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Weather & Climate in San Miguel, El Salvador
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Miguel has a warm climate with an average annual temperature of 76°F (25°C). Winters average 76°F in January while summers reach 77°F in July / relatively mild seasonal variation. The area gets 208 sunny days per year. Annual precipitation totals 73.6 inches (wetter than the 38-inch national average). The city sits at an elevation of 427 feet.
Temperature
76°F Jan (24°C)
77°F Jul (25°C)
| Annual Average | 76.4°F |
| 41% above US avg | |
| January Average | 76°F (24°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 208 days/yr |
Geography
| Elevation | 427 ft (130 m) |
| Area | 229.3 sq mi (594.0 km²) |
| Population Density | 1,078/sq mi |
| Coordinates | 13.4826°N, 88.1821°W |
| Timezone | America/El_Salvador |
Precipitation & Snow
Air Quality
Earthquake History
1,711 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.7.
| Jan 13, 2001 | 28 km SSW of Puerto El Triunfo, El Salvador | M7.7 | 71 km | 60 km |
| May 30, 2019 | 32 km S of La Libertad, El Salvador | M6.6 | 126 km | 58 km |
| Feb 13, 2001 | 5 km S of Cojutepeque, El Salvador | M6.6 | 84 km | 10 km |
| Nov 9, 1997 | 13 km NNE of San Sebastián, El Salvador | M6.5 | 79 km | 176 km |
| Jul 19, 2023 | 43 km S of Intipucá, El Salvador | M6.5 | 77 km | 71 km |
| Mar 2, 2014 | 33 km SW of Jiquilillo, Nicaragua | M6.2 | 116 km | 60 km |
| Jan 5, 2025 | 56 km SSE of La Libertad, El Salvador | M6.2 | 120 km | 46 km |
| Feb 28, 2001 | 24 km S of Zacatecoluca, El Salvador | M6.1 | 73 km | 65 km |
| Dec 18, 1997 | 11 km WSW of Sensuntepeque, El Salvador | M6.1 | 72 km | 182 km |
| Apr 3, 1999 | 13 km S of Amapala, Honduras | M6.0 | 69 km | 38 km |
| Apr 2, 2018 | 24 km SW of Puerto El Triunfo, El Salvador | M5.9 | 68 km | 50 km |
| Jul 31, 2019 | 38 km SSW of La Libertad, El Salvador | M5.9 | 136 km | 43 km |
| Jun 12, 1993 | 14 km ESE of Amapala, Honduras | M5.9 | 75 km | 218 km |
| Mar 16, 2001 | 22 km SW of Puerto El Triunfo, El Salvador | M5.9 | 67 km | 49 km |
| May 16, 2019 | 41 km WSW of Jiquilillo, Nicaragua | M5.9 | 101 km | 72 km |
| Mar 29, 2001 | 46 km SW of Jiquilisco, El Salvador | M5.8 | 93 km | 33 km |
| Feb 7, 2001 | 32 km SSW of Zacatecoluca, El Salvador | M5.8 | 88 km | 64 km |
| Jan 15, 2001 | 23 km S of Puerto El Triunfo, El Salvador | M5.8 | 62 km | 75 km |
| Dec 14, 1996 | 66 km SSW of Puerto El Triunfo, El Salvador | M5.7 | 107 km | 33 km |
| Jan 14, 2001 | 18 km SSW of Puerto El Triunfo, El Salvador | M5.7 | 60 km | 49 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2005 | Adrian | Category 1 | 81 mph | 254 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
5 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 | 143 km |
| 2001 | EL SALVADOR | Earthquake | 0.3 m | 844 | 71 km |
| 2014 | GULF OF FONSECA | Earthquake | 0.0 m | 1 | 107 km |
| 1919 | GULF OF FONSECA | Earthquake | — | — | 130 km |
| 1859 | EL SALVADOR | Earthquake | — | — | 44 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Chinameca (16 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chinameca | Stratovolcano | 1,300 m (4,265 ft) | Unknown | 16 km |
| Tigre, El | Stratovolcano | 1,640 m (5,381 ft) | Unknown | 27 km |
| Usulutan | Stratovolcano | 1,449 m (4,754 ft) | Unknown | 32 km |
| Tecapa | Stratovolcano | 1,593 m (5,226 ft) | Unknown | 35 km |
| Taburete | Stratovolcano | 1,172 m (3,845 ft) | Unknown | 38 km |
| Zacate Grande, Isla | Stratovolcano | 640 m (2,100 ft) | Unknown | 62 km |
| Tigre, Isla el | Stratovolcano | 783 m (2,569 ft) | Unknown | 63 km |
| Apastepeque Field | Volcanic field | 700 m (2,297 ft) | Unknown | 69 km |
| San Vicente | Stratovolcano | 2,182 m (7,159 ft) | Unknown | 72 km |
| Cosiguina | Stratovolcano | 872 m (2,861 ft) | 1859 | 87 km |
| Ilopango | Caldera | 450 m (1,476 ft) | 1880 | 97 km |
| Guazapa | Stratovolcano | 1,438 m (4,718 ft) | Unknown | 111 km |
| San Salvador | Stratovolcano | 1,893 m (6,211 ft) | 1917 | 123 km |
| Coatepeque Caldera | Caldera | 746 m (2,448 ft) | Unknown | 154 km |
| San Cristobal | Stratovolcano | 1,745 m (5,725 ft) | 2019 | 154 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 76°F (24°C) | 0.1 in | Driest |
| February | 77°F (25°C) | 0.1 in | |
| March | 78°F (26°C) | 0.3 in | |
| April | 79°F (26°C) | 1.3 in | Warmest |
| May | 78°F (26°C) | 8.1 in | |
| June | 76°F (25°C) | 12.9 in | |
| July | 77°F (25°C) | 9.7 in | |
| August | 76°F (25°C) | 11.0 in | |
| September | 75°F (24°C) | 15.6 in | Wettest |
| October | 75°F (24°C) | 12.3 in | |
| November | 75°F (24°C) | 2.0 in | |
| December | 75°F (24°C) | 0.2 in | Coldest |
San Miguel has a seasonal temperature swing of 5°F / from 75°F in December to 79°F in April. Total annual precipitation is 73.6 inches, with September being the wettest month (15.6") and January the driest (0.1").