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Weather & Climate in Asahi, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Asahi enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 39°F in January while summers reach 78°F in July. The area gets 207 sunny days per year. Annual precipitation totals 71.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 148 feet.
Temperature
39°F Jan (4°C)
78°F Jul (25°C)
| Annual Average | 58.7°F |
| 9% above US avg | |
| January Average | 39°F (4°C) |
| July Average | 78°F (25°C) |
| Sunny Days | 207 days/yr |
Geography
| Elevation | 148 ft (45 m) |
| Area | 2.6 sq mi (6.8 km²) |
| Population Density | 4,206/sq mi |
| Coordinates | 35.0342°N, 136.6644°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
534 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 | 150 km | 40 km |
| Apr 11, 1990 | 11 km ENE of Maizuru, Japan | M6.1 | 121 km | 362 km |
| Jul 7, 1995 | 62 km SSE of Toba, Japan | M6.0 | 126 km | 333 km |
| Jun 1, 1998 | 17 km SW of Owase, Japan | M5.8 | 133 km | 399 km |
| May 23, 1997 | 38 km SSE of Tahara, Japan | M5.8 | 105 km | 11 km |
| Mar 16, 1997 | 5 km NE of Toyokawa, Japan | M5.6 | 74 km | 36 km |
| Nov 18, 2013 | 25 km SE of Toba, Japan | M5.6 | 85 km | 328 km |
| Oct 30, 2000 | western Honshu, Japan | M5.5 | 91 km | 35 km |
| Aug 1, 2007 | 42 km ESE of Owase, Japan | M5.5 | 126 km | 371 km |
| Jun 17, 2018 | near the south coast of western Honshu, Japan | M5.5 | 96 km | 10 km |
| Apr 21, 2000 | 27 km NNE of Maizuru, Japan | M5.5 | 128 km | 347 km |
| Jan 18, 2003 | 67 km SSE of Toba, Japan | M5.5 | 131 km | 33 km |
| Apr 3, 2001 | 10 km NE of Mori, Japan | M5.4 | 125 km | 33 km |
| Sep 24, 2003 | 5 km WNW of Ayabe, Japan | M5.4 | 137 km | 372 km |
| Aug 26, 2010 | 25 km ENE of Katsuyama, Japan | M5.4 | 121 km | 278 km |
| May 9, 2022 | 7 km NE of Toba, Japan | M5.3 | 60 km | 329 km |
| Jan 6, 2004 | 36 km S of Ise, Japan | M5.3 | 98 km | 33 km |
| Apr 22, 1998 | 18 km SE of Hikone, Japan | M5.2 | 26 km | 33 km |
| Jan 15, 2021 | 76 km SSE of Toba, Japan | M5.2 | 139 km | 360 km |
| Jun 24, 2017 | 31 km ENE of Gero, Japan | M5.2 | 123 km | 10 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 2 | 75 mph | 173 km |
| 2019 | Faxai | Category 4 | 98 mph | 238 km |
| 2019 | Hagibis | Category 2 | 92 mph | 192 km |
| 2018 | Jebi | Category 3 | 98 mph | 110 km |
| 2018 | Trami | Category 1 | 92 mph | 174 km |
| 2018 | Cimaron | Category 1 | 86 mph | 186 km |
| 2018 | Jongdari | Category 1 | 81 mph | 72 km |
| 2017 | Lan | Category 1 | 98 mph | 188 km |
| 2017 | Noru | Category 1 | 69 mph | 184 km |
| 2016 | Mindulle | Category 1 | 75 mph | 272 km |
| 2014 | Phanfone | Category 1 | 86 mph | 106 km |
| 2011 | Roke | Category 3 | 98 mph | 97 km |
| 2011 | Ma-on | Category 1 | 86 mph | 248 km |
| 2010 | Chaba | Category 1 | 75 mph | 296 km |
