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Weather & Climate in Jangan, South Korea
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Jangan enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 31°F in January while summers reach 75°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 70.4 inches (wetter than the 38-inch national average). The area receives 2.6 inches of snow annually. The city sits at an elevation of 59 feet.
Temperature
31°F Jan (-0°C)
75°F Jul (24°C)
| Annual Average | 55.8°F |
| 3% above US avg | |
| January Average | 31°F (-0°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 59 ft (18 m) |
| Area | 21.7 sq mi (56.2 km²) |
| Population Density | 0/sq mi |
| Coordinates | 35.3130°N, 129.2424°W |
| Timezone | Asia/Seoul |
Precipitation & Snow
Air Quality
Earthquake History
14 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| Sep 12, 2016 | 6km S of Gyeongju, South Korea | M5.4 | 52 km | 13 km |
| Sep 12, 2016 | 14km SW of Gyeongju, South Korea | M4.9 | 49 km | 10 km |
| Jun 25, 1997 | 3 km SW of Gyeongju, South Korea | M4.7 | 57 km | 10 km |
| Feb 10, 2018 | 5 km SW of Heunghae, South Korea | M4.7 | 85 km | 5 km |
| Jul 5, 2016 | 52 km E of Ulsan, South Korea | M4.7 | 65 km | 10 km |
| Sep 19, 2016 | 10 km SSW of Gyeongju, South Korea | M4.6 | 50 km | 9 km |
| Jun 29, 2005 | 80 km SE of Kyosai, South Korea | M4.5 | 107 km | 15 km |
| Nov 9, 1995 | 79 km ENE of Heunghae, South Korea | M4.5 | 143 km | 33 km |
| Dec 13, 1992 | 66 km E of Ulsan, South Korea | M4.4 | 77 km | 27 km |
| May 13, 2006 | 84 km NNW of Hirado, Japan | M4.3 | 141 km | 20 km |
| Feb 25, 1996 | 76 km N of Hirado, Japan | M4.0 | 142 km | 33 km |
| Oct 7, 1995 | 75 km E of Ulsan, South Korea | M4.0 | 88 km | 54 km |
| Dec 9, 2000 | 60 km NE of Heunghae, South Korea | M3.8 | 137 km | 33 km |
| Sep 21, 2016 | 9km SSE of Gyeongju, South Korea | M3.5 | 49 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
39 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 | 13 km |
| 2022 | Nanmadol | Category 1 | 81 mph | 228 km |
| 2020 | Haishen | Category 2 | 98 mph | 21 km |
| 2020 | Maysak | Category 1 | 92 mph | 37 km |
| 2019 | Francisco | Category 1 | 52 mph | 296 km |
| 2018 | Prapiroon | Category 1 | 69 mph | 168 km |
| 2016 | Chaba | Category 2 | 81 mph | 146 km |
| 2015 | Goni | Category 3 | 92 mph | 155 km |
| 2013 | Danas | Category 1 | 75 mph | 192 km |
| 2012 | Sanba | Category 2 | 98 mph | 98 km |
| 2007 | Nari | Category 1 | 86 mph | 191 km |
| 2007 | Usagi | Category 1 | 69 mph | 217 km |
| 2006 | Shanshan | Category 1 | 92 mph | 180 km |
| 2005 | Nabi | Category 1 | 75 mph | 181 km |
| 2004 | Songda | Category 2 | 86 mph | 209 km |
| 2004 | Chaba | Category 2 | 81 mph | 260 km |
| 2004 | Megi | Category 1 | 75 mph | 280 km |
| 2003 | Maemi | Category 3 | 104 mph | 69 km |
| 2003 | Soudelor | Category 1 | 69 mph | 62 km |
| 2002 | Rusa | Category 1 | 81 mph | 209 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1643 | SEA OF JAPAN | Earthquake | — | — | 31 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-0°C) | 1.3 in | Coldest |
| February | 37°F (3°C) | 1.7 in | |
| March | 44°F (7°C) | 2.8 in | |
| April | 54°F (12°C) | 4.5 in | |
| May | 62°F (17°C) | 4.6 in | |
| June | 68°F (20°C) | 7.6 in | |
| July | 75°F (24°C) | 9.6 in | Wettest |
| August | 77°F (25°C) | 8.7 in | Warmest |
| September | 69°F (21°C) | 6.2 in | |
| October | 60°F (15°C) | 2.3 in | |
| November | 49°F (9°C) | 2.0 in | |
| December | 39°F (4°C) | 0.9 in | Driest |
Jangan has a seasonal temperature swing of 46°F / from 31°F in January to 77°F in August. Total annual precipitation is 52.2 inches, with July being the wettest month (9.6") and December the driest (0.9").