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Weather & Climate in Ashiya, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ashiya enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 42°F in January while summers reach 78°F in July. The area gets 212 sunny days per year. Annual precipitation totals 68.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 121 feet.
Temperature
42°F Jan (6°C)
78°F Jul (26°C)
| Annual Average | 60.0°F |
| 11% above US avg | |
| January Average | 42°F (6°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 212 days/yr |
Geography
| Elevation | 121 ft (37 m) |
| Area | 4.5 sq mi (11.6 km²) |
| Population Density | 3,166/sq mi |
| Coordinates | 33.8735°N, 130.6539°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
221 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.0.
| Apr 15, 2016 | 6 km ESE of Kumamoto, Japan | M7.0 | 121 km | 10 km |
| Mar 20, 2005 | 28 km NNW of Maebaru-ch??, Japan | M6.6 | 49 km | 10 km |
| Jun 11, 2006 | 15 km S of Tsukawaki, Japan | M6.3 | 94 km | 140 km |
| Mar 13, 2014 | 32 km SSW of Hikari, Japan | M6.3 | 110 km | 79 km |
| Apr 14, 2016 | 2 km SSE of Kumamoto, Japan | M6.2 | 121 km | 9 km |
| Apr 14, 2016 | 5 km ENE of Uto, Japan | M6.0 | 131 km | 8 km |
| Jun 25, 1997 | 17 km E of Hagi, Japan | M5.9 | 105 km | 10 km |
| Apr 15, 2016 | 6 km S of Kikuchi, Japan | M5.7 | 107 km | 10 km |
| Apr 18, 2016 | 8 km NNE of Aso, Japan | M5.5 | 104 km | 10 km |
| Apr 15, 2016 | 10 km NE of Aso, Japan | M5.5 | 107 km | 13 km |
| May 22, 1998 | 9 km NE of Bungo-Takada-shi, Japan | M5.5 | 84 km | 81 km |
| Jul 12, 2015 | 12 km SSW of Usuki, Japan | M5.5 | 139 km | 53 km |
| Apr 19, 2005 | 8 km NNW of Maebaru-ch??, Japan | M5.5 | 51 km | 19 km |
| Apr 14, 2016 | 14 km ESE of Kumamoto, Japan | M5.4 | 127 km | 10 km |
| Apr 15, 2016 | 5 km WSW of Aso, Japan | M5.4 | 111 km | 4 km |
| Apr 15, 2016 | 5 km ENE of Uto, Japan | M5.3 | 130 km | 10 km |
| Apr 14, 2016 | 4 km NNE of Uto, Japan | M5.3 | 129 km | 10 km |
| Apr 15, 2016 | 13 km ESE of Kumamoto, Japan | M5.3 | 124 km | 10 km |
| Apr 19, 2016 | 6 km NNE of Honmachi, Japan | M5.3 | 146 km | 5 km |
| Oct 28, 1991 | 13 km SSW of Ube, Japan | M5.2 | 53 km | 17 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
53 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Shanshan | Category 2 | 98 mph | 156 km |
| 2022 | Nanmadol | Category 2 | 98 mph | 31 km |
| 2022 | Hinnamnor | Category 1 | 81 mph | 199 km |
| 2020 | Haishen | Category 2 | 98 mph | 146 km |
| 2020 | Maysak | Category 2 | 92 mph | 220 km |
| 2019 | Francisco | Category 1 | 81 mph | 108 km |
| 2018 | Trami | Category 1 | 98 mph | 280 km |
| 2018 | Prapiroon | Category 1 | 75 mph | 135 km |
| 2017 | Noru | Category 1 | 69 mph | 259 km |
| 2016 | Malakas | Category 2 | 86 mph | 247 km |
| 2016 | Chaba | Category 1 | 75 mph | 242 km |
| 2015 | Goni | Category 3 | 104 mph | 15 km |
| 2014 | Halong | Category 1 | 81 mph | 264 km |
| 2013 | Danas | Category 1 | 75 mph | 200 km |
| 2012 | Sanba | Category 3 | 98 mph | 237 km |
| 2011 | Ma-on | Category 1 | 86 mph | 270 km |
| 2007 | Usagi | Category 3 | 98 mph | 63 km |
| 2007 | Man-yi | Category 2 | 86 mph | 224 km |
| 2006 | Shanshan | Category 2 | 98 mph | 27 km |
| 2005 | Nabi | Category 2 | 92 mph | 38 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 55.0 m (180 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1792 | SHIMABARA BAY, KYUSHU ISLAND | Landslide | 55.0 m | 15,000 | 129 km |
| 1026 | OFF MASUDA, SHIMANE PREFECTURE | Earthquake | 10.0 m | 1,001 | 147 km |
| 1596 | BEPPU BAY, KYUSHU | Eruption + Earthquake | 8.0 m | 708 | 116 km |
| 1715 | SEIKAIDO | Earthquake | — | — | 116 km |
| 1698 | SEIKAIDO-NANKAIDO | Earthquake | — | — | 116 km |
| 1597 | BEPPU BAY, JAPAN | Eruption + Earthquake | — | 40 | 108 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Yufu-Tsurumi (95 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Yufu-Tsurumi | Lava dome(s) | 1,584 m (5,197 ft) | 867 | 95 km |
| Kujusan | Stratovolcano(es) | 1,791 m (5,876 ft) | 1996 | 104 km |
| Abu | Shield(s) | 641 m (2,103 ft) | -6850 | 112 km |
| Asosan | Caldera | 1,592 m (5,223 ft) | 2020 | 118 km |
| Unzendake | Complex | 1,483 m (4,865 ft) | 1996 | 128 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 3.2 in | Coldest |
| February | 43°F (6°C) | 3.5 in | |
| March | 48°F (9°C) | 4.3 in | |
| April | 57°F (14°C) | 6.0 in | |
| May | 64°F (18°C) | 5.9 in | |
| June | 71°F (22°C) | 10.1 in | |
| July | 78°F (26°C) | 12.1 in | Wettest |
| August | 80°F (27°C) | 5.6 in | Warmest |
| September | 73°F (23°C) | 8.1 in | |
| October | 64°F (18°C) | 3.7 in | |
| November | 55°F (13°C) | 3.2 in | |
| December | 46°F (8°C) | 2.6 in | Driest |
Ashiya has a seasonal temperature swing of 38°F / from 42°F in January to 80°F in August. Total annual precipitation is 68.2 inches, with July being the wettest month (12.1") and December the driest (2.6").