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Weather & Climate in Naka-satsunai, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Naka-satsunai has a cool climate with an average annual temperature of 42°F (6°C). Winters average 15°F in January while summers reach 65°F in July. The area gets 257 sunny days per year, above the national average. Annual precipitation totals 43.7 inches. The area receives 8.3 inches of snow annually. The city sits at an elevation of 623 feet.
Temperature
15°F Jan (-10°C)
65°F Jul (18°C)
| Annual Average | 42.1°F |
| 22% below US avg | |
| January Average | 15°F (-10°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 257 days/yr |
Geography
| Elevation | 623 ft (190 m) |
| Area | 68.3 sq mi (176.9 km²) |
| Population Density | 57/sq mi |
| Coordinates | 42.7000°N, 143.1333°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
1,332 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M8.2.
| Sep 25, 2003 | 2003 Tokachi-Oki Earthquake | M8.2 | 117 km | 27 km |
| Jan 15, 1993 | 52 km NE of Otofuke, Japan | M7.6 | 81 km | 102 km |
| Sep 25, 2003 | 119 km ESE of Shizunai-furukawach?, Japan | M7.4 | 110 km | 33 km |
| Feb 2, 2013 | 18 km SSW of Obihiro, Japan | M6.9 | 9 km | 107 km |
| Jan 14, 2016 | 52 km SE of Shizunai-furukawach?, Japan | M6.7 | 86 km | 46 km |
| Oct 8, 2003 | 39 km SSE of Kushiro, Japan | M6.7 | 118 km | 32 km |
| Sep 29, 2003 | 58 km S of Kushiro, Japan | M6.5 | 106 km | 25 km |
| Nov 26, 1991 | 33 km SSE of Shizunai-furukawach?, Japan | M6.4 | 88 km | 56 km |
| Jun 5, 2009 | 105 km ESE of Shizunai-furukawach?, Japan | M6.4 | 101 km | 29 km |
| Jan 18, 2005 | 40 km E of Kushiro, Japan | M6.3 | 144 km | 42 km |
| Jun 11, 2023 | 20 km WSW of Biratori, Japan | M6.2 | 103 km | 121 km |
| May 12, 1999 | 44 km W of Kushiro, Japan | M6.2 | 68 km | 103 km |
| Jan 15, 1993 | 17 km W of Kushiro, Japan | M6.1 | 90 km | 112 km |
| Apr 11, 2004 | 38 km E of Kushiro, Japan | M6.1 | 141 km | 42 km |
| Oct 21, 2011 | 16 km NE of Asahikawa, Japan | M6.1 | 143 km | 187 km |
| Nov 13, 2000 | 62 km SSE of Kushiro, Japan | M6.0 | 136 km | 33 km |
| May 31, 2025 | 78 km S of Kushiro, Japan | M6.0 | 121 km | 21 km |
| Feb 20, 1997 | 61 km SSE of Shizunai-furukawach?, Japan | M6.0 | 99 km | 33 km |
| Feb 17, 2007 | 115 km ESE of Shizunai-furukawach?, Japan | M6.0 | 107 km | 31 km |
| Mar 25, 1993 | 108 km ESE of Shizunai-furukawach?, Japan | M6.0 | 104 km | 34 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 | 284 km |
| 2000 | Sonamu | Category 1 | 58 mph | 283 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
9 tsunamis recorded within 500 km. Highest wave on record: 6.5 m (21 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1952 | SE. HOKKAIDO ISLAND | Earthquake | 6.5 m | 33 | 85 km |
| 2003 | HOKKAIDO ISLAND | Earthquake | 4.4 m | 2 | 117 km |
| 1982 | HOKKAIDO ISLAND | Earthquake | 1.3 m | 110 | 88 km |
| 1938 | E. HOKKAIDO ISLAND | Earthquake | 0.9 m | 1 | 138 km |
| 1968 | OFF COAST OF HONSHU ISLAND | Earthquake | 0.6 m | — | 138 km |
| 1971 | JAPAN TRENCH | Earthquake | 0.5 m | — | 148 km |
| 1952 | SE. HOKKAIDO ISLAND | Earthquake | 0.3 m | — | 118 km |
| 1962 | SE. HOKKAIDO ISLAND | Earthquake | 0.1 m | — | 84 km |
| 2008 | HOKKAIDO ISLAND | Earthquake | 0.1 m | 6 | 103 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
11 volcanoes within 200 km. Closest: Maruyama (80 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Maruyama | Stratovolcano(es) | 2,013 m (6,604 ft) | 1898 | 80 km |
| Tokachidake | Stratovolcano(es) | 2,077 m (6,814 ft) | 2004 | 88 km |
| Akan | Caldera | 1,499 m (4,918 ft) | 2008 | 104 km |
| Taisetsuzan | Stratovolcano(es) | 2,291 m (7,516 ft) | 1739 | 110 km |
| Shikotsu | Caldera | 1,320 m (4,331 ft) | 1979 | 143 km |
| Kussharo | Caldera | 574 m (1,883 ft) | 1320 | 146 km |
| Mashu | Caldera | 857 m (2,812 ft) | 1080 | 151 km |
| Kuttara | Stratovolcano(es) | 549 m (1,801 ft) | 1820 | 163 km |
| Toya | Stratovolcano | 733 m (2,405 ft) | 2001 | 189 km |
| Yoteizan | Stratovolcano | 1,888 m (6,194 ft) | -1050 | 190 km |
| Esan | Lava dome(s) | 618 m (2,028 ft) | 1874 | 190 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 15°F (-10°C) | 2.1 in | Coldest |
| February | 16°F (-9°C) | 1.6 in | Driest |
| March | 26°F (-3°C) | 2.4 in | |
| April | 40°F (5°C) | 3.1 in | |
| May | 51°F (10°C) | 3.7 in | |
| June | 58°F (14°C) | 3.9 in | |
| July | 65°F (18°C) | 4.6 in | |
| August | 68°F (20°C) | 5.7 in | Warmest |
| September | 60°F (16°C) | 6.3 in | Wettest |
| October | 49°F (9°C) | 4.6 in | |
| November | 36°F (2°C) | 3.5 in | |
| December | 22°F (-5°C) | 2.2 in |
Naka-satsunai has a seasonal temperature swing of 53°F / from 15°F in January to 68°F in August. Total annual precipitation is 43.7 inches, with September being the wettest month (6.3") and February the driest (1.6").