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Weather & Climate in Ashoro, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ashoro has a cool climate with an average annual temperature of 42°F (5°C). Winters average 14°F in January while summers reach 65°F in July. The area gets 257 sunny days per year, above the national average. Annual precipitation totals 43.4 inches. The area receives 13.0 inches of snow annually. The city sits at an elevation of 384 feet.
Temperature
14°F Jan (-10°C)
65°F Jul (18°C)
| Annual Average | 41.6°F |
| 23% below US avg | |
| January Average | 14°F (-10°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 257 days/yr |
Geography
| Elevation | 384 ft (117 m) |
| Area | 685.8 sq mi (1,776.2 km²) |
| Population Density | 10/sq mi |
| Coordinates | 43.2372°N, 143.5428°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
930 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.6.
| Jan 15, 1993 | 52 km NE of Otofuke, Japan | M7.6 | 14 km | 102 km |
| Feb 2, 2013 | 18 km SSW of Obihiro, Japan | M6.9 | 64 km | 107 km |
| Oct 8, 2003 | 39 km SSE of Kushiro, Japan | M6.7 | 106 km | 32 km |
| Sep 29, 2003 | 58 km S of Kushiro, Japan | M6.5 | 111 km | 25 km |
| Jan 18, 2005 | 40 km E of Kushiro, Japan | M6.3 | 112 km | 42 km |
| May 12, 1999 | 44 km W of Kushiro, Japan | M6.2 | 33 km | 103 km |
| Apr 11, 2004 | 38 km E of Kushiro, Japan | M6.1 | 111 km | 42 km |
| Oct 21, 2011 | 16 km NE of Asahikawa, Japan | M6.1 | 113 km | 187 km |
| Nov 15, 1997 | 19 km NNW of Shibetsu, Japan | M6.1 | 135 km | 161 km |
| Jan 15, 1993 | 17 km W of Kushiro, Japan | M6.1 | 58 km | 112 km |
| Nov 13, 2000 | 62 km SSE of Kushiro, Japan | M6.0 | 130 km | 33 km |
| Feb 25, 2023 | Hokkaido, Japan region | M6.0 | 129 km | 55 km |
| May 31, 2025 | 78 km S of Kushiro, Japan | M6.0 | 132 km | 21 km |
| Oct 8, 2003 | 87 km SSE of Kushiro, Japan | M5.9 | 148 km | 33 km |
| Jul 2, 2003 | Hokkaido, Japan region | M5.9 | 147 km | 24 km |
| Aug 25, 2012 | 45 km ENE of Shizunai-furukawach?, Japan | M5.9 | 105 km | 55 km |
| Oct 8, 2003 | 88 km SSE of Kushiro, Japan | M5.8 | 148 km | 33 km |
| Jul 1, 2007 | 32 km W of Shibetsu, Japan | M5.8 | 107 km | 130 km |
| Jun 12, 1991 | 17 km SE of Obihiro, Japan | M5.8 | 53 km | 109 km |
| Jun 10, 2004 | 49 km E of Shizunai-furukawach?, Japan | M5.8 | 105 km | 50 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2000 | Sonamu | Category 1 | 58 mph | 277 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
5 tsunamis recorded within 500 km. Highest wave on record: 6.5 m (21 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1952 | SE. HOKKAIDO ISLAND | Earthquake | 6.5 m | 33 | 124 km |
| 1938 | E. HOKKAIDO ISLAND | Earthquake | 0.9 m | 1 | 73 km |
| 1956 | NE. HOKKAIDO ISLAND | Earthquake | 0.4 m | - | 126 km |
| 2004 | HOKKAIDO ISLAND | Earthquake | 0.1 m | - | 131 km |
| 1962 | SE. HOKKAIDO ISLAND | Earthquake | 0.1 m | - | 119 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
10 volcanoes within 200 km. Closest: Akan (41 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Akan | Caldera | 1,499 m (4,918 ft) | 2008 | 41 km |
| Maruyama | Stratovolcano(es) | 2,013 m (6,604 ft) | 1898 | 46 km |
| Tokachidake | Stratovolcano(es) | 2,077 m (6,814 ft) | 2004 | 72 km |
| Taisetsuzan | Stratovolcano(es) | 2,291 m (7,516 ft) | 1739 | 73 km |
| Kussharo | Caldera | 574 m (1,883 ft) | 1320 | 83 km |
| Mashu | Caldera | 857 m (2,812 ft) | 1080 | 90 km |
| Shiretoko-Iozan | Stratovolcano | 1,562 m (5,125 ft) | 1936 | 164 km |
| Tomariyama [Golovnin] | Caldera | 535 m (1,755 ft) | 1848 | 172 km |
| Shikotsu | Caldera | 1,320 m (4,331 ft) | 1979 | 186 km |
| Raususan [Mendeleev] | Stratovolcano | 882 m (2,894 ft) | 1880 | 195 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 14°F (-10°C) | 2.4 in | Coldest |
| February | 16°F (-9°C) | 1.9 in | Driest |
| March | 26°F (-3°C) | 3.0 in | |
| April | 40°F (5°C) | 2.9 in | |
| May | 50°F (10°C) | 3.6 in | |
| June | 57°F (14°C) | 3.5 in | |
| July | 65°F (18°C) | 4.0 in | |
| August | 67°F (20°C) | 5.5 in | Warmest |
| September | 59°F (15°C) | 6.2 in | Wettest |
| October | 48°F (9°C) | 4.6 in | |
| November | 35°F (2°C) | 3.5 in | |
| December | 23°F (-5°C) | 2.3 in |
Ashoro has a seasonal temperature swing of 53°F / from 14°F in January to 67°F in August. Total annual precipitation is 43.3 inches, with September being the wettest month (6.2") and February the driest (1.9").