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Weather & Climate in Ikegawa, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ikegawa enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 38°F in January while summers reach 76°F in July. The area gets 188 sunny days per year. Annual precipitation totals 82.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 2,251 feet.
Temperature
38°F Jan (3°C)
76°F Jul (24°C)
| Annual Average | 57.6°F |
| 7% above US avg | |
| January Average | 38°F (3°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 188 days/yr |
Geography
| Elevation | 2,251 ft (686 m) |
| Area | 165.8 sq mi (429.3 km²) |
| Population Density | 29/sq mi |
| Coordinates | 33.6000°N, 133.1833°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
155 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 | 81 km | 50 km |
| Jan 21, 2022 | 27 km SSE of Saiki, Japan | M6.3 | 144 km | 39 km |
| Apr 17, 2024 | 18 km W of Uwajima, Japan | M6.3 | 85 km | 32 km |
| Mar 13, 2014 | 32 km SSW of Hikari, Japan | M6.3 | 126 km | 79 km |
| Apr 25, 2001 | 18 km SE of Saiki, Japan | M5.7 | 138 km | 33 km |
| Jul 12, 2015 | 12 km SSW of Usuki, Japan | M5.5 | 148 km | 53 km |
| Mar 27, 2006 | 45 km SSE of Saiki, Japan | M5.5 | 147 km | 35 km |
| Mar 2, 2017 | 39 km SSE of Saiki, Japan | M5.3 | 147 km | 44 km |
| Mar 25, 2001 | 22 km WNW of H?j?, Japan | M5.2 | 75 km | 43 km |
| Jul 17, 2021 | 29 km NE of Kitsuki, Japan | M5.2 | 126 km | 64 km |
| Apr 2, 1997 | 34 km WSW of ?zu, Japan | M5.1 | 93 km | 46 km |
| Apr 26, 2007 | 15 km ESE of Niihama, Japan | M5.1 | 42 km | 50 km |
| Jan 3, 1991 | 22 km W of ?zu, Japan | M5.0 | 82 km | 63 km |
| Feb 18, 2018 | 27 km SE of Saiki, Japan | M5.0 | 132 km | 42 km |
| Jun 20, 2017 | 15 km SE of Saiki, Japan | M5.0 | 134 km | 37 km |
| Aug 14, 1993 | 19 km SW of ?zu, Japan | M5.0 | 77 km | 41 km |
| Jan 21, 2022 | 29 km SSE of Saiki, Japan | M4.9 | 146 km | 45 km |
| Aug 15, 2016 | 26 km ENE of Kitsuki, Japan | M4.9 | 120 km | 72 km |
| Feb 26, 2024 | 18 km N of Yawatahama, Japan | M4.9 | 72 km | 42 km |
| Jan 9, 2001 | 40 km W of ?zu, Japan | M4.9 | 98 km | 49 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
54 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Shanshan | Category 2 | 98 mph | 295 km |
| 2023 | Lan | Category 1 | 69 mph | 233 km |
| 2022 | Nanmadol | Category 2 | 98 mph | 239 km |
| 2019 | Francisco | Category 1 | 81 mph | 229 km |
| 2018 | Jebi | Category 3 | 98 mph | 109 km |
| 2018 | Trami | Category 1 | 98 mph | 121 km |
| 2018 | Cimaron | Category 1 | 92 mph | 132 km |
| 2017 | Noru | Category 1 | 69 mph | 80 km |
| 2016 | Malakas | Category 2 | 86 mph | 94 km |
| 2015 | Goni | Category 3 | 104 mph | 250 km |
| 2015 | Nangka | Category 1 | 86 mph | 123 km |
| 2014 | Phanfone | Category 2 | 92 mph | 187 km |
| 2014 | Halong | Category 1 | 86 mph | 68 km |
| 2012 | Jelawat | Category 1 | 92 mph | 195 km |
| 2011 | Roke | Category 4 | 98 mph | 238 km |
| 2011 | Ma-on | Category 1 | 86 mph | 82 km |
| 2009 | Melor | Category 1 | 92 mph | 246 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 149 km |
| 2007 | Usagi | Category 3 | 98 mph | 170 km |
| 2007 | Man-yi | Category 2 | 86 mph | 106 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 8.0 m (26 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1596 | BEPPU BAY, KYUSHU | Eruption + Earthquake | 8.0 m | 708 | 142 km |
| 684 | NANKAIDO | Earthquake | 3.0 m | — | 144 km |
| 1711 | SEIONAIKAI, JAPAN | Earthquake | 2.0 m | 1,000 | 108 km |
| 1899 | SEIKAIDO | Earthquake | — | — | 130 km |
| 1715 | SEIKAIDO | Earthquake | — | — | 142 km |
| 1698 | SEIKAIDO-NANKAIDO | Earthquake | — | — | 142 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Yufu-Tsurumi (170 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Yufu-Tsurumi | Lava dome(s) | 1,584 m (5,197 ft) | 867 | 170 km |
| Abu | Shield(s) | 641 m (2,103 ft) | -6850 | 177 km |
| Sanbesan | Stratovolcano | 1,126 m (3,694 ft) | 650 | 179 km |
| Kujusan | Stratovolcano(es) | 1,791 m (5,876 ft) | 1996 | 189 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 2.1 in | Coldest, Driest |
| February | 40°F (4°C) | 3.5 in | |
| March | 46°F (8°C) | 5.5 in | |
| April | 56°F (13°C) | 8.5 in | |
| May | 63°F (17°C) | 9.3 in | |
| June | 69°F (21°C) | 13.0 in | Wettest |
| July | 76°F (24°C) | 12.4 in | |
| August | 77°F (25°C) | 4.8 in | Warmest |
| September | 72°F (22°C) | 10.8 in | |
| October | 62°F (16°C) | 6.4 in | |
| November | 52°F (11°C) | 3.7 in | |
| December | 42°F (6°C) | 2.3 in |
Ikegawa has a seasonal temperature swing of 39°F / from 38°F in January to 77°F in August. Total annual precipitation is 82.0 inches, with June being the wettest month (13.0") and January the driest (2.1").