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. 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) |
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°E |
| 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").