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Haimen, China

Full City Profile

33 ft Elevation 10 meters
60°F Avg Temperature 15°C
Haimen enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 40°F in January while summers reach 81°F in July. The area gets 256 sunny days per year. Annual precipitation totals 52.8 inches. The area receives 1.5 inches of snow annually.

Temperature

40°F Jan (4°C) 81°F Jul (27°C)
Annual Average59.7°F
11% above US avg
January Average40°F (4°C)
July Average81°F (27°C)
Sunny Days256 days/yr

Geography

Elevation33 ft (10 m)
Area33.1 sq mi (85.7 km²)
Population Density0/sq mi
Coordinates31.8962°N, 121.1727°W
TimezoneAsia/Shanghai

Precipitation & Snow

Annual Rainfall 52.8"
39% above US avg
Snowfall 1.5"
Wettest Month (Jul) 6.50"
Driest Month (Dec) 1.30"

Air Quality

Earthquake History

4 earthquakes (M2.5+) within 150 km since 1990. Strongest: M5.0. Most recent: M4.5 on Jul 19, 2010.

Feb 9, 1990 27 km E of Changshu City, China M5.0 28 km
Jul 19, 2010 50 km ENE of Juegang, China M4.5 85 km
May 20, 1995 51 km NE of Juegang, China M4.1 89 km
Aug 30, 1998 58 km NE of Juegang, China M3.9 99 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

16 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 2. Most recent: Bebinca (2024).

Year Name Category Closest
2024 Bebinca Category 1 78 km
2022 Muifa Category 1 92 km
2021 Chanthu Category 1 225 km
2019 Lekima Category 1 272 km
2015 Chan-hom Category 1 227 km
2012 Damrey Category 1 232 km
2005 Khanun Category 1 176 km
2002 Rammasun Category 2 249 km
2000 Jelawat Category 1 295 km
2000 Prapiroon Category 1 206 km
1994 Doug Category 1 236 km
1994 Ellie Category 1 154 km
1990 Abe Category 1 162 km
1985 Mamie Category 1 40 km
1984 Ed Category 1 97 km
1981 Agnes Category 2 206 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 40°F (4°C) 1.4 in Coldest
February 40°F (4°C) 1.9 in
March 47°F (8°C) 2.6 in
April 57°F (14°C) 3.3 in
May 66°F (19°C) 3.9 in
June 74°F (23°C) 6.3 in
July 81°F (27°C) 6.5 in Warmest, Wettest
August 81°F (27°C) 4.9 in
September 73°F (23°C) 4.8 in
October 64°F (18°C) 2.1 in
November 53°F (12°C) 2.0 in
December 42°F (6°C) 1.3 in Driest

Haimen has a seasonal temperature swing of 41°F / from 40°F in January to 81°F in July. Total annual precipitation is 41.0 inches, with July being the wettest month (6.5") and December the driest (1.3").

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