JAPAN | Earthquake | 2.0 m | 1,000 | 75 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Sanbesan (108 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Sanbesan | Stratovolcano | 1,126 m (3,694 ft) | 650 | 108 km |
| Abu | Shield(s) | 641 m (2,103 ft) | -6850 | 147 km |
| Yufu-Tsurumi | Lava dome(s) | 1,584 m (5,197 ft) | 867 | 200 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 1.6 in | |
| February | 42°F (5°C) | 2.2 in | Coldest |
| March | 47°F (8°C) | 3.5 in | |
| April | 56°F (13°C) | 5.4 in | |
| May | 64°F (18°C) | 5.5 in | |
| June | 71°F (22°C) | 9.0 in | Wettest |
| July | 79°F (26°C) | 7.2 in | |
| August | 81°F (27°C) | 3.8 in | Warmest |
| September | 74°F (24°C) | 7.3 in | |
| October | 65°F (18°C) | 4.3 in | |
| November | 55°F (13°C) | 2.6 in | |
| December | 47°F (8°C) | 1.3 in | Driest |
Innoshima has a seasonal temperature swing of 39°F / from 42°F in February to 81°F in August. Total annual precipitation is 53.8 inches, with June being the wettest month (9.0") and December the driest (1.3").