Weather & Climate in Yilan, Taiwan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Yilan has a warm climate with an average annual temperature of 71°F (22°C). Winters average 60°F in January while summers reach 82°F in July. Annual precipitation totals 119.5 inches (wetter than the 38-inch national average). The city sits at an elevation of 49 feet.
Temperature
60°F Jan (16°C)
82°F Jul (28°C)
| Annual Average | 71.3°F |
| 32% above US avg | |
| January Average | 60°F (16°C) |
| July Average | 82°F (28°C) |
Geography
| Elevation | 49 ft (15 m) |
| Area | 11.4 sq mi (29.4 km²) |
| Population Density | 8,309/sq mi |
| Coordinates | 24.7570°N, 121.7530°E |
| Timezone | Asia/Taipei |
Precipitation & Snow
Air Quality
Earthquake History
2,914 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.7.
| Sep 20, 1999 | 21 km S of Puli, Taiwan | M7.7 | 135 km | 33 km |
| Apr 2, 2024 | 15 km S of Hualien City, Taiwan | M7.4 | 104 km | 40 km |
| Mar 31, 2002 | 67 km ENE of Hualien City, Taiwan | M7.1 | 68 km | 33 km |
| Dec 18, 2001 | 62 km SSW of Yonakuni, Japan | M6.8 | 134 km | 14 km |
| Dec 13, 1990 | 28 km S of Hualien City, Taiwan | M6.7 | 116 km | 10 km |
| May 24, 1994 | 79 km SW of Yonakuni, Japan | M6.6 | 113 km | 16 km |
| Sep 25, 1999 | 31 km SE of Puli, Taiwan | M6.5 | 128 km | 17 km |
| Apr 3, 2024 | 15 km NNE of Hualien City, Taiwan | M6.4 | 73 km | 14 km |
| Feb 6, 2018 | 18 km NNE of Hualien City, Taiwan | M6.4 | 70 km | 17 km |
| Dec 19, 2009 | 20 km S of Hualien City, Taiwan | M6.4 | 108 km | 43 km |
| Jun 10, 2000 | 29 km ESE of Puli, Taiwan | M6.4 | 115 km | 33 km |
| Jun 5, 1994 | 31 km SSE of Yilan, Taiwan | M6.4 | 31 km | 11 km |
| Sep 22, 1999 | 33 km SE of Puli, Taiwan | M6.4 | 129 km | 26 km |
| May 31, 2016 | Taiwan region | M6.4 | 120 km | 246 km |
| Apr 20, 2015 | 75 km WSW of Yonakuni, Japan | M6.4 | 84 km | 29 km |
| Sep 28, 1992 | 52 km SW of Yonakuni, Japan | M6.4 | 115 km | 30 km |
| Sep 20, 1999 | 54 km SW of Hualien City, Taiwan | M6.3 | 140 km | 33 km |
| Oct 31, 2013 | 46 km SSW of Hualien City, Taiwan | M6.3 | 134 km | 10 km |
| Jul 13, 2009 | 61 km E of Hualien City, Taiwan | M6.3 | 90 km | 17 km |
| Dec 13, 1990 | 7 km SSE of Hualien City, Taiwan | M6.3 | 94 km | 12 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
97 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Podul | Category 2 | - | 238 km |
| 2025 | Danas | Category 2 | - | 166 km |
| 2024 | Gaemi | Category 4 | 104 mph | 36 km |
| 2024 | Kong-rey | Category 3 | 98 mph | 174 km |
| 2024 | Krathon | Category 2 | 75 mph | 277 km |
| 2023 | Haikui | Category 3 | 98 mph | 208 km |
| 2022 | Muifa | Category 3 | 98 mph | 227 km |
| 2022 | Hinnamnor | Category 3 | 104 mph | 290 km |
| 2021 | Chanthu | Category 3 | 115 mph | 68 km |
| 2020 | Hagupit | Category 1 | 81 mph | 150 km |
| 2019 | Lekima | Category 4 | 109 mph | 246 km |
| 2019 | Mitag | Category 2 | 86 mph | 117 km |
| 2018 | Maria | Category 2 | 98 mph | 159 km |
| 2017 | Nesat | Category 2 | 92 mph | 18 km |
| 2016 | Megi | Category 4 | 98 mph | 75 km |
| 2016 | Malakas | Category 4 | 109 mph | 116 km |
| 2016 | Nepartak | Category 4 | 104 mph | 248 km |
| 2015 | Dujuan | Category 4 | 127 mph | 71 km |
| 2015 | Goni | Category 4 | 115 mph | 207 km |
| 2015 | Soudelor | Category 3 | 104 mph | 84 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
10 tsunamis recorded within 500 km. Highest wave on record: 30.0 m (98 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1781 | KAOHSIUNG | Unknown | 30.0 m | 1 | 114 km |
| 1867 | E. CHINA SEA | Earthquake | 15.0 m | 580 | 67 km |
| 2024 | E. TAIWAN-RYUKYU ISLANDS | Earthquake | 1.0 m | 20 | 106 km |
| 1986 | TAIWAN | Earthquake | 0.3 m | 15 | 97 km |
| 1951 | TAIWAN | Earthquake | 0.3 m | 68 | 107 km |
| 2002 | TAIWAN | Earthquake | 0.2 m | 5 | 68 km |
| 1963 | E. TAIWAN-RYUKYU ISLANDS | Earthquake | 0.2 m | 15 | 53 km |
| 2001 | TAIWAN | Earthquake | 0.2 m | - | 134 km |
| 1966 | E. TAIWAN-RYUKYU ISLANDS | Earthquake | 0.1 m | 7 | 113 km |
| 1990 | TAIWAN | Earthquake | 0.0 m | - | 116 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Tatun Volcanic Group (51 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Tatun Volcanic Group | Lava dome(s) | 1,120 m (3,675 ft) | 648 | 51 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 60°F (16°C) | 6.4 in | Coldest, Driest |
| February | 61°F (16°C) | 7.4 in | |
| March | 64°F (18°C) | 7.8 in | |
| April | 70°F (21°C) | 6.8 in | |
| May | 75°F (24°C) | 10.8 in | |
| June | 79°F (26°C) | 12.4 in | |
| July | 82°F (28°C) | 10.9 in | Warmest |
| August | 82°F (28°C) | 13.4 in | |
| September | 79°F (26°C) | 15.4 in | Wettest |
| October | 74°F (23°C) | 13.4 in | |
| November | 68°F (20°C) | 8.2 in | |
| December | 63°F (17°C) | 6.6 in |
Yilan has a seasonal temperature swing of 22°F / from 60°F in January to 82°F in July. Total annual precipitation is 119.5 inches, with September being the wettest month (15.4") and January the driest (6.4").