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Weather & Climate in Sanjūkyūsen, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sanjūkyūsen has a cool climate with an average annual temperature of 40°F (4°C). Winters average 15°F in January while summers reach 62°F in July. The area gets 262 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 40.7 inches. The area receives 12.9 inches of snow annually. The city sits at an elevation of 1,178 feet.
Temperature
15°F Jan (-10°C)
62°F Jul (17°C)
| Annual Average | 39.5°F |
| 27% below US avg | |
| January Average | 15°F (-10°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 262 days/yr |
Geography
| Elevation | 1,178 ft (359 m) |
| Area | 405.2 sq mi (1,049.5 km²) |
| Population Density | 6/sq mi |
| Coordinates | 44.0333°N, 143.0000°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
314 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.6.
| Jan 15, 1993 | 52 km NE of Otofuke, Japan | M7.6 | 99 km | 102 km |
| Feb 2, 2013 | 18 km SSW of Obihiro, Japan | M6.9 | 141 km | 107 km |
| May 12, 1999 | 44 km W of Kushiro, Japan | M6.2 | 130 km | 103 km |
| Jan 15, 1993 | 17 km W of Kushiro, Japan | M6.1 | 150 km | 112 km |
| Oct 21, 2011 | 16 km NE of Asahikawa, Japan | M6.1 | 45 km | 187 km |
| Feb 19, 2003 | 26 km NNE of Rumoi, Japan | M5.9 | 97 km | 214 km |
| Jul 1, 2007 | 32 km W of Shibetsu, Japan | M5.8 | 145 km | 130 km |
| Jun 12, 1991 | 17 km SE of Obihiro, Japan | M5.8 | 141 km | 109 km |
| May 23, 1995 | Hokkaido, Japan region | M5.6 | 110 km | 17 km |
| Oct 25, 1991 | 36 km N of Kushiro, Japan | M5.5 | 136 km | 98 km |
| Aug 15, 1990 | 43 km ESE of Kamikawa, Japan | M5.3 | 39 km | 162 km |
| Jun 20, 2021 | 29 km NE of Shimo-furano, Japan | M5.3 | 61 km | 152 km |
| Jun 15, 1997 | 25 km WNW of Kushiro, Japan | M5.3 | 139 km | 97 km |
| Dec 22, 1997 | 17 km ENE of Otofuke, Japan | M5.3 | 111 km | 115 km |
| Sep 15, 1995 | 48 km WNW of Kushiro, Japan | M5.2 | 126 km | 106 km |
| Apr 10, 2006 | 30 km W of Shibetsu, Japan | M5.1 | 146 km | 120 km |
| Jul 5, 2024 | 10 km WNW of Nayoro, Japan | M5.1 | 66 km | 232 km |
| Aug 13, 2013 | 35 km WSW of Kitami, Japan | M5.1 | 51 km | 178 km |
| Feb 21, 1990 | 27 km SSW of Nayoro, Japan | M5.1 | 59 km | 33 km |
| Nov 10, 1990 | 23 km W of Nayoro, Japan | M5.1 | 77 km | 16 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 0.9 m (3 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1938 | E. HOKKAIDO ISLAND | Earthquake | 0.9 m | 1 | 115 km |
| 1956 | NE. HOKKAIDO ISLAND | Earthquake | 0.4 m | — | 93 km |
| 1863 | NW. HOKKAIDO ISLAND | Earthquake | — | — | 135 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
8 volcanoes within 200 km. Closest: Taisetsuzan (43 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Taisetsuzan | Stratovolcano(es) | 2,291 m (7,516 ft) | 1739 | 43 km |
| Maruyama | Stratovolcano(es) | 2,013 m (6,604 ft) | 1898 | 69 km |
| Tokachidake | Stratovolcano(es) | 2,077 m (6,814 ft) | 2004 | 73 km |
| Akan | Caldera | 1,499 m (4,918 ft) | 2008 | 109 km |
| Kussharo | Caldera | 574 m (1,883 ft) | 1320 | 124 km |
| Mashu | Caldera | 857 m (2,812 ft) | 1080 | 135 km |
| Shiretoko-Iozan | Stratovolcano | 1,562 m (5,125 ft) | 1936 | 173 km |
| Shikotsu | Caldera | 1,320 m (4,331 ft) | 1979 | 199 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 15°F (-10°C) | 2.4 in | Coldest |
| February | 15°F (-10°C) | 1.8 in | Driest |
| March | 23°F (-5°C) | 2.5 in | |
| April | 37°F (3°C) | 2.4 in | |
| May | 47°F (8°C) | 3.1 in | |
| June | 54°F (12°C) | 3.1 in | |
| July | 62°F (17°C) | 4.0 in | |
| August | 65°F (18°C) | 5.6 in | Warmest, Wettest |
| September | 57°F (14°C) | 5.5 in | |
| October | 45°F (7°C) | 4.2 in | |
| November | 33°F (0°C) | 3.5 in | |
| December | 22°F (-6°C) | 2.7 in |
Sanjūkyūsen has a seasonal temperature swing of 50°F / from 15°F in January to 65°F in August. Total annual precipitation is 40.7 inches, with August being the wettest month (5.6") and February the driest (1.8").