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Weather & Climate in Ōmagari, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ōmagari experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 29°F in January while summers reach 73°F in July. The area gets 217 sunny days per year. Annual precipitation totals 65.4 inches (wetter than the 38-inch national average). The area receives 22.4 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 92 feet.
Temperature
29°F Jan (-2°C)
73°F Jul (23°C)
| Annual Average | 51.1°F |
| 5% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 217 days/yr |
Geography
| Elevation | 92 ft (28 m) |
| Area | 40.4 sq mi (104.7 km²) |
| Population Density | 960/sq mi |
| Coordinates | 39.4500°N, 140.4833°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
869 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.0.
| May 26, 2003 | 27 km SSW of ?funato, Japan | M7.0 | 115 km | 68 km |
| Mar 20, 2021 | 30 km E of Ishinomaki, Japan | M7.0 | 150 km | 43 km |
| Jun 13, 2008 | 24 km WSW of Mizusawa, Japan | M6.9 | 58 km | 8 km |
| Jul 23, 2008 | 29 km ENE of Morioka, Japan | M6.8 | 93 km | 108 km |
| May 12, 2015 | 32 km SE of ?funato, Japan | M6.8 | 147 km | 35 km |
| Dec 2, 2001 | 3 km NW of Hanamaki, Japan | M6.5 | 52 km | 124 km |
| Nov 3, 2002 | 30 km SE of ?funato, Japan | M6.4 | 143 km | 39 km |
| Jun 18, 2019 | 31 km WSW of Tsuruoka, Japan | M6.4 | 125 km | 12 km |
| Jul 23, 2011 | 21 km SSE of ?funato, Japan | M6.3 | 130 km | 41 km |
| Jun 17, 2012 | 19 km SSE of ?funato, Japan | M6.3 | 130 km | 36 km |
| Apr 19, 2020 | 31 km SE of ?funato, Japan | M6.3 | 145 km | 38 km |
| Mar 25, 2011 | 36 km SSE of ?funato, Japan | M6.2 | 142 km | 39 km |
| Mar 27, 2012 | 24 km NNE of Miyako, Japan | M6.1 | 139 km | 15 km |
| Jul 25, 2003 | 7 km NW of Matsushima, Japan | M6.1 | 123 km | 6 km |
| Aug 10, 1996 | 25 km NE of Shinj?, Japan | M6.0 | 60 km | 10 km |
| Mar 31, 2011 | 18 km SSE of ?funato, Japan | M6.0 | 129 km | 42 km |
| Sep 3, 1998 | 19 km W of Shizukuishi, Japan | M5.9 | 38 km | 38 km |
| Apr 1, 2024 | 7 km SW of Kuji, Japan | M5.9 | 129 km | 73 km |
| Apr 17, 2013 | 29 km ENE of Ishinomaki, Japan | M5.9 | 147 km | 51 km |
| Apr 1, 2011 | 6 km SE of ?tsuchi, Japan | M5.9 | 127 km | 41 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
7 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2019 | Faxai | Category 1 | 81 mph | 297 km |
| 2019 | Hagibis | Category 1 | 75 mph | 180 km |
| 2002 | Higos | Category 1 | 75 mph | 141 km |
| 2000 | Kirogi | Category 1 | 63 mph | 203 km |
| 1998 | Vicki | Category 1 | 58 mph | 113 km |
| 1995 | Ryan | Category 1 | 40 mph | 208 km |
| 1993 | Vernon | Category 1 | 69 mph | 265 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
10 tsunamis recorded within 500 km. Highest wave on record: 9.0 m (30 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1833 | NW. HONSHU ISLAND | Earthquake | 9.0 m | 85 | 130 km |
| 2008 | ARATOZAWA, JAPAN | Eruption + Earthquake | 2.5 m | 23 | 58 km |
| 1939 | NW. HONSHU ISLAND | Earthquake | 1.2 m | 27 | 111 km |
| 1810 | NW. HONSHU ISLAND | Earthquake | 1.0 m | 57 | 71 km |
| 1804 | NW. HONSHU ISLAND | Earthquake | 1.0 m | 450 | 64 km |
| 2019 | NIIGATA | Earthquake | 0.1 m | — | 125 km |
| 1894 | YAMAGATA, JAPAN | Earthquake | — | 726 | 85 km |
| 1644 | HONJO, AKITA | Earthquake | — | 117 | 33 km |
| 1088 | MIYAKO, IWATE PREFECTURE | Earthquake | — | — | 128 km |
| 850 | NW. HONSHU ISLAND | Eruption + Earthquake | — | — | 71 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
13 volcanoes within 200 km. Closest: Akita-Komagatake (44 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Akita-Komagatake | Stratovolcano(es) | 1,637 m (5,371 ft) | 1971 | 44 km |
| Chokaisan | Stratovolcano(es) | 2,236 m (7,336 ft) | 1974 | 54 km |
| Kurikomayama | Stratovolcano | 1,627 m (5,338 ft) | 1950 | 60 km |
| Akita-Yakeyama | Stratovolcano | 1,366 m (4,482 ft) | 1997 | 62 km |
| Iwatesan | Complex | 2,038 m (6,686 ft) | 1919 | 63 km |
| Hachimantai | Stratovolcano | 1,613 m (5,292 ft) | -5350 | 65 km |
| Naruko | Caldera | 470 m (1,542 ft) | 837 | 83 km |
| Megata | Maar(s) | 291 m (955 ft) | -2050 | 85 km |
| Towada | Caldera | 1,011 m (3,317 ft) | 915 | 123 km |
| Iwakisan | Stratovolcano | 1,625 m (5,331 ft) | 1863 | 135 km |
| Hakkodasan | Stratovolcano(es) | 1,585 m (5,200 ft) | 1550 | 139 km |
| Zaozan [Zaosan] | Complex | 1,841 m (6,040 ft) | 1940 | 145 km |
| Azumayama | Stratovolcano(es) | 1,949 m (6,394 ft) | 1977 | 192 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 6.3 in | Coldest |
| February | 29°F (-2°C) | 4.8 in | |
| March | 35°F (2°C) | 4.1 in | |
| April | 47°F (8°C) | 4.0 in | |
| May | 58°F (14°C) | 3.6 in | Driest |
| June | 66°F (19°C) | 4.7 in | |
| July | 73°F (23°C) | 6.9 in | |
| August | 76°F (25°C) | 5.8 in | Warmest |
| September | 67°F (20°C) | 6.2 in | |
| October | 56°F (13°C) | 5.6 in | |
| November | 44°F (7°C) | 6.2 in | |
| December | 34°F (1°C) | 7.2 in | Wettest |
Ōmagari has a seasonal temperature swing of 48°F / from 29°F in January to 76°F in August. Total annual precipitation is 65.4 inches, with December being the wettest month (7.2") and May the driest (3.6").