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Weather & Climate in Santiago, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Santiago has a warm climate with an average annual temperature of 71°F (22°C). Winters average 54°F in January while summers reach 71°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 48.8 inches (wetter than the 38-inch national average). The area receives 239.2 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 11,099 feet.
Temperature
54°F Jan (12°C)
71°F Jul (22°C)
| Annual Average | 70.7°F |
| 31% above US avg | |
| January Average | 54°F (12°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 351 days/yr |
Geography
| Elevation | 11,099 ft (3,383 m) |
| Area | 94.8 sq mi (245.5 km²) |
| Population Density | 3/sq mi |
| Coordinates | -12.0956°N, 76.2304°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
218 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M8.0.
| Aug 15, 2007 | 41 km SW of San Vicente de Cañete, Peru | M8.0 | 149 km | 39 km |
| Apr 18, 1993 | 15 km SE of Lachaqui, Peru | M6.3 | 59 km | 106 km |
| Jun 23, 2021 | 11 km WSW of Mala, Peru | M5.9 | 86 km | 50 km |
| Aug 16, 2007 | 38 km SW of San Vicente de Cañete, Peru | M5.8 | 146 km | 34 km |
| Sep 22, 2010 | 6 km ENE of Chincha Alta, Peru | M5.7 | 145 km | 50 km |
| Oct 1, 1996 | 19 km SSW of Chilca, Peru | M5.6 | 91 km | 62 km |
| Jan 7, 2022 | 6 km NW of Cocachacra, Peru | M5.6 | 45 km | 96 km |
| Jun 15, 2025 | 37 km WSW of Callao, Peru | M5.6 | 132 km | 40 km |
| May 28, 2003 | 33 km SSW of Santiago de Surco, Peru | M5.6 | 108 km | 43 km |
| Aug 16, 2007 | 22 km SSW of San Vicente de Cañete, Peru | M5.6 | 132 km | 40 km |
| Jan 23, 1990 | 4 km WSW of Cuenca, Peru | M5.6 | 132 km | 104 km |
| Nov 25, 2013 | 12 km SE of Omas, Peru | M5.5 | 56 km | 77 km |
| Feb 17, 2005 | 7 km W of Carhuamayo, Peru | M5.4 | 131 km | 126 km |
| Dec 25, 1998 | 9 km SE of Chancay, Peru | M5.4 | 119 km | 67 km |
| May 12, 2022 | 9 km W of San Bartolo, Peru | M5.4 | 76 km | 53 km |
| Mar 18, 1999 | 21 km NNE of Huancaya, Peru | M5.3 | 58 km | 116 km |
| Nov 6, 1992 | 18 km NNW of Mucllo, Peru | M5.3 | 138 km | 14 km |
| Mar 29, 2008 | 14 km SSW of Callao, Peru | M5.3 | 102 km | 51 km |
| Feb 15, 2024 | 13 km NW of Chancay, Peru | M5.2 | 140 km | 67 km |
| Aug 1, 2009 | 8 km SSW of Chambara, Peru | M5.2 | 90 km | 101 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
7 tsunamis recorded within 500 km. Highest wave on record: 30.0 m (98 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1971 | CHUNGAR | Meteorological | 30.0 m | 600 | 112 km |
| 1746 | CENTRAL PERU | Earthquake | 24.0 m | 5,941 | 106 km |
| 2007 | S. PERU | Earthquake | 10.1 m | 596 | 149 km |
| 1865 | CENTRAL PERU | Earthquake | 2.0 m | 5 | 95 km |
| 1806 | CENTRAL PERU | Earthquake | 1.0 m | — | 95 km |
| 1878 | CENTRAL PERU | Unknown | — | 5 | 84 km |
| 1860 | CENTRAL PERU | Earthquake | — | — | 95 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 54°F (12°C) | 3.4 in | |
| February | 49°F (9°C) | 4.5 in | |
| March | 48°F (9°C) | 4.9 in | Wettest |
| April | 47°F (9°C) | 1.6 in | |
| May | 45°F (7°C) | 0.2 in | |
| June | 43°F (6°C) | 0.1 in | Coldest, Driest |
| July | 71°F (22°C) | 0.1 in | Warmest |
| August | 43°F (6°C) | 0.1 in | |
| September | 45°F (7°C) | 0.4 in | |
| October | 46°F (8°C) | 0.9 in | |
| November | 47°F (8°C) | 1.0 in | |
| December | 48°F (9°C) | 2.3 in |
Santiago has a seasonal temperature swing of 28°F / from 43°F in June to 71°F in July. Total annual precipitation is 19.5 inches, with March being the wettest month (4.9") and June the driest (0.1").