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San Juan Opico, El Salvador

Full City Profile

7,127 Population 84/sq mi density
1,699 ft Elevation 518 meters
75°F Avg Temperature 24°C
San Juan Opico has a warm climate with an average annual temperature of 75°F (24°C). Winters average 74°F in January while summers reach 75°F in July. The area gets 214 sunny days per year. Annual precipitation totals 67.5 inches. The area receives 0.0 inches of snow annually.

Temperature

74°F Jan (23°C) 75°F Jul (24°C)
Annual Average75.1°F
39% above US avg
January Average74°F (23°C)
July Average75°F (24°C)
Sunny Days214 days/yr

Geography

Elevation1,699 ft (518 m)
Area84.5 sq mi (218.9 km²)
Population Density84/sq mi
Coordinates13.8761°N, 89.3597°W
TimezoneAmerica/El_Salvador

Precipitation & Snow

Annual Rainfall 67.5"
78% above US avg
Snowfall 0.0"
Wettest Month (Sep) 12.80"
Driest Month (Feb) 0.16"

Air Quality

Earthquake History

1,695 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.7. Most recent: M6.0 on Aug 23, 2025.

Jan 13, 2001 28 km SSW of Puerto El Triunfo, El Salvador M7.7 119 km
Jun 13, 2007 43 km SSE of Iztapa, Guatemala M6.7 141 km
Feb 13, 2001 5 km S of Cojutepeque, El Salvador M6.6 51 km
May 30, 2019 32 km S of La Libertad, El Salvador M6.6 76 km
Nov 9, 1997 13 km NNE of San Sebastián, El Salvador M6.5 60 km
May 12, 2017 78 km SSW of Acajutla, El Salvador M6.2 131 km
Jan 5, 2025 56 km SSE of La Libertad, El Salvador M6.2 99 km
Jul 21, 2024 6 km E of Jalapa, Guatemala M6.2 105 km
Mar 25, 2013 3 km NW of Fraijanes, Guatemala M6.2 137 km
Dec 22, 1997 28 km SSW of Pasaco, Guatemala M6.1 104 km
Feb 28, 2001 24 km S of Zacatecoluca, El Salvador M6.1 88 km
Aug 28, 2024 56 km SSW of La Libertad, El Salvador M6.1 95 km
Dec 18, 1997 11 km WSW of Sensuntepeque, El Salvador M6.1 67 km
Jan 27, 2024 15 km W of Taxisco, Guatemala M6.1 137 km
Apr 15, 2008 42 km SSE of Iztapa, Guatemala M6.1 138 km
May 23, 1992 22 km SW of Acajutla, El Salvador M6.0 82 km
Sep 28, 1992 50 km S of Iztapa, Guatemala M6.0 149 km
Aug 23, 2025 88 km SW of Acajutla, El Salvador M6.0 147 km
Sep 12, 1993 27 km S of Taxisco, Guatemala M6.0 116 km
Dec 4, 1997 33 km S of Iztapa, Guatemala M6.0 143 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

2 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 4.

Year Name Category Closest
2005 Adrian Category 1 184 km
2001 Iris Category 4 268 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

3 tsunamis recorded within 500 km. Highest wave on record: 2.0 m (7 ft).

Year Location Cause Max Wave Deaths Distance
1902 EL SALVADOR-GUATEMALA Questionable Earthquake 2.0 m 185 45 km
2001 EL SALVADOR Earthquake 0.3 m 844 119 km
1859 EL SALVADOR Earthquake 51 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

15 volcanoes within 200 km. Closest: San Salvador (17 km).

Name Type Elevation Last Eruption Distance
San Salvador Stratovolcano 1,893 m (6,211 ft) 1917 17 km
Coatepeque Caldera Caldera 746 m (2,448 ft) Unknown 21 km
Guazapa Stratovolcano 1,438 m (4,718 ft) Unknown 26 km
Santa Ana Stratovolcano 2,381 m (7,812 ft) 2005 29 km
Singuil, Cerro Pyroclastic cone(s) 926 m (3,038 ft) Unknown 35 km
Ilopango Caldera 450 m (1,476 ft) 1880 40 km
San Diego Volcanic field 781 m (2,562 ft) Unknown 46 km
Apaneca Range Stratovolcano(es) 2,036 m (6,680 ft) Unknown 46 km
Chingo Stratovolcano 1,775 m (5,823 ft) Unknown 48 km
San Vicente Stratovolcano 2,182 m (7,159 ft) Unknown 65 km
Apastepeque Field Volcanic field 700 m (2,297 ft) Unknown 66 km
Ixtepeque Lava dome(s) 1,292 m (4,239 ft) Unknown 70 km
Suchitan Stratovolcano(es) 2,042 m (6,699 ft) Unknown 74 km
Santiago, Cerro Volcanic field 1,192 m (3,911 ft) Unknown 75 km
Ipala Stratovolcano 1,650 m (5,413 ft) Unknown 80 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 74°F (23°C) 0.2 in
February 75°F (24°C) 0.2 in Driest
March 77°F (25°C) 0.5 in
April 78°F (26°C) 2.3 in Warmest
May 77°F (25°C) 6.9 in
June 75°F (24°C) 12.1 in
July 75°F (24°C) 12.1 in
August 75°F (24°C) 11.2 in
September 74°F (24°C) 12.8 in Wettest
October 74°F (23°C) 7.8 in
November 73°F (23°C) 1.3 in
December 73°F (23°C) 0.3 in Coldest

San Juan Opico has a seasonal temperature swing of 6°F / from 73°F in December to 78°F in April. Total annual precipitation is 67.5 inches, with September being the wettest month (12.8") and February the driest (0.2").

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