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Weather & Climate in Kiso, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kiso experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 25°F in January while summers reach 67°F in July. The area gets 218 sunny days per year. Annual precipitation totals 65.1 inches (wetter than the 38-inch national average). The area receives 10.3 inches of snow annually. The city sits at an elevation of 2,477 feet.
Temperature
25°F Jan (-4°C)
67°F Jul (20°C)
| Annual Average | 46.5°F |
| 14% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 67°F (20°C) |
| Sunny Days | 218 days/yr |
Geography
| Elevation | 2,477 ft (755 m) |
| Area | 210.9 sq mi (546.2 km²) |
| Population Density | 50/sq mi |
| Coordinates | 35.8404°N, 137.6903°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
441 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.2.
| Aug 10, 2009 | 8 km NE of Sagara, Japan | M6.2 | 133 km | 40 km |
| Mar 11, 2011 | 13 km E of Arai, Japan | M6.2 | 144 km | 9 km |
| Mar 15, 2011 | 6 km NNW of Fujinomiya, Japan | M6.0 | 103 km | 9 km |
| Jan 15, 2007 | 15 km WSW of Heda, Japan | M5.9 | 136 km | 170 km |
| Mar 11, 2011 | eastern Honshu, Japan | M5.7 | 134 km | 12 km |
| Mar 16, 1997 | 5 km NE of Toyokawa, Japan | M5.6 | 112 km | 36 km |
| Mar 6, 1996 | 13 km NNE of Gotenba, Japan | M5.6 | 126 km | 33 km |
| Mar 15, 2012 | 3 km ENE of ?me, Japan | M5.5 | 143 km | 104 km |
| Aug 15, 1998 | 22 km WSW of Hotaka, Japan | M5.5 | 48 km | 10 km |
| Apr 11, 2011 | 8 km WSW of Iiyama, Japan | M5.5 | 120 km | 17 km |
| Apr 3, 2001 | 10 km NE of Mori, Japan | M5.4 | 109 km | 33 km |
| Aug 26, 2010 | 25 km ENE of Katsuyama, Japan | M5.4 | 88 km | 278 km |
| Jun 5, 1990 | 13 km NE of Gotenba, Japan | M5.3 | 131 km | 122 km |
| Oct 5, 2011 | 24 km W of ?machi, Japan | M5.3 | 71 km | 10 km |
| Jun 24, 2017 | 31 km ENE of Gero, Japan | M5.2 | 11 km | 10 km |
| Oct 5, 1996 | 12 km NW of Kanaya, Japan | M5.2 | 108 km | 48 km |
| May 19, 2020 | 18 km WSW of Hotaka, Japan | M5.2 | 49 km | 10 km |
| Apr 23, 2020 | 18 km WNW of Shiojiri, Japan | M5.2 | 37 km | 10 km |
| Apr 22, 1998 | 18 km SE of Hikone, Japan | M5.2 | 138 km | 33 km |
| Oct 5, 2011 | eastern Honshu, Japan | M5.2 | 77 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
36 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 | 300 km |
| 2019 | Faxai | Category 3 | 98 mph | 191 km |
| 2019 | Hagibis | Category 2 | 92 mph | 157 km |
| 2018 | Jebi | Category 2 | 98 mph | 189 km |
| 2018 | Jongdari | Category 1 | 81 mph | 158 km |
| 2017 | Lan | Category 1 | 98 mph | 275 km |
| 2016 | Mindulle | Category 1 | 75 mph | 238 km |
| 2014 | Phanfone | Category 1 | 81 mph | 123 km |
| 2011 | Roke | Category 2 | 92 mph | 105 km |
| 2009 | Melor | Category 1 | 86 mph | 228 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 270 km |
| 2007 | Fitow | Category 1 | 81 mph | 139 km |
