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Weather & Climate in San Marcos, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Marcos enjoys a temperate climate with an average annual temperature of 58°F (15°C). Winters average 56°F in January while summers reach 60°F in July / relatively mild seasonal variation. The area gets 351 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 55.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 7,526 feet.
Temperature
56°F Jan (13°C)
60°F Jul (15°C)
| Annual Average | 58.2°F |
| 8% above US avg | |
| January Average | 56°F (13°C) |
| July Average | 60°F (15°C) |
| Sunny Days | 351 days/yr |
Geography
| Elevation | 7,526 ft (2,294 m) |
| Area | 80.7 sq mi (209.1 km²) |
| Population Density | 0/sq mi |
| Coordinates | -7.3333°N, 78.1833°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
31 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.
| Apr 11, 2005 | 18 km ENE of Shirac, Peru | M6.0 | 33 km | 130 km |
| May 15, 2014 | 16 km NNW of Paiján, Peru | M5.1 | 134 km | 64 km |
| Jul 20, 2016 | 15 km E of Virú, Peru | M4.9 | 128 km | 106 km |
| Aug 8, 2002 | 13 km S of Puente Viru, Peru | M4.9 | 149 km | 77 km |
| Aug 25, 2009 | 23 km ENE of Sartimbamba, Peru | M4.7 | 76 km | 63 km |
| May 7, 2015 | 5 km ENE of Sitabamba, Peru | M4.7 | 93 km | 48 km |
| Jun 20, 1994 | 2 km NE of Celendín, Peru | M4.6 | 54 km | 125 km |
| Apr 14, 2012 | 12 km WSW of Moche, Peru | M4.6 | 143 km | 71 km |
| Jan 27, 2007 | 8 km W of Victor Raul, Peru | M4.6 | 142 km | 76 km |
| Mar 1, 2008 | 8 km W of Aricapampa, Peru | M4.6 | 67 km | 55 km |
| Feb 23, 2023 | 22 km SW of Quiches, Peru | M4.6 | 149 km | 67 km |
| Sep 12, 2024 | 9 km NE of Mollepata, Peru | M4.5 | 94 km | 53 km |
| Nov 9, 1994 | 17 km ESE of Huamachuco, Peru | M4.5 | 66 km | 33 km |
| Dec 1, 1998 | 14 km NNW of Chalamarca, Peru | M4.5 | 113 km | 33 km |
| Mar 4, 1991 | 13 km NNW of Parcoy, Peru | M4.5 | 97 km | 10 km |
| Apr 30, 2011 | 36 km W of Saposoa, Peru | M4.5 | 128 km | 45 km |
| Feb 4, 1998 | 16 km SSW of Cascas, Peru | M4.4 | 83 km | 33 km |
| Feb 19, 2024 | 9 km ENE of Lacabamba, Peru | M4.4 | 108 km | 10 km |
| Jun 21, 1995 | 9 km WSW of Querocoto, Peru | M4.3 | 146 km | 33 km |
| Apr 12, 2001 | 13 km WSW of Moche, Peru | M4.3 | 143 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 56°F (13°C) | 3.8 in | Coldest |
| February | 58°F (15°C) | 4.7 in | |
| March | 58°F (15°C) | 5.7 in | Wettest |
| April | 58°F (15°C) | 3.8 in | |
| May | 58°F (15°C) | 1.4 in | |
| June | 57°F (14°C) | 0.5 in | Driest |
| July | 60°F (15°C) | 0.5 in | Warmest |
| August | 58°F (14°C) | 0.5 in | |
| September | 58°F (15°C) | 1.4 in | |
| October | 59°F (15°C) | 3.9 in | |
| November | 59°F (15°C) | 3.3 in | |
| December | 59°F (15°C) | 3.6 in |
San Marcos has a seasonal temperature swing of 4°F / from 56°F in January to 60°F in July. Total annual precipitation is 33.1 inches, with March being the wettest month (5.7") and June the driest (0.5").