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Weather & Climate in Gunsan, South Korea
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Gunsan experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 31°F in January while summers reach 78°F in July. The area gets 250 sunny days per year, above the national average. Annual precipitation totals 47.5 inches (wetter than the 38-inch national average). The area receives 2.8 inches of snow annually. The city sits at an elevation of 46 feet.
Temperature
31°F Jan (-0°C)
78°F Jul (25°C)
| Annual Average | 55.2°F |
| 2% above US avg | |
| January Average | 31°F (-0°C) |
| July Average | 78°F (25°C) |
| Sunny Days | 250 days/yr |
Geography
| Elevation | 46 ft (14 m) |
| Area | 2,160.4 sq mi (5,595.5 km²) |
| Population Density | 123/sq mi |
| Coordinates | 35.9786°N, 126.7114°W |
| Timezone | Asia/Seoul |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.4.
| Jun 11, 2024 | 3 km NW of Puan, South Korea | M4.4 | 25 km | 10 km |
| Jan 29, 2020 | 21 km WNW of Mungyeong, South Korea | M3.5 | 139 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
22 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2022 | Hinnamnor | Category 2 | 86 mph | 235 km |
| 2020 | Bavi | Category 2 | 98 mph | 190 km |
| 2020 | Haishen | Category 1 | 92 mph | 231 km |
| 2020 | Maysak | Category 1 | 92 mph | 205 km |
| 2019 | Lingling | Category 2 | 81 mph | 175 km |
| 2016 | Chaba | Category 1 | 81 mph | 216 km |
| 2012 | Sanba | Category 2 | 86 mph | 166 km |
| 2010 | Kompasu | Category 3 | 81 mph | 127 km |
| 2007 | Nari | Category 1 | 81 mph | 176 km |
| 2003 | Maemi | Category 3 | 92 mph | 187 km |
| 2003 | Soudelor | Category 1 | 69 mph | 300 km |
| 2002 | Rusa | Category 1 | 81 mph | 208 km |
| 2000 | Saomai | Category 1 | 69 mph | 254 km |
| 2000 | Prapiroon | Category 1 | 81 mph | 202 km |
| 1999 | Olga | Category 1 | 69 mph | 108 km |
| 1995 | Faye | Category 3 | 81 mph | 143 km |
| 1994 | Seth | Category 1 | 58 mph | 242 km |
| 1991 | Caitlin | Category 1 | 86 mph | 286 km |
| 1987 | Dinah | Category 1 | 98 mph | 281 km |
| 1987 | Thelma | Category 1 | 86 mph | 203 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
2 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1700 | YELLOW SEA | Earthquake | — | — | 61 km |
| 1649 | YELLOW SEA | Earthquake | — | — | 83 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-0°C) | 1.3 in | Coldest, Driest |
| February | 34°F (1°C) | 1.5 in | |
| March | 42°F (6°C) | 2.0 in | |
| April | 53°F (12°C) | 3.4 in | |
| May | 63°F (17°C) | 3.5 in | |
| June | 71°F (22°C) | 5.8 in | |
| July | 78°F (25°C) | 10.1 in | Wettest |
| August | 79°F (26°C) | 9.1 in | Warmest |
| September | 70°F (21°C) | 5.2 in | |
| October | 59°F (15°C) | 2.1 in | |
| November | 47°F (8°C) | 2.2 in | |
| December | 36°F (2°C) | 1.4 in |
Gunsan has a seasonal temperature swing of 47°F / from 31°F in January to 79°F in August. Total annual precipitation is 47.5 inches, with July being the wettest month (10.1") and January the driest (1.3").