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Weather & Climate in Changsu, South Korea
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Changsu experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 26°F in January while summers reach 72°F in July. The area gets 234 sunny days per year, above the national average. Annual precipitation totals 56.0 inches (wetter than the 38-inch national average). The area receives 4.1 inches of snow annually. The city sits at an elevation of 1,348 feet.
Temperature
26°F Jan (-4°C)
72°F Jul (22°C)
| Annual Average | 50.1°F |
| 7% below US avg | |
| January Average | 26°F (-4°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 234 days/yr |
Geography
| Elevation | 1,348 ft (411 m) |
| Area | 206.0 sq mi (533.6 km²) |
| Population Density | 128/sq mi |
| Coordinates | 35.6484°N, 127.5152°W |
| Timezone | Asia/Seoul |
Precipitation & Snow
Air Quality
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.9.
| Sep 12, 2016 | 14km SW of Gyeongju, South Korea | M4.9 | 144 km | 10 km |
| Sep 19, 2016 | 10 km SSW of Gyeongju, South Korea | M4.6 | 149 km | 9 km |
| Jun 11, 2024 | 3 km NW of Puan, South Korea | M4.4 | 74 km | 10 km |
| Jan 29, 2020 | 21 km WNW of Mungyeong, South Korea | M3.5 | 123 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
29 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 | 161 km |
| 2020 | Haishen | Category 2 | 98 mph | 153 km |
| 2020 | Bavi | Category 2 | 98 mph | 266 km |
| 2020 | Maysak | Category 1 | 92 mph | 126 km |
| 2019 | Lingling | Category 2 | 81 mph | 245 km |
| 2018 | Prapiroon | Category 1 | 69 mph | 257 km |
| 2016 | Chaba | Category 1 | 81 mph | 149 km |
| 2013 | Danas | Category 1 | 69 mph | 235 km |
| 2012 | Sanba | Category 2 | 98 mph | 87 km |
| 2010 | Kompasu | Category 3 | 81 mph | 208 km |
| 2007 | Nari | Category 1 | 86 mph | 128 km |
| 2004 | Megi | Category 1 | 75 mph | 285 km |
| 2003 | Maemi | Category 3 | 92 mph | 110 km |
| 2003 | Soudelor | Category 1 | 69 mph | 220 km |
| 2002 | Rusa | Category 1 | 81 mph | 161 km |
| 2000 | Saomai | Category 1 | 69 mph | 191 km |
| 2000 | Prapiroon | Category 1 | 69 mph | 281 km |
| 1999 | Olga | Category 1 | 69 mph | 146 km |
| 1995 | Faye | Category 3 | 81 mph | 67 km |
| 1994 | Seth | Category 1 | 58 mph | 219 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 | — | — | 132 km |
| 1649 | YELLOW SEA | Earthquake | — | — | 138 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-4°C) | 1.2 in | Coldest |
| February | 29°F (-2°C) | 1.7 in | |
| March | 38°F (3°C) | 2.5 in | |
| April | 50°F (10°C) | 4.4 in | |
| May | 59°F (15°C) | 4.1 in | |
| June | 66°F (19°C) | 7.6 in | |
| July | 72°F (22°C) | 12.8 in | Wettest |
| August | 73°F (23°C) | 10.5 in | Warmest |
| September | 64°F (18°C) | 6.0 in | |
| October | 53°F (12°C) | 2.2 in | |
| November | 41°F (5°C) | 1.8 in | |
| December | 30°F (-1°C) | 1.2 in | Driest |
Changsu has a seasonal temperature swing of 47°F / from 26°F in January to 73°F in August. Total annual precipitation is 56.0 inches, with July being the wettest month (12.8") and December the driest (1.2").