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La Unión, Mexico

Full City Profile

4,812 Population 3/sq mi density
33 ft Elevation 10 meters
76°F Avg Temperature 25°C
La Unión has a warm climate with an average annual temperature of 76°F (24°C). Winters average 59°F in January while summers reach 91°F in July. The area gets 351 sunny days per year. Annual precipitation totals 6.6 inches. The area receives 0.0 inches of snow annually.

Temperature

59°F Jan (15°C) 91°F Jul (33°C)
Annual Average76.4°F
41% above US avg
January Average59°F (15°C)
July Average91°F (33°C)
Sunny Days351 days/yr

Geography

Elevation33 ft (10 m)
Area1,525.5 sq mi (3,950.9 km²)
Population Density3/sq mi
Coordinates26.8202°N, 109.6083°W
TimezoneAmerica/Hermosillo

Precipitation & Snow

Annual Rainfall 6.6"
83% below US avg
Snowfall 0.0"
Wettest Month (Aug) 4.09"
Driest Month (Apr) 0.04"

Air Quality

Earthquake History

162 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.6. Most recent: M4.9 on Aug 17, 2025.

Aug 28, 1995 95 km SW of Etchoropo, Mexico M6.6 105 km
Oct 19, 2013 98 km SW of Etchoropo, Mexico M6.6 108 km
Mar 12, 2003 87 km SW of Paredón Colorado, Mexico M6.4 102 km
Jan 19, 2018 79 km NNE of Loreto, Mexico M6.3 147 km
Mar 13, 2007 85 km ENE of Loreto, Mexico M6.0 111 km
Feb 25, 2007 94 km E of Loreto, Mexico M5.9 110 km
Mar 29, 2017 71 km WSW of Las Grullas Margen Derecha, Mexico M5.7 130 km
Jan 13, 2013 76 km W of Las Grullas Margen Derecha, Mexico M5.7 115 km
Feb 22, 2005 66 km W of Campo Pesquero el Colorado, Mexico M5.6 133 km
Oct 1, 1996 70 km NE of Loreto, Mexico M5.5 130 km
Jan 13, 2013 79 km W of Las Grullas Margen Derecha, Mexico M5.4 127 km
Mar 28, 2007 43 km SW of Campo Pesquero el Colorado, Mexico M5.3 147 km
Jan 21, 2022 76 km SSW of Bahía de Lobos, Mexico M5.3 125 km
Oct 13, 2016 52 km SW of Campo Pesquero el Colorado, Mexico M5.3 150 km
Jan 18, 2001 99 km SW of Etchoropo, Mexico M5.3 109 km
Jul 3, 2024 77 km NNE of Loreto, Mexico M5.3 147 km
Sep 3, 1996 84 km ENE of Loreto, Mexico M5.2 115 km
Apr 18, 2024 84 km ENE of Loreto, Mexico M5.2 112 km
Feb 23, 2007 83 km E of Loreto, Mexico M5.2 132 km
Feb 25, 2007 73 km E of Loreto, Mexico M5.2 133 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

15 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 2. Most recent: Newton (2016).

Year Name Category Closest
2016 Newton Category 1 233 km
2014 Odile Category 2 251 km
2013 Manuel Category 1 276 km
2009 Jimena Category 2 278 km
2008 Norbert Category 2 39 km
2007 Henriette Category 1 111 km
2006 John Category 1 284 km
2003 Ignacio Category 1 281 km
2003 Marty Category 1 182 km
1998 Isis Category 1 201 km
1996 Fausto Category 1 125 km
1995 Ismael Category 1 145 km
1986 Newton Category 1 23 km
1986 Paine Category 1 216 km
1982 Paul Category 2 139 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 59°F (15°C) 0.7 in Coldest
February 63°F (17°C) 0.4 in
March 66°F (19°C) 0.2 in
April 71°F (22°C) 0.0 in Driest
May 76°F (25°C) 0.0 in
June 83°F (29°C) 0.1 in
July 91°F (33°C) 2.3 in Warmest
August 86°F (30°C) 4.1 in Wettest
September 85°F (29°C) 2.6 in
October 79°F (26°C) 1.2 in
November 70°F (21°C) 0.7 in
December 62°F (17°C) 0.9 in

La Unión has a seasonal temperature swing of 32°F / from 59°F in January to 91°F in July. Total annual precipitation is 13.3 inches, with August being the wettest month (4.1") and April the driest (0.0").

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