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Weather & Climate in Tomoura, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tomoura enjoys a temperate climate with an average annual temperature of 62°F (16°C). Winters average 44°F in January while summers reach 78°F in July. The area gets 195 sunny days per year. Annual precipitation totals 77.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 20 feet.
Temperature
44°F Jan (7°C)
78°F Jul (26°C)
| Annual Average | 61.5°F |
| 14% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 195 days/yr |
Geography
| Elevation | 20 ft (6 m) |
| Area | 441.5 sq mi (1,143.5 km²) |
| Population Density | 19/sq mi |
| Coordinates | 33.5904°N, 134.3596°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
165 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.9.
| Jan 16, 1995 | 8 km S of Akashi, Japan | M6.9 | 126 km | 22 km |
| Apr 12, 2013 | 6 km WNW of Sumoto, Japan | M5.8 | 97 km | 14 km |
| Aug 20, 1999 | 22 km SE of Kainan, Japan | M5.7 | 108 km | 66 km |
| Mar 13, 2019 | 22 km ESE of Anan, Japan | M5.2 | 52 km | 37 km |
| Apr 26, 2007 | 15 km ESE of Niihama, Japan | M5.1 | 91 km | 50 km |
| Oct 20, 1991 | 45 km SSW of Tanabe, Japan | M5.1 | 87 km | 41 km |
| Apr 14, 2000 | 10 km SSW of Tanabe, Japan | M5.1 | 88 km | 35 km |
| Jan 16, 1995 | 20 km SW of Akashi, Japan | M5.0 | 115 km | 10 km |
| Jul 5, 2011 | 12 km NNW of Gob?, Japan | M5.0 | 84 km | 16 km |
| Oct 13, 1995 | 10 km ESE of Akashi, Japan | M4.9 | 133 km | 18 km |
| Jul 20, 2010 | 8 km WSW of Hashimoto, Japan | M4.9 | 133 km | 66 km |
| Aug 22, 1994 | 39 km S of Anan, Japan | M4.9 | 22 km | 38 km |
| Jun 16, 2022 | 5 km S of Komatsushimach?, Japan | M4.9 | 45 km | 40 km |
| Feb 21, 2011 | 12 km NNW of Tanabe, Japan | M4.9 | 94 km | 55 km |
| Jan 16, 1995 | 8 km S of Izumisano, Japan | M4.8 | 121 km | 10 km |
| Oct 4, 2011 | 14 km SW of Wakimachi, Japan | M4.8 | 51 km | 43 km |
| Feb 18, 2014 | 7 km WNW of Shing?, Japan | M4.8 | 145 km | 42 km |
| May 26, 2005 | 6 km SSW of Kan’onjich?, Japan | M4.8 | 86 km | 38 km |
| Jun 9, 2020 | 15 km SE of Susaki, Japan | M4.8 | 95 km | 18 km |
| Jan 8, 2012 | 29 km SSW of K?ya, Japan | M4.8 | 112 km | 55 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
57 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Nakri | Category 1 | — | 290 km |
| 2023 | Lan | Category 2 | 81 mph | 125 km |
| 2019 | Francisco | Category 1 | 81 mph | 293 km |
| 2018 | Jebi | Category 3 | 98 mph | 32 km |
| 2018 | Trami | Category 1 | 98 mph | 44 km |
| 2018 | Cimaron | Category 1 | 92 mph | 25 km |
| 2018 | Jongdari | Category 1 | 75 mph | 272 km |
| 2017 | Lan | Category 3 | 109 mph | 246 km |
| 2017 | Noru | Category 1 | 69 mph | 13 km |
| 2016 | Malakas | Category 1 | 86 mph | 119 km |
| 2015 | Nangka | Category 1 | 86 mph | 66 km |
| 2014 | Phanfone | Category 2 | 92 mph | 117 km |
| 2014 | Halong | Category 1 | 86 mph | 118 km |
| 2012 | Jelawat | Category 1 | 92 mph | 121 km |
| 2011 | Roke | Category 4 | 98 mph | 159 km |
| 2011 | Ma-on | Category 1 | 86 mph | 11 km |
| 2009 | Melor | Category 1 | 92 mph | 152 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 101 km |
| 2007 | Usagi | Category 3 | 98 mph | 274 km |
| 2007 | Man-yi | Category 1 | 81 mph | 176 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
16 tsunamis recorded within 500 km. Highest wave on record: 28.0 m (92 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1854 | NANKAIDO | Earthquake | 28.0 m | 3,000 | 81 km |
| 1707 | NANKAIDO | Earthquake | 25.7 m | 5,000 | 60 km |
| 1605 | NANKAIDO | Earthquake | 10.0 m | 5,000 | 83 km |
| 684 | NANKAIDO | Earthquake | 3.0 m | — | 126 km |
| 1711 | SEIONAIKAI, JAPAN | Earthquake | 2.0 m | 1,000 | 86 km |
| 1510 | OSAKA BAY | Earthquake | 2.0 m | — | 148 km |
| 1808 | E. AWA, TOKUSHIMA PREFECTURE | Earthquake | 1.5 m | — | 53 km |
| 1948 | TOKAIDO | Earthquake | 0.6 m | — | 128 km |
| 1995 | KOBE, JAPAN | Earthquake | 0.3 m | 6,434 | 129 km |
| 1791 | OASAKA BAY | Earthquake | — | — | 139 km |
| 1498 | NANKAIDO | Earthquake | — | — | 79 km |
| 1361 | NANKAIDO | Earthquake | — | 660 | 89 km |
| 1331 | OFF TANABE, WAKAYAMA PREFECTURE | Earthquake | — | — | 79 km |
| 1099 | NANKAIDO | Earthquake | — | — | 125 km |
| 887 | NANKAIDO | Earthquake | — | — | 109 km |
| 745 | OSAKA BAY, JAPAN | Earthquake | — | — | 142 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 2.3 in | Coldest |
| February | 44°F (7°C) | 3.1 in | |
| March | 50°F (10°C) | 4.6 in | |
| April | 59°F (15°C) | 7.5 in | |
| May | 66°F (19°C) | 8.2 in | |
| June | 72°F (22°C) | 11.7 in | |
| July | 78°F (26°C) | 8.5 in | |
| August | 80°F (27°C) | 7.3 in | Warmest |
| September | 75°F (24°C) | 11.8 in | Wettest |
| October | 66°F (19°C) | 6.5 in | |
| November | 57°F (14°C) | 4.5 in | |
| December | 48°F (9°C) | 2.0 in | Driest |
Tomoura has a seasonal temperature swing of 36°F / from 44°F in January to 80°F in August. Total annual precipitation is 77.9 inches, with September being the wettest month (11.8") and December the driest (2.0").