Haean, South Korea

Full City Profile

1,424 ft Elevation 434 meters

51°F Avg Temperature 10°C

Haean experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 21°F in January while summers reach 73°F in July. The area gets 278 sunny days per year. Annual precipitation totals 48.4 inches. The area receives 32.0 inches of snow annually.

Temperature

21°F Jan (-6°C) 73°F Jul (23°C)

Annual Average	50.5°F
	6% below US avg
January Average	21°F (-6°C)
July Average	73°F (23°C)
Sunny Days	278 days/yr

Geography

Elevation	1,424 ft (434 m)
Area	270.6 sq mi (700.8 km²)
Population Density	0/sq mi
Coordinates	38.2863°N, 128.1377°W
Timezone	Asia/Seoul

Precipitation & Snow

Annual Rainfall 48.4"

27% above US avg

Snowfall 32.0"

Wettest Month (Jul) 11.20"

Driest Month (Jan) 1.00"

Air Quality

Earthquake History

5 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.8. Most recent: M3.9 on May 14, 2023.

Dec 13, 1996	20 km W of T’aebaek, South Korea	M4.8	139 km
Jan 20, 2007	25 km NNE of Pyeongchang, South Korea	M4.7	83 km
Apr 19, 2019	50 km NE of Tonghae, South Korea	M4.4	130 km
May 14, 2023	45 km NE of Tonghae, South Korea	M3.9	127 km
May 11, 2020	32 km E of Koksan, North Korea	M3.8	109 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

9 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 2.

Year	Name	Category	Closest
2022	Hinnamnor	Category 1	296 km
2020	Bavi	Category 1	292 km
2020	Maysak	Category 1	167 km
2020	Haishen	Category 1	166 km
2019	Lingling	Category 1	261 km
2010	Kompasu	Category 1	85 km
2003	Maemi	Category 2	205 km
2000	Prapiroon	Category 1	289 km
1995	Faye	Category 1	173 km

Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Nearby Volcanoes

1 volcano within 200 km. Closest: Ch'uga-ryong (71 km).

Name	Type	Elevation	Last Eruption	Distance
Ch'uga-ryong	Shield	452 m (1,483 ft)	Unknown	71 km

Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	21°F (-6°C)	1.0 in	Coldest, Driest
February	29°F (-2°C)	1.2 in
March	38°F (3°C)	1.6 in
April	51°F (10°C)	2.8 in
May	60°F (15°C)	3.5 in
June	67°F (19°C)	4.8 in
July	73°F (23°C)	11.2 in	Wettest
August	73°F (23°C)	10.8 in	Warmest
September	65°F (18°C)	6.6 in
October	54°F (12°C)	2.2 in
November	42°F (5°C)	2.0 in
December	31°F (-1°C)	1.1 in

Haean has a seasonal temperature swing of 53°F / from 21°F in January to 73°F in August. Total annual precipitation is 48.8 inches, with July being the wettest month (11.2") and January the driest (1.0").

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