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Weather & Climate in Ōyauchi, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ōyauchi experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 34°F in January while summers reach 69°F in July. The area gets 242 sunny days per year, above the national average. Annual precipitation totals 52.1 inches (wetter than the 38-inch national average). The area receives 3.2 inches of snow annually. The city sits at an elevation of 98 feet.
Temperature
34°F Jan (1°C)
69°F Jul (21°C)
| Annual Average | 52.0°F |
| 4% below US avg | |
| January Average | 34°F (1°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 242 days/yr |
Geography
| Elevation | 98 ft (30 m) |
| Area | 114.6 sq mi (296.9 km²) |
| Population Density | 47/sq mi |
| Coordinates | 37.2000°N, 140.9833°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
4,086 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.9.
| Mar 11, 2011 | 47 km E of ?arai, Japan | M7.9 | 103 km | 43 km |
| Mar 16, 2022 | 57 km ENE of Namie, Japan | M7.3 | 78 km | 41 km |
| Feb 13, 2021 | 73 km ENE of Namie, Japan | M7.1 | 91 km | 44 km |
| Apr 7, 2011 | 29 km ESE of Ishinomaki, Japan | M7.1 | 131 km | 42 km |
| Jul 19, 2008 | 107 km E of Namie, Japan | M7.0 | 116 km | 22 km |
| May 1, 2021 | 30 km SSE of Onagawa Ch?, Japan | M6.9 | 124 km | 43 km |
| May 7, 2008 | 78 km NE of Hasaki, Japan | M6.9 | 125 km | 27 km |
| Feb 16, 1996 | 123 km E of Namie, Japan | M6.7 | 125 km | 41 km |
| Apr 11, 2011 | 17 km SSW of Ishikawa, Japan | M6.6 | 56 km | 11 km |
| Jul 11, 2014 | 139 km ESE of Namie, Japan | M6.5 | 132 km | 20 km |
| Mar 11, 2011 | 81 km NE of Hasaki, Japan | M6.5 | 126 km | 7 km |
| Mar 14, 2010 | 59 km ENE of Namie, Japan | M6.5 | 81 km | 32 km |
| Mar 11, 2011 | 108 km ESE of Kitaibaraki, Japan | M6.4 | 118 km | 32 km |
| Aug 4, 2019 | 61 km ENE of Namie, Japan | M6.3 | 83 km | 38 km |
| Mar 11, 2011 | 30 km NNE of Namie, Japan | M6.3 | 60 km | 32 km |
| Jul 24, 2011 | 43 km NE of Namie, Japan | M6.3 | 69 km | 40 km |
| Mar 11, 2011 | near the east coast of Honshu, Japan | M6.3 | 101 km | 25 km |
| Jul 30, 2011 | 13 km SSE of Iwaki, Japan | M6.3 | 29 km | 38 km |
| Mar 11, 2011 | 103 km E of Namie, Japan | M6.3 | 114 km | 51 km |
| Mar 11, 2011 | 70 km ESE of Kitaibaraki, Japan | M6.2 | 83 km | 40 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
22 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Ampil | Category 3 | 98 mph | 224 km |
| 2024 | Jebi | Category 1 | 75 mph | 204 km |
| 2019 | Faxai | Category 2 | 92 mph | 78 km |
| 2019 | Hagibis | Category 1 | 92 mph | 54 km |
| 2018 | Shanshan | Category 1 | 75 mph | 267 km |
| 2016 | Lionrock | Category 1 | 81 mph | 204 km |
| 2011 | Roke | Category 1 | 86 mph | 215 km |
| 2007 | Fitow | Category 1 | 75 mph | 239 km |
| 2005 | Mawar | Category 2 | 75 mph | 124 km |
| 2004 | Ma-on | Category 3 | 92 mph | 64 km |
| 2002 | Higos | Category 1 | 81 mph | 112 km |
| 2001 | Danas | Category 1 | 63 mph | 103 km |
| 2000 | Sonamu | Category 1 | 63 mph | 232 km |
| 2000 | Kirogi | Category 1 | 81 mph | 83 km |
| 1998 | Vicki | Category 1 | 58 mph | 201 km |
| 1998 | Stella | Category 1 | 69 mph | 160 km |
| 1996 | Violet | Category 1 | 81 mph | 135 km |
