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Weather & Climate in Hiromi, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Hiromi enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 44°F in January while summers reach 78°F in July. The area gets 174 sunny days per year. Annual precipitation totals 89.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 387 feet.
Temperature
44°F Jan (6°C)
78°F Jul (25°C)
| Annual Average | 61.2°F |
| 13% above US avg | |
| January Average | 44°F (6°C) |
| July Average | 78°F (25°C) |
| Sunny Days | 174 days/yr |
Geography
| Elevation | 387 ft (118 m) |
| Area | 218.0 sq mi (564.6 km²) |
| Population Density | 20/sq mi |
| Coordinates | 32.8333°N, 132.7167°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
290 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.8.
| Mar 24, 2001 | 16 km SSW of Kure, Japan | M6.8 | 140 km | 50 km |
| Mar 13, 2014 | 32 km SSW of Hikari, Japan | M6.3 | 126 km | 79 km |
| Apr 17, 2024 | 18 km W of Uwajima, Japan | M6.3 | 57 km | 32 km |
| Jan 21, 2022 | 27 km SSE of Saiki, Japan | M6.3 | 65 km | 39 km |
| May 9, 2019 | 43 km ESE of Miyazaki, Japan | M6.2 | 143 km | 22 km |
| Aug 28, 2014 | 53 km E of Takanabe, Japan | M5.8 | 103 km | 20 km |
| Apr 25, 2001 | 18 km SE of Saiki, Japan | M5.7 | 65 km | 33 km |
| Oct 19, 1996 | 19 km ENE of Miyazaki, Japan | M5.7 | 142 km | 33 km |
| May 9, 2019 | 46 km ESE of Miyazaki, Japan | M5.6 | 139 km | 22 km |
| May 22, 1998 | 9 km NE of Bungo-Takada-shi, Japan | M5.5 | 142 km | 81 km |
| Aug 16, 2025 | 32 km ESE of Takanabe, Japan | M5.5 | 125 km | 30 km |
| Oct 19, 1996 | 37 km ESE of Miyazaki, Japan | M5.5 | 140 km | 33 km |
| Mar 27, 2006 | 45 km SSE of Saiki, Japan | M5.5 | 58 km | 35 km |
| Jul 12, 2015 | 12 km SSW of Usuki, Japan | M5.5 | 93 km | 53 km |
| Apr 15, 2016 | 10 km NE of Aso, Japan | M5.5 | 147 km | 13 km |
| Nov 4, 2002 | Kyushu, Japan | M5.4 | 120 km | 33 km |
| Mar 2, 2017 | 39 km SSE of Saiki, Japan | M5.3 | 62 km | 44 km |
| Mar 27, 2019 | 57 km E of Takanabe, Japan | M5.3 | 95 km | 19 km |
| Mar 27, 2019 | 45 km E of Takanabe, Japan | M5.2 | 102 km | 17 km |
| Jan 13, 2025 | 24 km ESE of Takanabe, Japan | M5.2 | 131 km | 40 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
61 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Shanshan | Category 3 | 109 mph | 229 km |
| 2023 | Lan | Category 1 | 69 mph | 294 km |
| 2022 | Nanmadol | Category 3 | 104 mph | 215 km |
| 2020 | Chan-hom | Category 1 | 81 mph | 248 km |
| 2019 | Francisco | Category 1 | 81 mph | 138 km |
| 2018 | Jebi | Category 3 | 98 mph | 112 km |
| 2018 | Trami | Category 1 | 98 mph | 65 km |
| 2018 | Cimaron | Category 1 | 92 mph | 158 km |
| 2017 | Noru | Category 1 | 69 mph | 41 km |
| 2016 | Malakas | Category 3 | 92 mph | 73 km |
| 2015 | Goni | Category 3 | 104 mph | 217 km |
| 2015 | Nangka | Category 1 | 86 mph | 149 km |
| 2014 | Phanfone | Category 2 | 98 mph | 164 km |
| 2014 | Halong | Category 1 | 86 mph | 44 km |
| 2012 | Jelawat | Category 1 | 98 mph | 188 km |
| 2011 | Roke | Category 4 | 98 mph | 225 km |
| 2011 | Ma-on | Category 1 | 86 mph | 48 km |
| 2009 | Melor | Category 1 | 92 mph | 217 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 135 km |
| 2007 | Usagi | Category 3 | 104 mph | 111 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
18 tsunamis recorded within 500 km. Highest wave on record: 8.0 m (26 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1596 | BEPPU BAY, KYUSHU | Eruption + Earthquake | 8.0 m | 708 | 108 km |
| 1662 | HIUGANADA | Earthquake | 5.0 m | 200 | 143 km |
| 1968 | SEIKAIDO | Earthquake | 3.1 m | 1 | 63 km |
| 684 | NANKAIDO | Earthquake | 3.0 m | — | 126 km |
| 1769 | SW. KYUSHU ISLAND | Earthquake | 2.5 m | — | 90 km |
| 1941 | SEIKAIDO | Earthquake | 1.2 m | 2 | 109 km |
| 1939 | SEIKAIDO | Earthquake | 0.8 m | 1 | 90 km |
| 1931 | SEIKAIDO | Earthquake | 0.8 m | 1 | 91 km |
| 1929 | HYUGANADA SEA | Earthquake | 0.7 m | — | 135 km |
| 1970 | SEIKAIDO | Earthquake | 0.3 m | — | 119 km |
| 1899 | SEIKAIDO | Earthquake | 0.3 m | — | 124 km |
| 1984 | KYUSHU, JAPAN | Earthquake | 0.2 m | — | 88 km |
| 1969 | RYUKYU ISLANDS | Earthquake | 0.1 m | — | 91 km |
| 1987 | KYUSHU ISLAND | Earthquake | 0.0 m | 2 | 121 km |
| 1899 | SEIKAIDO | Earthquake | — | — | 42 km |
| 1715 | SEIKAIDO | Earthquake | — | — | 108 km |
| 1698 | SEIKAIDO-NANKAIDO | Earthquake | — | — | 108 km |
| 1597 | BEPPU BAY, JAPAN | Eruption + Earthquake | — | 40 | 116 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Yufu-Tsurumi (133 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Yufu-Tsurumi | Lava dome(s) | 1,584 m (5,197 ft) | 867 | 133 km |
| Kujusan | Stratovolcano(es) | 1,791 m (5,876 ft) | 1996 | 140 km |
| Asosan | Caldera | 1,592 m (5,223 ft) | 2020 | 151 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (6°C) | 2.5 in | Coldest, Driest |
| February | 45°F (7°C) | 3.9 in | |
| March | 50°F (10°C) | 6.1 in | |
| April | 59°F (15°C) | 8.8 in | |
| May | 65°F (19°C) | 10.0 in | |
| June | 71°F (22°C) | 12.7 in | Wettest |
| July | 78°F (25°C) | 12.1 in | |
| August | 79°F (26°C) | 6.5 in | Warmest |
| September | 75°F (24°C) | 12.2 in | |
| October | 66°F (19°C) | 7.6 in | |
| November | 57°F (14°C) | 4.1 in | |
| December | 48°F (9°C) | 2.8 in |
Hiromi has a seasonal temperature swing of 36°F / from 44°F in January to 79°F in August. Total annual precipitation is 89.2 inches, with June being the wettest month (12.7") and January the driest (2.5").