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Haimen, China

Full City Profile

30 ft Elevation 9 meters
63°F Avg Temperature 17°C
Haimen enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 47°F in January while summers reach 81°F in July. The area gets 266 sunny days per year. Annual precipitation totals 62.0 inches. The area receives 0.0 inches of snow annually.

Temperature

47°F Jan (8°C) 81°F Jul (27°C)
Annual Average62.6°F
16% above US avg
January Average47°F (8°C)
July Average81°F (27°C)
Sunny Days266 days/yr

Geography

Elevation30 ft (9 m)
Area3,875.7 sq mi (10,038.0 km²)
Population Density0/sq mi
Coordinates28.6807°N, 121.4241°W
TimezoneAsia/Shanghai

Precipitation & Snow

Annual Rainfall 62.0"
63% above US avg
Snowfall 0.0"
Wettest Month (Jun) 8.20"
Driest Month (Dec) 1.70"

Air Quality

Earthquake History

1 earthquake (M2.5+) within 150 km since 1990. Strongest: M4.3. Most recent: M4.3 on Feb 8, 2006.

Feb 8, 2006 26 km WNW of Kunyang, China M4.3 150 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

38 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 5. Most recent: Bebinca (2024).

Year Name Category Closest
2024 Bebinca Category 1 247 km
2022 Muifa Category 2 125 km
2021 Chanthu Category 2 188 km
2021 In-fa Category 1 246 km
2020 Hagupit Category 1 114 km
2019 Lekima Category 4 32 km
2019 Mitag Category 2 76 km
2018 Maria Category 2 267 km
2016 Malakas Category 2 286 km
2015 Chan-hom Category 4 124 km
2013 Fitow Category 1 192 km
2012 Haikui Category 1 89 km
2007 Wipha Category 4 186 km
2006 Saomai Category 5 188 km
2005 Khanun Category 4 14 km
2005 Matsa Category 2 78 km
2004 Rananim Category 2 54 km
2004 Nock-ten Category 1 240 km
2002 Rammasun Category 3 262 km
2002 Sinlaku Category 2 165 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 47°F (8°C) 2.0 in
February 45°F (7°C) 2.9 in Coldest
March 50°F (10°C) 4.5 in
April 60°F (15°C) 5.2 in
May 68°F (20°C) 6.8 in
June 75°F (24°C) 8.2 in Wettest
July 81°F (27°C) 4.8 in Warmest
August 81°F (27°C) 7.4 in
September 76°F (24°C) 7.1 in
October 67°F (20°C) 3.5 in
November 58°F (14°C) 2.9 in
December 48°F (9°C) 1.7 in Driest

Haimen has a seasonal temperature swing of 37°F / from 45°F in February to 81°F in July. Total annual precipitation is 57.0 inches, with June being the wettest month (8.2") and December the driest (1.7").

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