All Countries
Weather & Climate in San Marcos, Guatemala
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Marcos enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 63°F in January while summers reach 67°F in July / relatively mild seasonal variation. The area gets 357 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 108.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 7,808 feet.
Temperature
63°F Jan (17°C)
67°F Jul (19°C)
| Annual Average | 65.6°F |
| 21% above US avg | |
| January Average | 63°F (17°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 357 days/yr |
Geography
| Elevation | 7,808 ft (2,380 m) |
| Area | 73.5 sq mi (190.3 km²) |
| Population Density | 640/sq mi |
| Coordinates | 14.9644°N, 91.7949°W |
| Timezone | America/Guatemala |
Precipitation & Snow
Air Quality
Earthquake History
2,214 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.4.
| Nov 7, 2012 | 33 km S of Champerico, Guatemala | M7.4 | 109 km | 24 km |
| Sep 10, 1993 | 24 km W of Puerto Madero, Mexico | M7.2 | 95 km | 34 km |
| Jun 14, 2017 | 2 km SSW of San Pablo, Guatemala | M6.9 | 24 km | 93 km |
| Mar 14, 1994 | 6 km ENE of Rizo de Oro, Mexico | M6.9 | 133 km | 164 km |
| Jul 7, 2014 | 4 km W of Puerto Madero, Mexico | M6.9 | 77 km | 53 km |
| Sep 3, 1993 | 38 km SW of Puerto Madero, Mexico | M6.8 | 110 km | 27 km |
| Feb 1, 2019 | 5 km SW of Puerto Madero, Mexico | M6.7 | 78 km | 66 km |
| Jan 10, 1998 | 10 km SSW of San José El Ídolo, Guatemala | M6.6 | 74 km | 33 km |
| Nov 11, 2012 | 32 km SW of Champerico, Guatemala | M6.5 | 101 km | 20 km |
| May 17, 2023 | 8 km SE of Canillá, Guatemala | M6.4 | 107 km | 252 km |
| May 12, 2024 | 28 km WSW of Brisas Barra de Suchiate, Mexico | M6.4 | 93 km | 62 km |
| Sep 7, 2013 | 7 km ESE of Ignacio López Rayón, Mexico | M6.4 | 53 km | 66 km |
| May 3, 2009 | 5 km S of San Lucas Tolimán, Guatemala | M6.3 | 84 km | 108 km |
| Mar 12, 2000 | 3 km ESE of Plan de Ayala, Mexico | M6.3 | 70 km | 62 km |
| May 30, 1992 | 62 km WSW of Puerto Madero, Mexico | M6.3 | 135 km | 55 km |
| Sep 18, 1991 | 4 km SE of Patzún, Guatemala | M6.2 | 94 km | 5 km |
| Jan 21, 2012 | 46 km SW of El Arenal, Mexico | M6.2 | 130 km | 45 km |
| Feb 16, 2022 | 12 km WSW of Nueva Concepción, Guatemala | M6.2 | 100 km | 60 km |
| May 8, 1999 | 9 km SSW of Champerico, Guatemala | M6.1 | 85 km | 39 km |
| Mar 17, 2005 | 10 km NE of San Bartolo, Guatemala | M6.1 | 49 km | 197 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
4 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2013 | Barbara | Category 1 | 81 mph | 263 km |
| 2005 | Adrian | Category 1 | 81 mph | 299 km |
| 1998 | Lester | Category 1 | 81 mph | 293 km |
| 1996 | Douglas | Category 1 | 75 mph | 253 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 4.0 m (13 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2005 | LAGO DE ATITLAN | Meteorological | 4.0 m | — | 69 km |
| 2012 | GUATEMALA | Earthquake | 0.4 m | 48 | 109 km |
| 1950 | GUATEMALA | Earthquake | 0.2 m | — | 74 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
10 volcanoes within 200 km. Closest: Santa Maria (35 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Santa Maria | Stratovolcano | 3,745 m (12,287 ft) | 2020 | 35 km |
| Almolonga | Stratovolcano | 3,173 m (10,410 ft) | 1818 | 35 km |
| Tacana | Stratovolcano | 4,064 m (13,333 ft) | 1986 | 39 km |
| Toliman | Stratovolcano(es) | 3,158 m (10,361 ft) | Unknown | 76 km |
| Acatenango | Stratovolcano(es) | 3,976 m (13,045 ft) | 1972 | 111 km |
| Fuego | Stratovolcano(es) | 3,763 m (12,346 ft) | 2020 | 113 km |
| Agua | Stratovolcano | 3,760 m (12,336 ft) | Unknown | 126 km |
| Pacaya | Complex | 2,569 m (8,428 ft) | 2020 | 144 km |
| Cuilapa-Barbarena | Volcanic field | 1,454 m (4,770 ft) | Unknown | 166 km |
| Tecuamburro | Stratovolcano | 1,845 m (6,053 ft) | -960 | 174 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 63°F (17°C) | 0.3 in | Driest |
| February | 55°F (13°C) | 0.6 in | |
| March | 57°F (14°C) | 1.3 in | |
| April | 58°F (15°C) | 2.8 in | |
| May | 59°F (15°C) | 9.0 in | |
| June | 58°F (15°C) | 13.4 in | |
| July | 67°F (19°C) | 8.5 in | Warmest |
| August | 58°F (14°C) | 9.8 in | |
| September | 57°F (14°C) | 13.9 in | Wettest |
| October | 57°F (14°C) | 9.3 in | |
| November | 56°F (13°C) | 1.9 in | |
| December | 54°F (12°C) | 0.7 in | Coldest |
San Marcos has a seasonal temperature swing of 13°F / from 54°F in December to 67°F in July. Total annual precipitation is 71.3 inches, with September being the wettest month (13.9") and January the driest (0.3").