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Weather & Climate in San Juan de Chacña, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Juan de Chacña has a cool climate with an average annual temperature of 34°F (1°C). Winters average 33°F in January while summers reach 35°F in July / relatively mild seasonal variation. The area gets 359 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 82.5 inches (wetter than the 38-inch national average). The area receives 275.8 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 9,383 feet.
Temperature
33°F Jan (0°C)
35°F Jul (2°C)
| Annual Average | 34.2°F |
| 37% below US avg | |
| January Average | 33°F (0°C) |
| July Average | 35°F (2°C) |
| Sunny Days | 359 days/yr |
Geography
| Elevation | 9,383 ft (2,860 m) |
| Area | 148.8 sq mi (385.3 km²) |
| Population Density | 4/sq mi |
| Coordinates | -13.9240°N, 73.1819°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
221 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.0.
| Jul 6, 1991 | 15 km W of Lares, Peru | M7.0 | 141 km | 105 km |
| Aug 24, 2014 | 38 km NW of Aniso, Peru | M6.8 | 86 km | 101 km |
| May 23, 2010 | 4 km WNW of Sacsamarca, Peru | M6.1 | 126 km | 101 km |
| May 17, 2025 | 5 km W of San Pedro, Peru | M5.9 | 139 km | 101 km |
| Aug 9, 2001 | 7 km WSW of Turpay, Peru | M5.8 | 65 km | 33 km |
| May 21, 2013 | 17 km S of Chinchaypujio, Peru | M5.8 | 100 km | 92 km |
| Sep 12, 1998 | 0 km SE of Turpay, Peru | M5.6 | 70 km | 91 km |
| May 8, 1991 | 15 km WSW of Carapo, Peru | M5.6 | 138 km | 107 km |
| Dec 8, 2001 | 3 km NE of Alca, Peru | M5.6 | 141 km | 26 km |
| May 10, 1996 | 18 km WSW of Sacsamarca, Peru | M5.5 | 139 km | 101 km |
| Jul 29, 1991 | 8 km SW of Huacaña, Peru | M5.5 | 89 km | 96 km |
| May 16, 2017 | 25 km WSW of Cotaruse, Peru | M5.4 | 72 km | 10 km |
| Mar 7, 2025 | 12 km NNW of Cayarani, Peru | M5.4 | 142 km | 114 km |
| Aug 10, 2001 | 11 km SSW of Turpay, Peru | M5.4 | 72 km | 33 km |
| May 27, 1998 | central Peru | M5.3 | 49 km | 96 km |
| Oct 15, 2002 | 7 km W of Pataypampa, Peru | M5.3 | 55 km | 87 km |
| Jan 13, 1998 | 11 km ESE of Umamarca, Peru | M5.3 | 36 km | 94 km |
| Jul 27, 1997 | 0 km WSW of Pomacocha, Peru | M5.2 | 48 km | 93 km |
| Apr 13, 2020 | 7 km SW of Yanaca, Peru | M5.2 | 38 km | 70 km |
| Dec 26, 1999 | 11 km WSW of Curpahuasi, Peru | M5.1 | 48 km | 91 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Andahua-Orcopampa (190 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Andahua-Orcopampa | Pyroclastic cone(s) | 4,713 m (15,463 ft) | 1490 | 190 km |
| Quimsachata | Lava dome | 3,693 m (12,116 ft) | -4450 | 200 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (0°C) | 7.2 in | Coldest, Wettest |
| February | 48°F (9°C) | 7.2 in | |
| March | 48°F (9°C) | 7.1 in | |
| April | 48°F (9°C) | 2.7 in | |
| May | 46°F (8°C) | 1.0 in | |
| June | 44°F (7°C) | 0.4 in | Driest |
| July | 35°F (2°C) | 0.5 in | |
| August | 44°F (7°C) | 0.8 in | |
| September | 46°F (8°C) | 1.8 in | |
| October | 48°F (9°C) | 2.0 in | |
| November | 49°F (9°C) | 2.7 in | |
| December | 49°F (9°C) | 4.2 in | Warmest |
San Juan de Chacña has a seasonal temperature swing of 16°F / from 33°F in January to 49°F in December. Total annual precipitation is 37.6 inches, with January being the wettest month (7.2") and June the driest (0.4").