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Weather & Climate in Wanju, South Korea
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Wanju enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 31°F in January while summers reach 78°F in July. The area gets 246 sunny days per year, above the national average. Annual precipitation totals 49.8 inches (wetter than the 38-inch national average). The area receives 4.1 inches of snow annually. The city sits at an elevation of 184 feet.
Temperature
31°F Jan (-1°C)
78°F Jul (26°C)
| Annual Average | 55.5°F |
| 3% above US avg | |
| January Average | 31°F (-1°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 184 ft (56 m) |
| Area | 317.0 sq mi (821.0 km²) |
| Population Density | 265/sq mi |
| Coordinates | 35.8451°N, 127.1475°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 | 41 km | 10 km |
| Jan 29, 2020 | 21 km WNW of Mungyeong, South Korea | M3.5 | 121 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
25 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 | 199 km |
| 2020 | Bavi | Category 2 | 98 mph | 230 km |
| 2020 | Haishen | Category 1 | 92 mph | 189 km |
| 2020 | Maysak | Category 1 | 92 mph | 163 km |
| 2019 | Lingling | Category 2 | 81 mph | 212 km |
| 2018 | Prapiroon | Category 1 | 69 mph | 295 km |
| 2016 | Chaba | Category 1 | 81 mph | 183 km |
| 2013 | Danas | Category 1 | 69 mph | 269 km |
| 2012 | Sanba | Category 2 | 86 mph | 126 km |
| 2010 | Kompasu | Category 3 | 81 mph | 169 km |
| 2007 | Nari | Category 1 | 81 mph | 151 km |
| 2003 | Maemi | Category 3 | 92 mph | 148 km |
| 2003 | Soudelor | Category 1 | 69 mph | 258 km |
| 2002 | Rusa | Category 1 | 81 mph | 184 km |
| 2000 | Saomai | Category 1 | 69 mph | 223 km |
| 2000 | Prapiroon | Category 1 | 81 mph | 243 km |
| 1999 | Olga | Category 1 | 69 mph | 126 km |
| 1995 | Faye | Category 3 | 81 mph | 105 km |
| 1994 | Seth | Category 1 | 58 mph | 231 km |
| 1991 | Caitlin | Category 1 | 86 mph | 247 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 | — | — | 93 km |
| 1649 | YELLOW SEA | Earthquake | — | — | 111 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 1.2 in | Coldest, Driest |
| February | 34°F (1°C) | 1.6 in | |
| March | 43°F (6°C) | 2.1 in | |
| April | 55°F (13°C) | 3.6 in | |
| May | 64°F (18°C) | 3.5 in | |
| June | 72°F (22°C) | 6.3 in | |
| July | 78°F (26°C) | 11.2 in | Wettest |
| August | 79°F (26°C) | 9.5 in | Warmest |
| September | 70°F (21°C) | 5.4 in | |
| October | 59°F (15°C) | 2.1 in | |
| November | 46°F (8°C) | 2.1 in | |
| December | 35°F (2°C) | 1.3 in |
Wanju has a seasonal temperature swing of 48°F / from 31°F in January to 79°F in August. Total annual precipitation is 49.8 inches, with July being the wettest month (11.2") and January the driest (1.2").