Weather & Climate in Mombetsu, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mombetsu has a cool climate with an average annual temperature of 42°F (6°C). Winters average 20°F in January while summers reach 62°F in July. Annual precipitation totals 33.7 inches. The area receives 7.6 inches of snow annually. The city sits at an elevation of 52 feet.
Temperature
20°F Jan (-7°C)
62°F Jul (17°C)
| Annual Average | 42.3°F |
| 22% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 62°F (17°C) |
Geography
| Elevation | 52 ft (16 m) |
| Area | 320.7 sq mi (830.7 km²) |
| Population Density | 67/sq mi |
| Coordinates | 44.3525°N, 143.3525°E |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
230 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 | 120 km | 102 km |
| Oct 21, 2011 | 16 km NE of Asahikawa, Japan | M6.1 | 87 km | 187 km |
| Nov 15, 1997 | 19 km NNW of Shibetsu, Japan | M6.1 | 146 km | 161 km |
| Feb 19, 2003 | 26 km NNE of Rumoi, Japan | M5.9 | 126 km | 214 km |
| Jul 1, 2007 | 32 km W of Shibetsu, Japan | M5.8 | 135 km | 130 km |
| Oct 25, 1991 | 36 km N of Kushiro, Japan | M5.5 | 142 km | 98 km |
| Dec 22, 1997 | 17 km ENE of Otofuke, Japan | M5.3 | 142 km | 115 km |
| Jun 20, 2021 | 29 km NE of Shimo-furano, Japan | M5.3 | 106 km | 152 km |
| Aug 15, 1990 | 43 km ESE of Kamikawa, Japan | M5.3 | 66 km | 162 km |
| Jan 8, 2015 | 21 km W of Shibetsu, Japan | M5.3 | 142 km | 132 km |
| Sep 15, 1995 | 48 km WNW of Kushiro, Japan | M5.2 | 148 km | 106 km |
| Aug 13, 2013 | 35 km WSW of Kitami, Japan | M5.1 | 71 km | 178 km |
| Apr 10, 2006 | 30 km W of Shibetsu, Japan | M5.1 | 134 km | 120 km |
| May 21, 2013 | 83 km ESE of Makubetsu, Japan | M5.1 | 96 km | 273 km |
| Aug 10, 2022 | 51 km SSE of Makubetsu, Japan | M5.1 | 120 km | 10 km |
| Feb 21, 1990 | 27 km SSW of Nayoro, Japan | M5.1 | 89 km | 33 km |
| Jul 5, 2024 | 10 km WNW of Nayoro, Japan | M5.1 | 82 km | 232 km |
| Nov 10, 1990 | 23 km W of Nayoro, Japan | M5.1 | 95 km | 16 km |
| Jul 20, 1993 | 33 km W of Nayoro, Japan | M5.0 | 104 km | 18 km |
| May 10, 2005 | 35 km E of Kamikawa, Japan | M5.0 | 65 km | 161 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 | 113 km |
| 1956 | NE. HOKKAIDO ISLAND | Earthquake | 0.4 m | - | 60 km |
| 1863 | NW. HOKKAIDO ISLAND | Earthquake | - | - | 150 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
9 volcanoes within 200 km. Closest: Taisetsuzan (86 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Taisetsuzan | Stratovolcano(es) | 2,291 m (7,516 ft) | 1739 | 86 km |
| Maruyama | Stratovolcano(es) | 2,013 m (6,604 ft) | 1898 | 107 km |
| Tokachidake | Stratovolcano(es) | 2,077 m (6,814 ft) | 2004 | 117 km |
| Kussharo | Caldera | 574 m (1,883 ft) | 1320 | 119 km |
| Akan | Caldera | 1,499 m (4,918 ft) | 2008 | 120 km |
| Mashu | Caldera | 857 m (2,812 ft) | 1080 | 130 km |
| Shiretoko-Iozan | Stratovolcano | 1,562 m (5,125 ft) | 1936 | 146 km |
| Tomariyama [Golovnin] | Caldera | 535 m (1,755 ft) | 1848 | 181 km |
| Raususan [Mendeleev] | Stratovolcano | 882 m (2,894 ft) | 1880 | 194 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 2.1 in | |
| February | 19°F (-7°C) | 1.4 in | Coldest, Driest |
| March | 27°F (-3°C) | 2.0 in | |
| April | 39°F (4°C) | 2.0 in | |
| May | 48°F (9°C) | 2.6 in | |
| June | 54°F (12°C) | 2.8 in | |
| July | 62°F (17°C) | 3.6 in | |
| August | 66°F (19°C) | 4.8 in | Warmest, Wettest |
| September | 60°F (16°C) | 4.7 in | |
| October | 49°F (10°C) | 3.3 in | |
| November | 37°F (3°C) | 2.4 in | |
| December | 26°F (-3°C) | 2.1 in |
Mombetsu has a seasonal temperature swing of 47°F / from 19°F in February to 66°F in August. Total annual precipitation is 33.7 inches, with August being the wettest month (4.8") and February the driest (1.4").