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Weather & Climate in Itayanagi, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Itayanagi experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 27°F in January while summers reach 71°F in July. The area gets 241 sunny days per year, above the national average. Annual precipitation totals 52.3 inches (wetter than the 38-inch national average). The area receives 16.4 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 59 feet.
Temperature
27°F Jan (-3°C)
71°F Jul (22°C)
| Annual Average | 50.2°F |
| 7% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 241 days/yr |
Geography
| Elevation | 59 ft (18 m) |
| Area | 24.3 sq mi (62.9 km²) |
| Population Density | 549/sq mi |
| Coordinates | 40.6955°N, 140.4550°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
480 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.8.
| Jul 23, 2008 | 29 km ENE of Morioka, Japan | M6.8 | 131 km | 108 km |
| Aug 24, 1992 | 9 km NNW of Honch?, Japan | M6.2 | 144 km | 121 km |
| Mar 11, 2011 | 88 km WNW of Noshiro, Japan | M6.2 | 121 km | 10 km |
| Aug 10, 2014 | 78 km E of Mutsu, Japan | M6.1 | 150 km | 41 km |
| Apr 1, 2024 | 7 km SW of Kuji, Japan | M5.9 | 122 km | 73 km |
| Sep 3, 1998 | 19 km W of Shizukuishi, Japan | M5.9 | 112 km | 38 km |
| Mar 11, 2011 | 18 km E of Misawa, Japan | M5.8 | 97 km | 45 km |
| Jul 26, 1999 | 26 km ENE of Misawa, Japan | M5.7 | 103 km | 104 km |
| Jun 4, 2008 | 135 km WSW of Kamiiso, Japan | M5.7 | 150 km | 205 km |
| Jun 14, 2014 | 12 km WNW of Hanamaki, Japan | M5.5 | 147 km | 92 km |
| Jul 9, 2015 | 15 km S of Hachinohe, Japan | M5.5 | 93 km | 81 km |
| Feb 17, 2015 | 51 km N of Miyako, Japan | M5.5 | 138 km | 47 km |
| Dec 29, 1994 | 59 km ENE of Hachinohe, Japan | M5.5 | 140 km | 56 km |
| Apr 2, 2001 | 25 km ENE of Hachinohe, Japan | M5.5 | 112 km | 64 km |
| Aug 15, 2019 | 19 km NW of Misawa, Japan | M5.4 | 68 km | 86 km |
| Jan 16, 1992 | 58 km ENE of Mutsu, Japan | M5.4 | 148 km | 73 km |
| Jun 27, 2010 | 55 km NE of Mutsu, Japan | M5.3 | 147 km | 68 km |
| Aug 24, 2009 | 34 km NW of Shimokizukuri, Japan | M5.3 | 48 km | 176 km |
| Feb 4, 2004 | 34 km ESE of Ichinohe, Japan | M5.2 | 120 km | 62 km |
| Jun 16, 2016 | 22 km ENE of Honch?, Japan | M5.2 | 149 km | 14 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
4 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2002 | Higos | Category 1 | 75 mph | 83 km |
| 2000 | Kirogi | Category 1 | 63 mph | 267 km |
| 1998 | Vicki | Category 1 | 58 mph | 111 km |
| 1995 | Ryan | Category 1 | 40 mph | 223 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
18 tsunamis recorded within 500 km. Highest wave on record: 90.0 m (295 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1741 | W. HOKKAIDO ISLAND | Explosion | 90.0 m | 2,000 | 128 km |
| 1983 | NOSHIRO, JAPAN | Earthquake | 14.9 m | 104 | 117 km |
| 1763 | SANRIKU | Earthquake | 5.0 m | - | 131 km |
| 1793 | W. OFF AOMORI | Earthquake | 1.8 m | 12 | 46 km |
| 1939 | NW. HONSHU ISLAND | Earthquake | 1.2 m | 27 | 105 km |
| 1983 | N. HONSHU ISLAND | Earthquake | 1.0 m | - | 135 km |
| 1810 | NW. HONSHU ISLAND | Earthquake | 1.0 m | 57 | 100 km |
| 2025 | OFF NORTHEAST COAST HONSHU | Earthquake | 0.7 m | - | 148 km |
| 1983 | NOSHIRO, JAPAN | Earthquake | 0.6 m | - | 137 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | 0.6 m | - | 131 km |
| 1912 | SANRIKU | Earthquake | 0.5 m | - | 132 km |
| 1945 | SANRIKU | Earthquake | 0.4 m | 2 | 140 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | 0.1 m | - | 135 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | - | - | 127 km |
| 1766 | SANRIKU | Earthquake | - | 1,700 | 31 km |
| 1763 | SANRIKU, HACHIONHE | Earthquake | - | - | 130 km |
| 1644 | HONJO, AKITA | Earthquake | - | 117 | 147 km |
| 1341 | JUSANKO, TSUGARU AOMORI PREFECTURE | Earthquake | - | 2,600 | 87 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
14 volcanoes within 200 km. Closest: Iwakisan (14 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Iwakisan | Stratovolcano | 1,625 m (5,331 ft) | 1863 | 14 km |
| Hakkodasan | Stratovolcano(es) | 1,585 m (5,200 ft) | 1550 | 36 km |
| Towada | Caldera | 1,011 m (3,317 ft) | 915 | 41 km |
| Akita-Yakeyama | Stratovolcano | 1,366 m (4,482 ft) | 1997 | 85 km |
| Osorezan | Stratovolcano | 878 m (2,881 ft) | 1787 | 86 km |
| Hachimantai | Stratovolcano | 1,613 m (5,292 ft) | -5350 | 89 km |
| Megata | Maar(s) | 291 m (955 ft) | -2050 | 103 km |
| Iwatesan | Complex | 2,038 m (6,686 ft) | 1919 | 105 km |
| Akita-Komagatake | Stratovolcano(es) | 1,637 m (5,371 ft) | 1971 | 108 km |
| Oshima-Oshima | Stratovolcano | 732 m (2,402 ft) | 1790 | 129 km |
| Esan | Lava dome(s) | 618 m (2,028 ft) | 1874 | 137 km |
| Hokkaido-Komagatake | Stratovolcano | 1,131 m (3,711 ft) | 2000 | 153 km |
| Chokaisan | Stratovolcano(es) | 2,236 m (7,336 ft) | 1974 | 181 km |
| Kurikomayama | Stratovolcano | 1,627 m (5,338 ft) | 1950 | 195 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 4.5 in | Coldest |
| February | 29°F (-2°C) | 3.7 in | |
| March | 35°F (2°C) | 3.2 in | |
| April | 47°F (8°C) | 3.1 in | Driest |
| May | 57°F (14°C) | 3.2 in | |
| June | 64°F (18°C) | 3.5 in | |
| July | 71°F (22°C) | 4.9 in | |
| August | 74°F (23°C) | 5.6 in | Warmest |
| September | 67°F (19°C) | 6.1 in | Wettest |
| October | 55°F (13°C) | 4.7 in | |
| November | 44°F (7°C) | 4.8 in | |
| December | 33°F (0°C) | 5.0 in |
Itayanagi has a seasonal temperature swing of 47°F / from 27°F in January to 74°F in August. Total annual precipitation is 52.3 inches, with September being the wettest month (6.1") and April the driest (3.1").