| 2005 | Mawar | Category 2 | 81 mph | 173 km |
| 2004 | Ma-on | Category 3 | 92 mph | 148 km |
| 2004 | Chaba | Category 1 | 69 mph | 222 km |
| 2003 | Etau | Category 2 | 69 mph | 137 km |
| 2002 | Higos | Category 2 | 86 mph | 187 km |
| 2001 | Danas | Category 1 | 81 mph | 174 km |
| 2000 | Kirogi | Category 1 | 86 mph | 279 km |
| 1998 | Vicki | Category 2 | 86 mph | 97 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
10 tsunamis recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1855 | ENSHUNADA | Earthquake | 3.0 m | - | 149 km |
| 1909 | ANEGAWA, JAPAN | Earthquake | 1.8 m | 41 | 135 km |
| 1945 | TOKAIDO | Earthquake | 1.0 m | 2,306 | 134 km |
| 2009 | HONSHU: S COAST | Earthquake | 0.6 m | 1 | 133 km |
| 1857 | TOKAIDO | Earthquake | - | - | 128 km |
| 1799 | SW. HONSHU ISLAND | Earthquake | - | - | 129 km |
| 1666 | AICHI PREFECTURE | Earthquake | - | - | 123 km |
| 1589 | SURUGA, JAPAN | Earthquake | - | - | 125 km |
| 1586 | ISE BAY | Earthquake | - | 8,000 | 123 km |
| 863 | NW. HONSHU ISLAND | Eruption + Earthquake | - | - | 143 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Ontakesan (20 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Ontakesan | Complex | 3,067 m (10,062 ft) | 2014 | 20 km |
| Norikuradake | Stratovolcano(es) | 3,026 m (9,928 ft) | -50 | 32 km |
| Yakedake | Stratovolcano(es) | 2,455 m (8,054 ft) | 1995 | 44 km |
| Yokodake | Stratovolcano(es) | 2,480 m (8,136 ft) | 1200 | 63 km |
| Washiba-Kumonotaira | Shield(s) | 2,924 m (9,593 ft) | Unknown | 64 km |
| Midagahara | Stratovolcano | 2,621 m (8,599 ft) | 1839 | 82 km |
| Hakusan | Stratovolcano | 2,702 m (8,865 ft) | 1659 | 90 km |
| Asamayama | Complex | 2,568 m (8,425 ft) | 2019 | 98 km |
| Fujisan | Stratovolcano | 3,776 m (12,388 ft) | 1708 | 108 km |
| Kusatsu-Shiranesan | Stratovolcano(es) | 2,165 m (7,103 ft) | 2018 | 115 km |
| Shiga | Shield(s) | 2,041 m (6,696 ft) | Unknown | 120 km |
| Myokosan | Stratovolcano | 2,454 m (8,051 ft) | -750 | 123 km |
| Niigata-Yakeyama | Lava dome | 2,400 m (7,874 ft) | 1998 | 124 km |
| Harunasan | Stratovolcano | 1,449 m (4,754 ft) | 550 | 126 km |
| Hakoneyama | Complex | 1,438 m (4,718 ft) | 2015 | 138 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 2.0 in | Coldest |
| February | 26°F (-4°C) | 2.5 in | |
| March | 32°F (0°C) | 4.1 in | |
| April | 44°F (7°C) | 5.5 in | |
| May | 53°F (12°C) | 5.8 in | |
| June | 60°F (16°C) | 8.8 in | |
| July | 67°F (20°C) | 8.8 in | |
| August | 69°F (21°C) | 8.2 in | Warmest |
| September | 61°F (16°C) | 9.5 in | Wettest |
| October | 50°F (10°C) | 5.2 in | |
| November | 40°F (5°C) | 3.0 in | |
| December | 30°F (-1°C) | 1.8 in | Driest |
Kiso has a seasonal temperature swing of 45°F / from 25°F in January to 69°F in August. Total annual precipitation is 65.1 inches, with September being the wettest month (9.5") and December the driest (1.8").