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Weather & Climate in Kosawada, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kosawada experiences four distinct seasons with an average annual temperature of 51°F (10°C). Winters average 30°F in January while summers reach 72°F in July. The area gets 228 sunny days per year, above the national average. Annual precipitation totals 59.8 inches (wetter than the 38-inch national average). The area receives 17.8 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 187 feet.
Temperature
30°F Jan (-1°C)
72°F Jul (22°C)
| Annual Average | 50.8°F |
| 6% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 228 days/yr |
Geography
| Elevation | 187 ft (57 m) |
| Area | 651.8 sq mi (1,688.1 km²) |
| Population Density | 3/sq mi |
| Coordinates | 40.0645°N, 140.2909°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
598 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 | 126 km | 8 km |
| Jul 23, 2008 | 29 km ENE of Morioka, Japan | M6.8 | 104 km | 108 km |
| Dec 2, 2001 | 3 km NW of Hanamaki, Japan | M6.5 | 100 km | 124 km |
| Mar 11, 2011 | 88 km WNW of Noshiro, Japan | M6.2 | 115 km | 10 km |
| Mar 27, 2012 | 24 km NNE of Miyako, Japan | M6.1 | 149 km | 15 km |
| Aug 10, 1996 | 25 km NE of Shinj?, Japan | M6.0 | 130 km | 10 km |
| Apr 1, 2024 | 7 km SW of Kuji, Japan | M5.9 | 120 km | 73 km |
| Sep 3, 1998 | 19 km W of Shizukuishi, Japan | M5.9 | 56 km | 38 km |
| Apr 16, 2008 | 6 km ENE of Yuza, Japan | M5.8 | 118 km | 166 km |
| Mar 11, 2011 | 31 km N of T?no, Japan | M5.8 | 121 km | 35 km |
| Mar 11, 2011 | 18 km E of Misawa, Japan | M5.8 | 130 km | 45 km |
| Jul 26, 1999 | 26 km ENE of Misawa, Japan | M5.7 | 142 km | 104 km |
| Mar 16, 2011 | 27 km NNE of Miyako, Japan | M5.7 | 149 km | 36 km |
| Aug 10, 1996 | 31 km ENE of Shinj?, Japan | M5.7 | 135 km | 10 km |
| Aug 10, 2004 | 2 km SE of Miyako, Japan | M5.7 | 150 km | 70 km |
| Oct 26, 1997 | 8 km WSW of Yokote, Japan | M5.6 | 87 km | 134 km |
| Nov 23, 1997 | 97 km W of Tenn?, Japan | M5.6 | 125 km | 23 km |
| Feb 17, 2015 | 51 km N of Miyako, Japan | M5.5 | 136 km | 47 km |
| Jun 14, 2008 | 35 km SSE of Yuzawa, Japan | M5.5 | 136 km | 6 km |
| Jun 14, 2014 | 12 km WNW of Hanamaki, Japan | M5.5 | 92 km | 92 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
5 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2019 | Hagibis | Category 1 | 69 mph | 245 km |
| 2002 | Higos | Category 1 | 75 mph | 106 km |
| 2000 | Kirogi | Category 1 | 63 mph | 240 km |
| 1998 | Vicki | Category 1 | 58 mph | 103 km |
| 1995 | Ryan | Category 1 | 40 mph | 189 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
15 tsunamis recorded within 500 km. Highest wave on record: 14.9 m (49 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1983 | NOSHIRO, JAPAN | Earthquake | 14.9 m | 104 | 110 km |
| 2008 | ARATOZAWA, JAPAN | Eruption + Earthquake | 2.5 m | 23 | 126 km |
| 1793 | W. OFF AOMORI | Earthquake | 1.8 m | 12 | 92 km |
| 1939 | NW. HONSHU ISLAND | Earthquake | 1.2 m | 27 | 67 km |
| 1810 | NW. HONSHU ISLAND | Earthquake | 1.0 m | 57 | 38 km |
| 1804 | NW. HONSHU ISLAND | Earthquake | 1.0 m | 450 | 117 km |
| 1983 | NOSHIRO, JAPAN | Earthquake | 0.6 m | - | 116 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | 0.6 m | - | 113 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | 0.1 m | - | 124 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | - | - | 116 km |
| 1894 | YAMAGATA, JAPAN | Earthquake | - | 726 | 136 km |
| 1766 | SANRIKU | Earthquake | - | 1,700 | 99 km |
| 1644 | HONJO, AKITA | Earthquake | - | 117 | 76 km |
| 1341 | JUSANKO, TSUGARU AOMORI PREFECTURE | Earthquake | - | 2,600 | 124 km |
| 850 | NW. HONSHU ISLAND | Eruption + Earthquake | - | - | 123 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
13 volcanoes within 200 km. Closest: Akita-Yakeyama (41 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Akita-Yakeyama | Stratovolcano | 1,366 m (4,482 ft) | 1997 | 41 km |
| Megata | Maar(s) | 291 m (955 ft) | -2050 | 49 km |
| Hachimantai | Stratovolcano | 1,613 m (5,292 ft) | -5350 | 49 km |
| Akita-Komagatake | Stratovolcano(es) | 1,637 m (5,371 ft) | 1971 | 55 km |
| Iwatesan | Complex | 2,038 m (6,686 ft) | 1919 | 65 km |
| Iwakisan | Stratovolcano | 1,625 m (5,331 ft) | 1863 | 66 km |
| Towada | Caldera | 1,011 m (3,317 ft) | 915 | 70 km |
| Hakkodasan | Stratovolcano(es) | 1,585 m (5,200 ft) | 1550 | 83 km |
| Chokaisan | Stratovolcano(es) | 2,236 m (7,336 ft) | 1974 | 109 km |
| Kurikomayama | Stratovolcano | 1,627 m (5,338 ft) | 1950 | 130 km |
| Osorezan | Stratovolcano | 878 m (2,881 ft) | 1787 | 152 km |
| Naruko | Caldera | 470 m (1,542 ft) | 837 | 153 km |
| Oshima-Oshima | Stratovolcano | 732 m (2,402 ft) | 1790 | 179 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 4.7 in | Coldest |
| February | 30°F (-1°C) | 3.8 in | |
| March | 35°F (2°C) | 3.6 in | Driest |
| April | 47°F (8°C) | 3.9 in | |
| May | 56°F (13°C) | 3.8 in | |
| June | 64°F (18°C) | 4.4 in | |
| July | 72°F (22°C) | 6.5 in | |
| August | 75°F (24°C) | 6.1 in | Warmest |
| September | 66°F (19°C) | 6.7 in | Wettest |
| October | 55°F (13°C) | 5.3 in | |
| November | 44°F (7°C) | 5.4 in | |
| December | 35°F (2°C) | 5.7 in |
Kosawada has a seasonal temperature swing of 45°F / from 30°F in January to 75°F in August. Total annual precipitation is 59.8 inches, with September being the wettest month (6.7") and March the driest (3.6").