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Weather & Climate in Setana, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Setana experiences four distinct seasons with an average annual temperature of 47°F (9°C). Winters average 24°F in January while summers reach 68°F in July. The area gets 249 sunny days per year, above the national average. Annual precipitation totals 48.1 inches (wetter than the 38-inch national average). The area receives 13.5 inches of snow annually. The city sits at an elevation of 23 feet.
Temperature
24°F Jan (-4°C)
68°F Jul (20°C)
| Annual Average | 47.3°F |
| 12% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 249 days/yr |
Geography
| Elevation | 23 ft (7 m) |
| Area | 987.3 sq mi (2,557.2 km²) |
| Population Density | 7/sq mi |
| Coordinates | 42.4514°N, 139.8514°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
487 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.7.
| Jul 12, 1993 | 107 km W of Iwanai, Japan | M7.7 | 70 km | 17 km |
| Aug 7, 1993 | 69 km WNW of Kamiiso, Japan | M6.5 | 52 km | 14 km |
| Dec 22, 1996 | 131 km W of Iwanai, Japan | M6.5 | 113 km | 227 km |
| Jul 12, 1993 | 109 km W of Iwanai, Japan | M6.3 | 93 km | 33 km |
| Aug 24, 1992 | 9 km NNW of Honch?, Japan | M6.2 | 85 km | 121 km |
| Jul 12, 1993 | 101 km W of Iwanai, Japan | M6.0 | 62 km | 29 km |
| Jan 12, 2021 | 84 km NW of Yoichi, Japan | M5.9 | 139 km | 214 km |
| Jun 4, 2008 | 135 km WSW of Kamiiso, Japan | M5.7 | 121 km | 205 km |
| Jul 12, 1993 | 125 km WNW of Kamiiso, Japan | M5.6 | 70 km | 33 km |
| Jul 8, 2014 | 13 km N of Shiraoi, Japan | M5.5 | 125 km | 10 km |
| Sep 19, 1993 | 111 km W of Iwanai, Japan | M5.5 | 93 km | 19 km |
| Oct 9, 1997 | 149 km W of Kamiiso, Japan | M5.5 | 97 km | 33 km |
| Jul 12, 1993 | 88 km W of Iwanai, Japan | M5.4 | 69 km | 33 km |
| Apr 12, 2018 | 110 km NW of Iwanai, Japan | M5.3 | 138 km | 217 km |
| Oct 30, 1996 | 161 km W of Kamiiso, Japan | M5.3 | 125 km | 222 km |
| Jul 15, 1993 | 126 km WSW of Iwanai, Japan | M5.3 | 73 km | 20 km |
| Jul 15, 1993 | 95 km WNW of Iwanai, Japan | M5.3 | 97 km | 22 km |
| Jul 16, 1993 | 94 km WNW of Iwanai, Japan | M5.3 | 98 km | 25 km |
| Aug 8, 2024 | 51 km W of Otobe, Japan | M5.2 | 56 km | 194 km |
| Jul 12, 1993 | 109 km W of Kamiiso, Japan | M5.2 | 78 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2002 | Higos | Category 1 | 69 mph | 252 km |
| 1998 | Vicki | Category 1 | 58 mph | 296 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
6 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 | 113 km |
| 1993 | SEA OF JAPAN | Earthquake | 32.0 m | 231 | 70 km |
| 1640 | SE. HOKKAIDO ISLAND | Explosion | 8.0 m | 700 | 80 km |
| 1983 | N. HONSHU ISLAND | Earthquake | 1.0 m | - | 138 km |
| 1993 | JAPAN | Earthquake | 0.2 m | - | 52 km |
| 1792 | W. HOKKAIDO ISLAND | Earthquake | - | - | 132 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
9 volcanoes within 200 km. Closest: Hokkaido-Komagatake (81 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Hokkaido-Komagatake | Stratovolcano | 1,131 m (3,711 ft) | 2000 | 81 km |
| Niseko | Stratovolcano(es) | 1,308 m (4,291 ft) | -4900 | 81 km |
| Toya | Stratovolcano | 733 m (2,405 ft) | 2001 | 82 km |
| Yoteizan | Stratovolcano | 1,888 m (6,194 ft) | -1050 | 89 km |
| Kuttara | Stratovolcano(es) | 549 m (1,801 ft) | 1820 | 107 km |
| Oshima-Oshima | Stratovolcano | 732 m (2,402 ft) | 1790 | 112 km |
| Shikotsu | Caldera | 1,320 m (4,331 ft) | 1979 | 128 km |
| Esan | Lava dome(s) | 618 m (2,028 ft) | 1874 | 130 km |
| Osorezan | Stratovolcano | 878 m (2,881 ft) | 1787 | 167 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 3.9 in | Coldest |
| February | 26°F (-3°C) | 3.0 in | |
| March | 33°F (0°C) | 2.8 in | Driest |
| April | 44°F (7°C) | 3.1 in | |
| May | 52°F (11°C) | 3.1 in | |
| June | 59°F (15°C) | 3.3 in | |
| July | 68°F (20°C) | 4.8 in | |
| August | 71°F (22°C) | 5.2 in | Warmest |
| September | 65°F (18°C) | 6.1 in | Wettest |
| October | 54°F (12°C) | 4.6 in | |
| November | 41°F (5°C) | 4.4 in | |
| December | 30°F (-1°C) | 3.8 in |
Setana has a seasonal temperature swing of 47°F / from 24°F in January to 71°F in August. Total annual precipitation is 48.1 inches, with September being the wettest month (6.1") and March the driest (2.8").