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Weather & Climate in Tamaru, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tamaru enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 40°F in January while summers reach 77°F in July. The area gets 189 sunny days per year. Annual precipitation totals 80.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 56 feet.
Temperature
40°F Jan (4°C)
77°F Jul (25°C)
| Annual Average | 58.5°F |
| 8% above US avg | |
| January Average | 40°F (4°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 189 days/yr |
Geography
| Elevation | 56 ft (17 m) |
| Area | 18.2 sq mi (47.1 km²) |
| Population Density | 827/sq mi |
| Coordinates | 34.4833°N, 136.6333°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
629 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.9.
| Sep 5, 2004 | 118 km ESE of Shing?, Japan | M7.4 | 150 km | 10 km |
| Jan 16, 1995 | 8 km S of Akashi, Japan | M6.9 | 148 km | 22 km |
| Sep 5, 2004 | 119 km ESE of Shing?, Japan | M6.5 | 149 km | 15 km |
| Jul 7, 1995 | 62 km SSE of Toba, Japan | M6.0 | 73 km | 333 km |
| Apr 1, 2016 | 54 km SE of Shing?, Japan | M5.9 | 125 km | 14 km |
| Feb 26, 2025 | 38 km ESE of Shingū, Japan | M5.8 | 101 km | 388 km |
| May 23, 1997 | 38 km SSE of Tahara, Japan | M5.8 | 79 km | 11 km |
| Jun 1, 1998 | 17 km SW of Owase, Japan | M5.8 | 78 km | 399 km |
| Aug 20, 1999 | 22 km SE of Kainan, Japan | M5.7 | 124 km | 66 km |
| Sep 5, 2004 | 93 km SE of Shing?, Japan | M5.7 | 138 km | 10 km |
| Nov 18, 2013 | 25 km SE of Toba, Japan | M5.6 | 42 km | 328 km |
| Oct 18, 1996 | 102 km SSE of Toba, Japan | M5.6 | 114 km | 338 km |
| Mar 16, 1997 | 5 km NE of Toyokawa, Japan | M5.6 | 85 km | 36 km |
| Sep 7, 2004 | 116 km ESE of Shing?, Japan | M5.6 | 145 km | 10 km |
| Jun 17, 2018 | near the south coast of western Honshu, Japan | M5.5 | 99 km | 10 km |
| Jan 18, 2003 | 67 km SSE of Toba, Japan | M5.5 | 79 km | 33 km |
| Aug 1, 2007 | 42 km ESE of Owase, Japan | M5.5 | 64 km | 371 km |
| Oct 30, 2000 | western Honshu, Japan | M5.5 | 44 km | 35 km |
| Apr 3, 2001 | 10 km NE of Mori, Japan | M5.4 | 135 km | 33 km |
| May 9, 2022 | 7 km NE of Toba, Japan | M5.3 | 25 km | 329 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
52 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Nakri | Category 1 | - | 294 km |
| 2023 | Lan | Category 2 | 81 mph | 122 km |
| 2019 | Faxai | Category 4 | 98 mph | 222 km |
| 2019 | Hagibis | Category 2 | 92 mph | 169 km |
| 2018 | Jebi | Category 3 | 98 mph | 147 km |
| 2018 | Trami | Category 1 | 92 mph | 129 km |
| 2018 | Cimaron | Category 1 | 92 mph | 178 km |
| 2018 | Jongdari | Category 1 | 81 mph | 43 km |
| 2017 | Lan | Category 2 | 104 mph | 131 km |
| 2017 | Noru | Category 1 | 69 mph | 151 km |
| 2016 | Mindulle | Category 1 | 75 mph | 264 km |
| 2015 | Nangka | Category 1 | 81 mph | 272 km |
| 2014 | Phanfone | Category 2 | 92 mph | 65 km |
| 2013 | Wipha | Category 1 | 81 mph | 274 km |
| 2012 | Jelawat | Category 1 | 92 mph | 264 km |
| 2011 | Roke | Category 3 | 98 mph | 67 km |
| 2011 | Ma-on | Category 1 | 86 mph | 212 km |
| 2010 | Chaba | Category 1 | 75 mph | 246 km |
| 2009 | Melor | Category 1 | 86 mph | 54 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 112 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
20 tsunamis recorded within 500 km. Highest wave on record: 21.0 m (69 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1854 | ENSHUNADA SEA | Earthquake | 21.0 m | 1,000 | 128 km |
| 1707 | ENSHUNADA | Earthquake | 11.0 m | 2,000 | 115 km |
| 1944 | OFF SOUTHEAST COAST KII PENINSULA | Earthquake | 10.0 m | 1,223 | 69 km |
| 1498 | ENSHUNADA SEA | Earthquake | 10.0 m | 5,000 | 145 km |
| 1096 | ENSHUNADA | Earthquake | 7.0 m | - | 96 km |
| 1855 | ENSHUNADA | Earthquake | 3.0 m | - | 89 km |
| 1520 | KII, KUMANANONADA | Earthquake | 2.0 m | - | 103 km |
| 1510 | OSAKA BAY | Earthquake | 2.0 m | - | 114 km |
| 1408 | KUMANONADA | Earthquake | 2.0 m | - | 80 km |
| 1403 | KUMANONADA | Earthquake | 2.0 m | - | 88 km |
| 922 | KUMANONADA | Earthquake | 2.0 m | - | 76 km |
| 1909 | ANEGAWA, JAPAN | Earthquake | 1.8 m | 41 | 106 km |
| 1945 | TOKAIDO | Earthquake | 1.0 m | 2,306 | 57 km |
| 2004 | SOUTH COAST HONSHU ISLAND | Earthquake | 0.9 m | - | 150 km |
| 1995 | KOBE, JAPAN | Earthquake | 0.3 m | 6,434 | 144 km |
| 1791 | OASAKA BAY | Earthquake | - | - | 113 km |
| 1708 | TOKAIDO | Earthquake | - | - | 63 km |
| 1666 | AICHI PREFECTURE | Earthquake | - | - | 59 km |
| 1589 | SURUGA, JAPAN | Earthquake | - | - | 148 km |
| 1586 | ISE BAY | Earthquake | - | 8,000 | 59 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Ontakesan (175 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Ontakesan | Complex | 3,067 m (10,062 ft) | 2014 | 175 km |
| Hakusan | Stratovolcano | 2,702 m (8,865 ft) | 1659 | 186 km |
| Norikuradake | Stratovolcano(es) | 3,026 m (9,928 ft) | -50 | 199 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 2.3 in | Coldest, Driest |
| February | 40°F (5°C) | 3.2 in | |
| March | 46°F (8°C) | 5.3 in | |
| April | 56°F (13°C) | 7.2 in | |
| May | 63°F (17°C) | 7.1 in | |
| June | 70°F (21°C) | 10.9 in | |
| July | 77°F (25°C) | 9.1 in | |
| August | 79°F (26°C) | 9.0 in | Warmest |
| September | 73°F (23°C) | 11.8 in | Wettest |
| October | 63°F (17°C) | 8.2 in | |
| November | 53°F (12°C) | 4.6 in | |
| December | 44°F (7°C) | 2.3 in |
Tamaru has a seasonal temperature swing of 39°F / from 40°F in January to 79°F in August. Total annual precipitation is 80.9 inches, with September being the wettest month (11.8") and January the driest (2.3").