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Weather & Climate in Shirasawa, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Shirasawa experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 25°F in January while summers reach 68°F in July. The area gets 230 sunny days per year, above the national average. Annual precipitation totals 58.2 inches (wetter than the 38-inch national average). The area receives 16.6 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 817 feet.
Temperature
25°F Jan (-4°C)
68°F Jul (20°C)
| Annual Average | 47.1°F |
| 13% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 230 days/yr |
Geography
| Elevation | 817 ft (249 m) |
| Area | 202.4 sq mi (524.2 km²) |
| Population Density | 6/sq mi |
| Coordinates | 40.5901°N, 140.2840°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
397 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 | 133 km | 108 km |
| Dec 2, 2001 | 3 km NW of Hanamaki, Japan | M6.5 | 149 km | 124 km |
| Mar 11, 2011 | 88 km WNW of Noshiro, Japan | M6.2 | 105 km | 10 km |
| Apr 1, 2024 | 7 km SW of Kuji, Japan | M5.9 | 130 km | 73 km |
| Sep 3, 1998 | 19 km W of Shizukuishi, Japan | M5.9 | 105 km | 38 km |
| Mar 11, 2011 | 18 km E of Misawa, Japan | M5.8 | 112 km | 45 km |
| Jul 26, 1999 | 26 km ENE of Misawa, Japan | M5.7 | 119 km | 104 km |
| Jun 4, 2008 | 135 km WSW of Kamiiso, Japan | M5.7 | 147 km | 205 km |
| Oct 26, 1997 | 8 km WSW of Yokote, Japan | M5.6 | 145 km | 134 km |
| Nov 23, 1997 | 97 km W of Tenn?, Japan | M5.6 | 142 km | 23 km |
| Apr 2, 2001 | 25 km ENE of Hachinohe, Japan | M5.5 | 126 km | 64 km |
| Jul 9, 2015 | 15 km S of Hachinohe, Japan | M5.5 | 103 km | 81 km |
| Jun 14, 2014 | 12 km WNW of Hanamaki, Japan | M5.5 | 141 km | 92 km |
| Feb 17, 2015 | 51 km N of Miyako, Japan | M5.5 | 146 km | 47 km |
| Aug 15, 2019 | 19 km NW of Misawa, Japan | M5.4 | 85 km | 86 km |
| Aug 24, 2009 | 34 km NW of Shimokizukuri, Japan | M5.3 | 51 km | 176 km |
| Feb 4, 2004 | 34 km ESE of Ichinohe, Japan | M5.2 | 128 km | 62 km |
| Jul 22, 2022 | 10 km SSW of Misawa, Japan | M5.2 | 88 km | 87 km |
| Dec 1, 1997 | 99 km W of Tenn?, Japan | M5.1 | 143 km | 33 km |
| Feb 28, 2010 | 5 km NW of ?magari, Japan | M5.1 | 124 km | 122 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 | 296 km |
| 2002 | Higos | Category 1 | 75 mph | 95 km |
| 2000 | Kirogi | Category 1 | 63 mph | 271 km |
| 1998 | Vicki | Category 1 | 58 mph | 117 km |
| 1995 | Ryan | Category 1 | 40 mph | 205 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
16 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 | 127 km |
| 1983 | NOSHIRO, JAPAN | Earthquake | 14.9 m | 104 | 101 km |
| 1763 | SANRIKU | Earthquake | 5.0 m | — | 147 km |
| 1793 | W. OFF AOMORI | Earthquake | 1.8 m | 12 | 40 km |
| 1939 | NW. HONSHU ISLAND | Earthquake | 1.2 m | 27 | 86 km |
| 1983 | N. HONSHU ISLAND | Earthquake | 1.0 m | — | 130 km |
| 1810 | NW. HONSHU ISLAND | Earthquake | 1.0 m | 57 | 83 km |
| 1983 | NOSHIRO, JAPAN | Earthquake | 0.6 m | — | 119 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | 0.6 m | — | 113 km |
| 1912 | SANRIKU | Earthquake | 0.5 m | — | 145 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | 0.1 m | — | 119 km |
| 1964 | NW. HONSHU ISLAND | Earthquake | — | — | 111 km |
| 1766 | SANRIKU | Earthquake | — | 1,700 | 49 km |
| 1763 | SANRIKU, HACHIONHE | Earthquake | — | — | 145 km |
| 1644 | HONJO, AKITA | Earthquake | — | 117 | 133 km |
| 1341 | JUSANKO, TSUGARU AOMORI PREFECTURE | Earthquake | — | 2,600 | 80 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
14 volcanoes within 200 km. Closest: Iwakisan (8 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Iwakisan | Stratovolcano | 1,625 m (5,331 ft) | 1863 | 8 km |
| Hakkodasan | Stratovolcano(es) | 1,585 m (5,200 ft) | 1550 | 51 km |
| Towada | Caldera | 1,011 m (3,317 ft) | 915 | 51 km |
| Akita-Yakeyama | Stratovolcano | 1,366 m (4,482 ft) | 1997 | 80 km |
| Megata | Maar(s) | 291 m (955 ft) | -2050 | 85 km |
| Hachimantai | Stratovolcano | 1,613 m (5,292 ft) | -5350 | 85 km |
| Akita-Komagatake | Stratovolcano(es) | 1,637 m (5,371 ft) | 1971 | 102 km |
| Iwatesan | Complex | 2,038 m (6,686 ft) | 1919 | 102 km |
| Osorezan | Stratovolcano | 878 m (2,881 ft) | 1787 | 104 km |
| Oshima-Oshima | Stratovolcano | 732 m (2,402 ft) | 1790 | 128 km |
| Esan | Lava dome(s) | 618 m (2,028 ft) | 1874 | 154 km |
| Chokaisan | Stratovolcano(es) | 2,236 m (7,336 ft) | 1974 | 167 km |
| Hokkaido-Komagatake | Stratovolcano | 1,131 m (3,711 ft) | 2000 | 167 km |
| Kurikomayama | Stratovolcano | 1,627 m (5,338 ft) | 1950 | 186 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 4.4 in | Coldest |
| February | 26°F (-3°C) | 3.6 in | |
| March | 32°F (-0°C) | 3.5 in | Driest |
| April | 43°F (6°C) | 3.9 in | |
| May | 53°F (12°C) | 3.7 in | |
| June | 61°F (16°C) | 4.3 in | |
| July | 68°F (20°C) | 6.1 in | |
| August | 71°F (22°C) | 6.5 in | Warmest |
| September | 63°F (17°C) | 6.8 in | Wettest |
| October | 52°F (11°C) | 5.1 in | |
| November | 41°F (5°C) | 5.2 in | |
| December | 31°F (-1°C) | 5.1 in |
Shirasawa has a seasonal temperature swing of 46°F / from 25°F in January to 71°F in August. Total annual precipitation is 58.2 inches, with September being the wettest month (6.8") and March the driest (3.5").