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Weather & Climate in Ogunimachi, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ogunimachi experiences four distinct seasons with an average annual temperature of 51°F (10°C). Winters average 29°F in January while summers reach 72°F in July. The area gets 215 sunny days per year. Annual precipitation totals 66.5 inches (wetter than the 38-inch national average). The area receives 21.7 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 453 feet.
Temperature
29°F Jan (-2°C)
72°F Jul (22°C)
| Annual Average | 50.7°F |
| 6% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 215 days/yr |
Geography
| Elevation | 453 ft (138 m) |
| Area | 284.8 sq mi (737.6 km²) |
| Population Density | 26/sq mi |
| Coordinates | 38.0615°N, 139.7481°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
697 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.9.
| Jun 13, 2008 | 24 km WSW of Mizusawa, Japan | M6.9 | 146 km | 8 km |
| Apr 11, 2011 | 17 km SSW of Ishikawa, Japan | M6.6 | 131 km | 11 km |
| Jul 16, 2007 | 20 km NNW of Kashiwazaki, Japan | M6.6 | 129 km | 12 km |
| Jun 18, 2019 | 31 km WSW of Tsuruoka, Japan | M6.4 | 68 km | 12 km |
| Mar 11, 2011 | 30 km NNE of Namie, Japan | M6.3 | 132 km | 32 km |
| Jul 24, 2011 | 43 km NE of Namie, Japan | M6.3 | 149 km | 40 km |
| Jul 25, 2003 | 7 km NW of Matsushima, Japan | M6.1 | 116 km | 6 km |
| Aug 10, 1996 | 25 km NE of Shinj?, Japan | M6.0 | 116 km | 10 km |
| Mar 11, 2011 | 17 km ESE of Namie, Japan | M6.0 | 145 km | 49 km |
| Mar 11, 2011 | 15 km E of Namie, Japan | M6.0 | 142 km | 37 km |
| Apr 12, 2011 | 8 km WSW of Ishikawa, Japan | M5.9 | 119 km | 11 km |
| Mar 11, 2011 | 4 km SSW of Namie, Japan | M5.9 | 128 km | 40 km |
| May 11, 1997 | 5 km NNE of Iwaki, Japan | M5.9 | 149 km | 49 km |
| Feb 25, 2013 | 29 km NE of Numata, Japan | M5.8 | 143 km | 10 km |
| Nov 27, 1993 | 9 km NNE of Wakuya, Japan | M5.8 | 139 km | 104 km |
| Apr 16, 2008 | 6 km ENE of Yuza, Japan | M5.8 | 110 km | 166 km |
| Apr 11, 2011 | 14 km SSE of Marumori, Japan | M5.8 | 98 km | 10 km |
| Jan 22, 1992 | 8 km WNW of Higashine, Japan | M5.7 | 67 km | 116 km |
| Apr 1, 2012 | 9 km NE of Iwaki, Japan | M5.7 | 150 km | 48 km |
| Jul 16, 2007 | 16 km NNW of Kashiwazaki, Japan | M5.7 | 129 km | 15 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
17 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2019 | Faxai | Category 2 | 92 mph | 222 km |
| 2019 | Hagibis | Category 1 | 81 mph | 145 km |
| 2018 | Jebi | Category 1 | 81 mph | 290 km |
| 2011 | Roke | Category 1 | 81 mph | 245 km |
| 2007 | Fitow | Category 1 | 75 mph | 278 km |
| 2005 | Mawar | Category 2 | 75 mph | 255 km |
| 2004 | Ma-on | Category 2 | 69 mph | 209 km |
| 2002 | Higos | Category 1 | 75 mph | 93 km |
| 2001 | Danas | Category 1 | 63 mph | 194 km |
| 2000 | Kirogi | Category 1 | 69 mph | 200 km |
| 1998 | Vicki | Category 2 | 63 mph | 57 km |
| 1998 | Stella | Category 1 | 63 mph | 207 km |
| 1996 | Violet | Category 1 | 81 mph | 280 km |
| 1995 | Ryan | Category 1 | 40 mph | 240 km |
| 1994 | Orchid | Category 1 | 63 mph | 296 km |
| 1993 | Vernon | Category 1 | 75 mph | 182 km |
| 1981 | Thad | Category 1 | - | 231 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
11 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 | 107 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | 5.8 m | 36 | 58 km |
| 2008 | ARATOZAWA, JAPAN | Eruption + Earthquake | 2.5 m | 23 | 146 km |
| 1804 | NW. HONSHU ISLAND | Earthquake | 1.0 m | 450 | 111 km |
| 2019 | NIIGATA | Earthquake | 0.1 m | - | 69 km |
| 2007 | HONSHU: W COAST | Earthquake | - | 15 | 124 km |
| 1894 | YAMAGATA, JAPAN | Earthquake | - | 726 | 93 km |
| 1802 | NW. HONSHU ISLAND | Earthquake | - | 19 | 133 km |
| 1762 | NW. HONSHU ISLAND | Earthquake | - | - | 92 km |
| 1448 | SADO, JAPAN | Earthquake | - | - | 150 km |
| 850 | NW. HONSHU ISLAND | Eruption + Earthquake | - | - | 105 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Azumayama (57 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Azumayama | Stratovolcano(es) | 1,949 m (6,394 ft) | 1977 | 57 km |
| Bandaisan | Stratovolcano | 1,816 m (5,958 ft) | 1888 | 59 km |
| Zaozan [Zaosan] | Complex | 1,841 m (6,040 ft) | 1940 | 61 km |
| Adatarayama | Stratovolcano(es) | 1,728 m (5,669 ft) | 1996 | 66 km |
| Numazawa | Shield | 835 m (2,740 ft) | -3400 | 71 km |
| Nasudake | Stratovolcano(es) | 1,915 m (6,283 ft) | 1963 | 106 km |
| Naruko | Caldera | 470 m (1,542 ft) | 837 | 114 km |
| Chokaisan | Stratovolcano(es) | 2,236 m (7,336 ft) | 1974 | 118 km |
| Takaharayama | Stratovolcano | 1,795 m (5,889 ft) | -4570 | 129 km |
| Hiuchigatake | Stratovolcano | 2,356 m (7,730 ft) | 1544 | 130 km |
| Kurikomayama | Stratovolcano | 1,627 m (5,338 ft) | 1950 | 135 km |
| Omanago Group | Lava dome(s) | 2,341 m (7,680 ft) | -3050 | 142 km |
| Nikko-Shiranesan | Shield | 2,578 m (8,458 ft) | 1952 | 144 km |
| Nantaisan | Stratovolcano | 2,486 m (8,156 ft) | -9540 | 146 km |
| Akagisan | Stratovolcano | 1,828 m (5,997 ft) | Unknown | 174 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 6.1 in | Coldest |
| February | 29°F (-2°C) | 4.6 in | |
| March | 34°F (1°C) | 4.3 in | |
| April | 47°F (8°C) | 4.1 in | |
| May | 57°F (14°C) | 3.9 in | Driest |
| June | 65°F (18°C) | 5.2 in | |
| July | 72°F (22°C) | 7.3 in | Wettest |
| August | 75°F (24°C) | 6.1 in | Warmest |
| September | 66°F (19°C) | 6.7 in | |
| October | 55°F (13°C) | 5.6 in | |
| November | 44°F (7°C) | 6.0 in | |
| December | 35°F (1°C) | 6.7 in |
Ogunimachi has a seasonal temperature swing of 46°F / from 29°F in January to 75°F in August. Total annual precipitation is 66.5 inches, with July being the wettest month (7.3") and May the driest (3.9").