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Weather & Climate in Yonakuni, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Yonakuni has a warm climate with an average annual temperature of 74°F (24°C). Winters average 65°F in January while summers reach 83°F in July / relatively mild seasonal variation. The area gets 165 sunny days per year, below the national average of 205. Annual precipitation totals 94.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 66 feet.
Temperature
65°F Jan (18°C)
83°F Jul (29°C)
| Annual Average | 74.3°F |
| 38% above US avg | |
| January Average | 65°F (18°C) |
| July Average | 83°F (29°C) |
| Sunny Days | 165 days/yr |
Geography
| Elevation | 66 ft (20 m) |
| Area | 1,125.0 sq mi (2,913.8 km²) |
| Population Density | 2/sq mi |
| Coordinates | 24.4667°N, 123.0000°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
2,798 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.
| Mar 31, 2002 | 67 km ENE of Hualien City, Taiwan | M7.1 | 86 km | 33 km |
| Dec 18, 2001 | 62 km SSW of Yonakuni, Japan | M6.8 | 63 km | 14 km |
| Aug 17, 2009 | 114 km SW of Ishigaki, Japan | M6.7 | 119 km | 20 km |
| May 24, 1994 | 79 km SW of Yonakuni, Japan | M6.6 | 80 km | 16 km |
| Feb 6, 2018 | 18 km NNE of Hualien City, Taiwan | M6.4 | 141 km | 17 km |
| Sep 28, 1992 | 52 km SW of Yonakuni, Japan | M6.4 | 52 km | 30 km |
| May 31, 2016 | Taiwan region | M6.4 | 130 km | 246 km |
| Jun 5, 1994 | 31 km SSE of Yilan, Taiwan | M6.4 | 111 km | 11 km |
| Apr 20, 2015 | 75 km WSW of Yonakuni, Japan | M6.4 | 75 km | 29 km |
| Apr 3, 2024 | 15 km NNE of Hualien City, Taiwan | M6.4 | 140 km | 14 km |
| Jul 13, 2009 | 61 km E of Hualien City, Taiwan | M6.3 | 93 km | 17 km |
| Mar 5, 1996 | 63 km ENE of Hualien City, Taiwan | M6.3 | 90 km | 30 km |
| Feb 7, 2010 | 109 km SSW of Ishigaki, Japan | M6.3 | 126 km | 21 km |
| Feb 23, 1995 | 17 km N of Hualien City, Taiwan | M6.2 | 145 km | 41 km |
| May 23, 1994 | 57 km SW of Yonakuni, Japan | M6.2 | 58 km | 20 km |
| Jan 3, 2022 | 66 km E of Hualien City, Taiwan | M6.2 | 91 km | 19 km |
| May 9, 2022 | 70 km SW of Yonakuni, Japan | M6.2 | 70 km | 21 km |
| May 15, 2002 | 21 km SE of Yilan, Taiwan | M6.2 | 111 km | 10 km |
| Apr 20, 2015 | 72 km SW of Yonakuni, Japan | M6.1 | 73 km | 29 km |
| May 28, 2002 | 67 km E of Hualien City, Taiwan | M6.1 | 87 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
110 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Podul | Category 2 | — | 276 km |
| 2025 | Danas | Category 1 | — | 264 km |
| 2024 | Gaemi | Category 4 | 104 mph | 59 km |
| 2024 | Kong-rey | Category 3 | 98 mph | 230 km |
| 2023 | Koinu | Category 4 | 104 mph | 252 km |
| 2023 | Khanun | Category 3 | 104 mph | 276 km |
| 2023 | Haikui | Category 3 | 98 mph | 209 km |
| 2022 | Hinnamnor | Category 5 | 115 mph | 174 km |
| 2022 | Muifa | Category 3 | 98 mph | 104 km |
| 2021 | Chanthu | Category 3 | 121 mph | 63 km |
| 2021 | In-fa | Category 2 | 98 mph | 204 km |
| 2020 | Hagupit | Category 1 | 81 mph | 115 km |
| 2019 | Lekima | Category 4 | 121 mph | 188 km |
| 2019 | Lingling | Category 4 | 109 mph | 233 km |
| 2019 | Mitag | Category 2 | 86 mph | 18 km |
| 2018 | Maria | Category 3 | 104 mph | 137 km |
| 2017 | Talim | Category 4 | 109 mph | 256 km |
| 2017 | Nesat | Category 2 | 92 mph | 80 km |
| 2016 | Nepartak | Category 5 | 127 mph | 265 km |
| 2016 | Malakas | Category 4 | 109 mph | 28 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 85.4 m (280 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1771 | RYUKYU ISLANDS | Earthquake | 85.4 m | 13,486 | 142 km |
| 1867 | E. CHINA SEA | Earthquake | 15.0 m | 580 | 147 km |
| 2002 | TAIWAN | Earthquake | 0.2 m | 5 | 86 km |
| 1963 | E. TAIWAN-RYUKYU ISLANDS | Earthquake | 0.2 m | 15 | 91 km |
| 2001 | TAIWAN | Earthquake | 0.2 m | — | 63 km |
| 1966 | E. TAIWAN-RYUKYU ISLANDS | Earthquake | 0.1 m | 7 | 58 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Tatun Volcanic Group (166 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Tatun Volcanic Group | Lava dome(s) | 1,120 m (3,675 ft) | 648 | 166 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 65°F (18°C) | 7.6 in | Coldest |
| February | 65°F (18°C) | 6.3 in | |
| March | 68°F (20°C) | 6.1 in | |
| April | 73°F (23°C) | 6.9 in | |
| May | 77°F (25°C) | 8.6 in | |
| June | 81°F (27°C) | 7.2 in | |
| July | 83°F (29°C) | 5.6 in | Warmest, Driest |
| August | 83°F (28°C) | 8.3 in | |
| September | 81°F (27°C) | 11.0 in | Wettest |
| October | 77°F (25°C) | 9.8 in | |
| November | 72°F (22°C) | 9.9 in | |
| December | 67°F (20°C) | 6.9 in |
Yonakuni has a seasonal temperature swing of 19°F / from 65°F in January to 83°F in July. Total annual precipitation is 94.2 inches, with September being the wettest month (11.0") and July the driest (5.6").