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Weather & Climate in Honmachi, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Honmachi has a cool climate with an average annual temperature of 44°F (7°C). Winters average 21°F in January while summers reach 63°F in July. The area gets 266 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 38.7 inches. The area receives 8.9 inches of snow annually. The city sits at an elevation of 16 feet.
Temperature
21°F Jan (-6°C)
63°F Jul (17°C)
| Annual Average | 43.8°F |
| 19% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 266 days/yr |
Geography
| Elevation | 16 ft (5 m) |
| Area | 1,571.6 sq mi (4,070.4 km²) |
| Population Density | 8/sq mi |
| Coordinates | 43.9115°N, 144.6674°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
608 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 | 104 km | 102 km |
| Oct 8, 2003 | 39 km SSE of Kushiro, Japan | M6.7 | 141 km | 32 km |
| Jan 18, 2005 | 40 km E of Kushiro, Japan | M6.3 | 109 km | 42 km |
| Aug 31, 1994 | 36 km SSE of Yuzhno-Kurilsk, Russia | M6.2 | 110 km | 76 km |
| May 12, 1999 | 44 km W of Kushiro, Japan | M6.2 | 119 km | 103 km |
| Nov 15, 1997 | 19 km NNW of Shibetsu, Japan | M6.1 | 30 km | 161 km |
| Apr 11, 2004 | 38 km E of Kushiro, Japan | M6.1 | 111 km | 42 km |
| Jan 15, 1993 | 17 km W of Kushiro, Japan | M6.1 | 111 km | 112 km |
| Aug 24, 2002 | 50 km ESE of Nemuro, Japan | M6.1 | 147 km | 43 km |
| Nov 30, 1995 | 30 km NW of Otrada, Russia | M6.0 | 86 km | 137 km |
| Apr 26, 2001 | 37 km SE of Nemuro, Japan | M6.0 | 136 km | 86 km |
| Feb 25, 2023 | Hokkaido, Japan region | M6.0 | 124 km | 55 km |
| Jul 1, 2007 | 32 km W of Shibetsu, Japan | M5.8 | 28 km | 130 km |
| Apr 13, 2001 | 69 km SSW of Nemuro, Japan | M5.6 | 141 km | 33 km |
| Sep 28, 2003 | 48 km SE of Kushiro, Japan | M5.6 | 144 km | 33 km |
| Jan 30, 1990 | 36 km SSW of Nemuro, Japan | M5.5 | 119 km | 41 km |
| Sep 26, 2024 | 30 km SE of Akkeshi, Japan | M5.5 | 126 km | 50 km |
| Apr 24, 2018 | 12 km ENE of Nemuro, Japan | M5.5 | 106 km | 83 km |
| Mar 30, 2007 | 13 km ENE of Otrada, Russia | M5.5 | 110 km | 100 km |
| Mar 11, 2005 | 27 km ENE of Kushiro, Japan | M5.5 | 92 km | 54 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2000 | Sonamu | Category 1 | 58 mph | 251 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
5 tsunamis recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1973 | HOKKAIDO ISLAND | Earthquake | 6.0 m | — | 121 km |
| 1938 | E. HOKKAIDO ISLAND | Earthquake | 0.9 m | 1 | 46 km |
| 1956 | NE. HOKKAIDO ISLAND | Earthquake | 0.4 m | — | 63 km |
| 2004 | HOKKAIDO ISLAND | Earthquake | 0.1 m | — | 107 km |
| 1961 | SE. HOKKAIDO ISLAND | Earthquake | 0.1 m | — | 135 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
12 volcanoes within 200 km. Closest: Kussharo (38 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Kussharo | Caldera | 574 m (1,883 ft) | 1320 | 38 km |
| Mashu | Caldera | 857 m (2,812 ft) | 1080 | 39 km |
| Shiretoko-Iozan | Stratovolcano | 1,562 m (5,125 ft) | 1936 | 47 km |
| Tomariyama [Golovnin] | Caldera | 535 m (1,755 ft) | 1848 | 68 km |
| Akan | Caldera | 1,499 m (4,918 ft) | 2008 | 79 km |
| Raususan [Mendeleev] | Stratovolcano | 882 m (2,894 ft) | 1880 | 86 km |
| Ruruidake [Smirnov] | Stratovolcano | 1,486 m (4,875 ft) | Unknown | 132 km |
| Chachadake [Tiatia] | Stratovolcano | 1,822 m (5,978 ft) | 1981 | 136 km |
| Maruyama | Stratovolcano(es) | 2,013 m (6,604 ft) | 1898 | 143 km |
| Taisetsuzan | Stratovolcano(es) | 2,291 m (7,516 ft) | 1739 | 148 km |
| Tokachidake | Stratovolcano(es) | 2,077 m (6,814 ft) | 2004 | 169 km |
| Berutarubesan [Berutarube] | Stratovolcano | 1,221 m (4,006 ft) | Unknown | 191 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 21°F (-6°C) | 2.4 in | |
| February | 21°F (-6°C) | 1.7 in | Coldest, Driest |
| March | 28°F (-2°C) | 2.7 in | |
| April | 40°F (5°C) | 2.8 in | |
| May | 50°F (10°C) | 3.2 in | |
| June | 57°F (14°C) | 3.0 in | |
| July | 63°F (17°C) | 3.5 in | |
| August | 67°F (19°C) | 4.5 in | Warmest |
| September | 61°F (16°C) | 5.7 in | Wettest |
| October | 52°F (11°C) | 4.2 in | |
| November | 39°F (4°C) | 3.0 in | |
| December | 27°F (-3°C) | 2.1 in |
Honmachi has a seasonal temperature swing of 46°F / from 21°F in February to 67°F in August. Total annual precipitation is 38.7 inches, with September being the wettest month (5.7") and February the driest (1.7").