All Countries
Weather & Climate in Jumunjin, South Korea
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Jumunjin experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 30°F in January while summers reach 73°F in July. The area gets 242 sunny days per year, above the national average. Annual precipitation totals 51.7 inches (wetter than the 38-inch national average). The area receives 5.2 inches of snow annually. The city sits at an elevation of 30 feet.
Temperature
30°F Jan (-1°C)
73°F Jul (23°C)
| Annual Average | 52.3°F |
| 3% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 242 days/yr |
Geography
| Elevation | 30 ft (9 m) |
| Area | 35.8 sq mi (92.6 km²) |
| Population Density | 576/sq mi |
| Coordinates | 37.8914°N, 128.8258°W |
| Timezone | Asia/Seoul |
Precipitation & Snow
Air Quality
Earthquake History
6 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Dec 13, 1996 | 20 km W of T’aebaek, South Korea | M4.8 | 84 km | 10 km |
| Jan 20, 2007 | 25 km NNE of Pyeongchang, South Korea | M4.7 | 45 km | 10 km |
| Apr 19, 2019 | 50 km NE of Tonghae, South Korea | M4.4 | 61 km | 10 km |
| Jan 23, 1996 | 40 km ENE of Santyoku, South Korea | M4.3 | 78 km | 57 km |
| Oct 6, 1995 | 45 km ESE of Santyoku, South Korea | M4.3 | 98 km | 33 km |
| May 14, 2023 | 45 km NE of Tonghae, South Korea | M3.9 | 57 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
10 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2022 | Hinnamnor | Category 1 | 81 mph | 223 km |
| 2020 | Maysak | Category 1 | 86 mph | 97 km |
| 2020 | Haishen | Category 1 | 81 mph | 102 km |
| 2010 | Kompasu | Category 1 | 58 mph | 144 km |
| 2003 | Maemi | Category 2 | 69 mph | 131 km |
| 1995 | Faye | Category 2 | 69 mph | 122 km |
| 1993 | Robyn | Category 1 | 81 mph | 273 km |
| 1991 | Caitlin | Category 1 | 75 mph | 248 km |
| 1987 | Dinah | Category 1 | 86 mph | 240 km |
| 1985 | Pat | Category 1 | 69 mph | 276 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Ch'uga-ryong (140 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Ch'uga-ryong | Shield | 452 m (1,483 ft) | Unknown | 140 km |
| Ulreung | Stratovolcano | 984 m (3,228 ft) | -2990 | 185 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 1.8 in | Coldest |
| February | 32°F (0°C) | 1.9 in | |
| March | 40°F (4°C) | 2.3 in | |
| April | 52°F (11°C) | 3.0 in | |
| May | 60°F (16°C) | 3.3 in | |
| June | 66°F (19°C) | 4.7 in | |
| July | 73°F (23°C) | 8.9 in | |
| August | 74°F (23°C) | 10.9 in | Warmest, Wettest |
| September | 66°F (19°C) | 7.6 in | |
| October | 56°F (14°C) | 3.2 in | |
| November | 45°F (7°C) | 2.6 in | |
| December | 35°F (2°C) | 1.5 in | Driest |
Jumunjin has a seasonal temperature swing of 44°F / from 30°F in January to 74°F in August. Total annual precipitation is 51.8 inches, with August being the wettest month (10.9") and December the driest (1.5").