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Weather & Climate in Gwanin, South Korea
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Gwanin experiences four distinct seasons with an average annual temperature of 51°F (10°C). Winters average 25°F in January while summers reach 74°F in July. The area gets 275 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 57.5 inches (wetter than the 38-inch national average). The area receives 9.3 inches of snow annually. The city sits at an elevation of 597 feet.
Temperature
25°F Jan (-4°C)
74°F Jul (23°C)
| Annual Average | 50.6°F |
| 6% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 597 ft (182 m) |
| Area | 501.7 sq mi (1,299.5 km²) |
| Population Density | 0/sq mi |
| Coordinates | 38.1592°N, 127.2494°W |
| Timezone | Asia/Seoul |
Precipitation & Snow
Air Quality
Earthquake History
3 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Jan 20, 2007 | 25 km NNE of Pyeongchang, South Korea | M4.7 | 125 km | 10 km |
| May 11, 2020 | 32 km E of Koksan, North Korea | M3.8 | 68 km | 10 km |
| Jan 8, 2023 | South Korea | M3.6 | 100 km | 17 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
8 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2020 | Bavi | Category 2 | 81 mph | 214 km |
| 2020 | Maysak | Category 1 | 86 mph | 216 km |
| 2020 | Haishen | Category 1 | 81 mph | 208 km |
| 2019 | Lingling | Category 1 | 75 mph | 182 km |
| 2010 | Kompasu | Category 1 | 69 mph | 8 km |
| 2003 | Maemi | Category 2 | 69 mph | 259 km |
| 2000 | Prapiroon | Category 1 | 69 mph | 212 km |
| 1995 | Faye | Category 1 | 58 mph | 198 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
1 volcano within 200 km. Closest: Ch'uga-ryong (20 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Ch'uga-ryong | Shield | 452 m (1,483 ft) | Unknown | 20 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 0.7 in | Coldest, Driest |
| February | 28°F (-2°C) | 0.9 in | |
| March | 38°F (3°C) | 1.6 in | |
| April | 51°F (11°C) | 2.9 in | |
| May | 61°F (16°C) | 3.7 in | |
| June | 69°F (20°C) | 5.1 in | |
| July | 74°F (23°C) | 13.1 in | Wettest |
| August | 75°F (24°C) | 11.8 in | Warmest |
| September | 66°F (19°C) | 5.8 in | |
| October | 54°F (12°C) | 1.9 in | |
| November | 41°F (5°C) | 1.8 in | |
| December | 29°F (-2°C) | 0.9 in |
Gwanin has a seasonal temperature swing of 50°F / from 25°F in January to 75°F in August. Total annual precipitation is 50.2 inches, with July being the wettest month (13.1") and January the driest (0.7").