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Weather & Climate in Jeju City, South Korea
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Jeju City enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 41°F in January while summers reach 78°F in July. The area gets 211 sunny days per year. Annual precipitation totals 69.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 62 feet.
Temperature
41°F Jan (5°C)
78°F Jul (25°C)
| Annual Average | 59.2°F |
| 10% above US avg | |
| January Average | 41°F (5°C) |
| July Average | 78°F (25°C) |
| Sunny Days | 211 days/yr |
Geography
| Elevation | 62 ft (19 m) |
| Area | 377.5 sq mi (977.8 km²) |
| Population Density | 1,295/sq mi |
| Coordinates | 33.5097°N, 126.5219°W |
| Timezone | Asia/Seoul |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| May 31, 2008 | 108 km WNW of Gaigeturi, South Korea | M3.8 | 125 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
42 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2022 | Hinnamnor | Category 3 | 92 mph | 76 km |
| 2020 | Bavi | Category 3 | 98 mph | 206 km |
| 2020 | Haishen | Category 2 | 98 mph | 246 km |
| 2020 | Maysak | Category 2 | 98 mph | 133 km |
| 2019 | Lingling | Category 3 | 86 mph | 150 km |
| 2018 | Soulik | Category 2 | 92 mph | 105 km |
| 2018 | Kong-rey | Category 1 | 75 mph | 79 km |
| 2018 | Prapiroon | Category 1 | 75 mph | 210 km |
| 2016 | Chaba | Category 2 | 92 mph | 63 km |
| 2014 | Neoguri | Category 1 | 75 mph | 208 km |
| 2013 | Danas | Category 2 | 81 mph | 135 km |
| 2012 | Sanba | Category 3 | 98 mph | 136 km |
| 2012 | Bolaven | Category 1 | 75 mph | 135 km |
| 2012 | Damrey | Category 1 | 75 mph | 169 km |
| 2010 | Kompasu | Category 3 | 81 mph | 180 km |
| 2007 | Nari | Category 2 | 92 mph | 52 km |
| 2006 | Shanshan | Category 2 | 98 mph | 286 km |
| 2004 | Songda | Category 2 | 86 mph | 272 km |
| 2004 | Megi | Category 1 | 75 mph | 127 km |
| 2003 | Maemi | Category 4 | 104 mph | 105 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
1 volcano within 200 km. Closest: Halla (17 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Halla | Shield | 1,919 m (6,296 ft) | 1007 | 17 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 2.7 in | Coldest |
| February | 42°F (5°C) | 3.2 in | |
| March | 48°F (9°C) | 4.3 in | |
| April | 56°F (13°C) | 5.9 in | |
| May | 63°F (17°C) | 6.9 in | |
| June | 70°F (21°C) | 9.8 in | |
| July | 78°F (25°C) | 10.9 in | Wettest |
| August | 79°F (26°C) | 10.2 in | Warmest |
| September | 73°F (23°C) | 7.1 in | |
| October | 64°F (18°C) | 3.0 in | |
| November | 54°F (12°C) | 3.0 in | |
| December | 45°F (7°C) | 2.1 in | Driest |
Jeju City has a seasonal temperature swing of 39°F / from 41°F in January to 79°F in August. Total annual precipitation is 69.1 inches, with July being the wettest month (10.9") and December the driest (2.1").