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Iwamizawa, Japan
Full City Profile
4.1
/5.0
A
Great
85,107
Population
458/sq mi density
56 ft
Elevation
17 meters
45°F
Avg Temperature
7°C
A
Overall
4.1 / 5.0
Strong
B
Economy
3.1 / 5.0
$28,900 median income, 3.0% unemployment
A+
Affordability
5.0 / 5.0
$68,000 home value, $340/mo rent
Iwamizawa has a cool climate with an average annual temperature of 45°F (7°C). Winters average 20°F in January while summers reach 68°F in July. The area gets 252 sunny days per year. Annual precipitation totals 46.2 inches. The area receives 13.9 inches of snow annually.
Temperature
20°F Jan (-7°C)
68°F Jul (20°C)
| Annual Average | 45.1°F |
| 16% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 252 days/yr |
Geography
| Elevation | 56 ft (17 m) |
| Area | 185.7 sq mi (481.0 km²) |
| Population Density | 458/sq mi |
| Coordinates | 43.2003°N, 141.7597°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 2.0 m (7 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1947 | W. HOKKAIDO ISLAND | Earthquake | 2.0 m | — | 91 km |
| 1982 | HOKKAIDO ISLAND | Earthquake | 1.3 m | 110 | 126 km |
| 1834 | W. HOKKAIDO ISLAND | Earthquake | — | — | 31 km |
| 1792 | W. HOKKAIDO ISLAND | Earthquake | — | — | 100 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
11 volcanoes within 200 km. Closest: Shikotsu (65 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Shikotsu | Caldera | 1,320 m (4,331 ft) | 1979 | 65 km |
| Tokachidake | Stratovolcano(es) | 2,077 m (6,814 ft) | 2004 | 79 km |
| Yoteizan | Stratovolcano | 1,888 m (6,194 ft) | -1050 | 88 km |
| Kuttara | Stratovolcano(es) | 549 m (1,801 ft) | 1820 | 93 km |
| Niseko | Stratovolcano(es) | 1,308 m (4,291 ft) | -4900 | 97 km |
| Taisetsuzan | Stratovolcano(es) | 2,291 m (7,516 ft) | 1739 | 102 km |
| Toya | Stratovolcano | 733 m (2,405 ft) | 2001 | 105 km |
| Maruyama | Stratovolcano(es) | 2,013 m (6,604 ft) | 1898 | 106 km |
| Hokkaido-Komagatake | Stratovolcano | 1,131 m (3,711 ft) | 2000 | 154 km |
| Esan | Lava dome(s) | 618 m (2,028 ft) | 1874 | 163 km |
| Akan | Caldera | 1,499 m (4,918 ft) | 2008 | 184 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 3.9 in | Coldest |
| February | 21°F (-6°C) | 3.0 in | |
| March | 29°F (-2°C) | 2.3 in | Driest |
| April | 42°F (6°C) | 2.5 in | |
| May | 53°F (12°C) | 2.7 in | |
| June | 61°F (16°C) | 2.9 in | |
| July | 68°F (20°C) | 3.9 in | |
| August | 70°F (21°C) | 5.9 in | Warmest, Wettest |
| September | 62°F (17°C) | 5.3 in | |
| October | 51°F (10°C) | 4.5 in | |
| November | 38°F (3°C) | 4.6 in | |
| December | 26°F (-3°C) | 4.7 in |
Iwamizawa has a seasonal temperature swing of 51°F / from 20°F in January to 70°F in August. Total annual precipitation is 46.2 inches, with August being the wettest month (5.9") and March the driest (2.3").