| 1996 | Dan | Category 1 | 58 mph | 252 km |
| 1995 | Oscar | Category 4 | 98 mph | 183 km |
| 1993 | Vernon | Category 1 | 75 mph | 46 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
20 tsunamis recorded within 500 km. Highest wave on record: 5.0 m (16 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1835 | SANRIKU | Earthquake | 5.0 m | — | 112 km |
| 2016 | E. COAST HONSHU ISLAND | Earthquake | 1.4 m | — | 42 km |
| 1938 | OFF FUKUSHIMA PREFECTURE | Earthquake | 1.3 m | — | 80 km |
| 1938 | OFF FUKUSHIMA PREFECTURE | Earthquake | 1.3 m | — | 67 km |
| 1897 | SANRIKU | Earthquake | 1.0 m | — | 129 km |
| 1938 | JAPAN TRENCH | Earthquake | 0.8 m | — | 67 km |
| 1959 | SANRIKU | Earthquake | 0.8 m | — | 113 km |
| 1938 | SANRIKU | Earthquake | 0.8 m | — | 51 km |
| 1978 | SANRIKU | Earthquake | 0.6 m | 28 | 144 km |
| 1938 | SANRIKU | Earthquake | 0.6 m | 1 | 65 km |
| 1938 | SANRIKU | Earthquake | 0.6 m | — | 64 km |
| 1982 | IBARAKI, JAPAN | Earthquake | 0.4 m | — | 129 km |
| 1961 | KASHIMA, JAPAN | Earthquake | 0.4 m | — | 138 km |
| 2022 | OFF FUKUSHIMA PREFECTURE | Earthquake | 0.3 m | 4 | 78 km |
| 1938 | SANRIKU | Earthquake | 0.3 m | — | 114 km |
| 1896 | KASHIMA, JAPAN | Earthquake | 0.3 m | — | 78 km |
| 2014 | SANRIKU | Earthquake | 0.2 m | — | 132 km |
| 2008 | OFF EAST COAST OF HONSHU ISLAND | Earthquake | 0.2 m | — | 116 km |
| 1938 | SANRIKU | Earthquake | 0.2 m | — | 110 km |
| 1935 | JAPAN | Earthquake | 0.2 m | — | 76 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
14 volcanoes within 200 km. Closest: Adatarayama (80 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Adatarayama | Stratovolcano(es) | 1,728 m (5,669 ft) | 1996 | 80 km |
| Azumayama | Stratovolcano(es) | 1,949 m (6,394 ft) | 1977 | 88 km |
| Nasudake | Stratovolcano(es) | 1,915 m (6,283 ft) | 1963 | 91 km |
| Bandaisan | Stratovolcano | 1,816 m (5,958 ft) | 1888 | 92 km |
| Takaharayama | Stratovolcano | 1,795 m (5,889 ft) | -4570 | 112 km |
| Zaozan [Zaosan] | Complex | 1,841 m (6,040 ft) | 1940 | 115 km |
| Numazawa | Shield | 835 m (2,740 ft) | -3400 | 128 km |
| Omanago Group | Lava dome(s) | 2,341 m (7,680 ft) | -3050 | 139 km |
| Nantaisan | Stratovolcano | 2,486 m (8,156 ft) | -9540 | 141 km |
| Nikko-Shiranesan | Shield | 2,578 m (8,458 ft) | 1952 | 150 km |
| Hiuchigatake | Stratovolcano | 2,356 m (7,730 ft) | 1544 | 153 km |
| Naruko | Caldera | 470 m (1,542 ft) | 837 | 171 km |
| Akagisan | Stratovolcano | 1,828 m (5,997 ft) | Unknown | 174 km |
| Kurikomayama | Stratovolcano | 1,627 m (5,338 ft) | 1950 | 197 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 1.2 in | Coldest, Driest |
| February | 34°F (1°C) | 2.0 in | |
| March | 38°F (4°C) | 3.2 in | |
| April | 48°F (9°C) | 4.5 in | |
| May | 56°F (14°C) | 4.9 in | |
| June | 62°F (17°C) | 6.3 in | |
| July | 69°F (21°C) | 5.6 in | |
| August | 73°F (23°C) | 6.4 in | Warmest |
| September | 67°F (19°C) | 7.7 in | Wettest |
| October | 57°F (14°C) | 6.1 in | |
| November | 47°F (9°C) | 2.8 in | |
| December | 39°F (4°C) | 1.4 in |
Ōyauchi has a seasonal temperature swing of 39°F / from 34°F in January to 73°F in August. Total annual precipitation is 52.1 inches, with September being the wettest month (7.7") and January the driest (1.2").