| 2009 | Melor | Category 1 | 86 mph | 115 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 172 km |
| 2007 | Fitow | Category 1 | 81 mph | 204 km |
| 2005 | Mawar | Category 2 | 86 mph | 182 km |
| 2004 | Ma-on | Category 4 | 92 mph | 170 km |
| 2004 | Chaba | Category 1 | 69 mph | 221 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
19 tsunamis recorded within 500 km. Highest wave on record: 11.0 m (36 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1707 | ENSHUNADA | Earthquake | 11.0 m | 2,000 | 147 km |
| 1944 | OFF SOUTHEAST COAST KII PENINSULA | Earthquake | 10.0 m | 1,223 | 122 km |
| 1096 | ENSHUNADA | Earthquake | 7.0 m | — | 138 km |
| 1855 | ENSHUNADA | Earthquake | 3.0 m | — | 104 km |
| 1510 | OSAKA BAY | Earthquake | 2.0 m | — | 125 km |
| 1408 | KUMANONADA | Earthquake | 2.0 m | — | 139 km |
| 1403 | KUMANONADA | Earthquake | 2.0 m | — | 149 km |
| 922 | KUMANONADA | Earthquake | 2.0 m | — | 137 km |
| 1909 | ANEGAWA, JAPAN | Earthquake | 1.8 m | 41 | 52 km |
| 1945 | TOKAIDO | Earthquake | 1.0 m | 2,306 | 61 km |
| 2009 | HONSHU: S COAST | Earthquake | 0.6 m | 1 | 150 km |
| 1791 | OASAKA BAY | Earthquake | — | — | 130 km |
| 1708 | TOKAIDO | Earthquake | — | — | 119 km |
| 1666 | AICHI PREFECTURE | Earthquake | — | — | 13 km |
| 1589 | SURUGA, JAPAN | Earthquake | — | — | 142 km |
| 1586 | ISE BAY | Earthquake | — | 8,000 | 13 km |
| 745 | OSAKA BAY, JAPAN | Earthquake | — | — | 134 km |
| 704 | KUMANONADA | Earthquake | — | — | 137 km |
| 701 | SEA OF JAPAN | Earthquake | — | — | 137 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
8 volcanoes within 200 km. Closest: Ontakesan (121 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Ontakesan | Complex | 3,067 m (10,062 ft) | 2014 | 121 km |
| Hakusan | Stratovolcano | 2,702 m (8,865 ft) | 1659 | 125 km |
| Norikuradake | Stratovolcano(es) | 3,026 m (9,928 ft) | -50 | 144 km |
| Yakedake | Stratovolcano(es) | 2,455 m (8,054 ft) | 1995 | 157 km |
| Washiba-Kumonotaira | Shield(s) | 2,924 m (9,593 ft) | Unknown | 174 km |
| Yokodake | Stratovolcano(es) | 2,480 m (8,136 ft) | 1200 | 190 km |
| Midagahara | Stratovolcano | 2,621 m (8,599 ft) | 1839 | 190 km |
| Fujisan | Stratovolcano | 3,776 m (12,388 ft) | 1708 | 191 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 2.3 in | Coldest |
| February | 40°F (4°C) | 3.1 in | |
| March | 45°F (7°C) | 4.9 in | |
| April | 56°F (13°C) | 6.8 in | |
| May | 64°F (18°C) | 7.0 in | |
| June | 71°F (21°C) | 10.3 in | Wettest |
| July | 78°F (25°C) | 10.2 in | |
| August | 80°F (27°C) | 6.4 in | Warmest |
| September | 73°F (23°C) | 9.3 in | |
| October | 63°F (17°C) | 5.3 in | |
| November | 53°F (12°C) | 3.5 in | |
| December | 44°F (6°C) | 2.1 in | Driest |
Asahi has a seasonal temperature swing of 41°F / from 39°F in January to 80°F in August. Total annual precipitation is 71.1 inches, with June being the wettest month (10.3") and December the driest (2.1").