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Weather & Climate in San Sebastián, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Sebastián experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 49°F in January while summers reach 50°F in July / relatively mild seasonal variation. The area gets 348 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 39.7 inches. The area receives 1.1 inches of snow annually. The city sits at an elevation of 10,784 feet.
Temperature
49°F Jan (9°C)
50°F Jul (10°C)
| Annual Average | 49.6°F |
| 8% below US avg | |
| January Average | 49°F (9°C) |
| July Average | 50°F (10°C) |
| Sunny Days | 348 days/yr |
Geography
| Elevation | 10,784 ft (3,287 m) |
| Area | 2.2 sq mi (5.7 km²) |
| Population Density | 0/sq mi |
| Coordinates | -13.5314°N, 71.9314°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
143 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 | 55 km | 105 km |
| Nov 27, 1999 | 10 km S of Langui, Peru | M5.9 | 131 km | 126 km |
| May 21, 2013 | 17 km S of Chinchaypujio, Peru | M5.8 | 46 km | 92 km |
| Aug 9, 2001 | 7 km WSW of Turpay, Peru | M5.8 | 115 km | 33 km |
| May 24, 2003 | 10 km W of Pichigua, Peru | M5.6 | 134 km | 144 km |
| Sep 12, 1998 | 0 km SE of Turpay, Peru | M5.6 | 107 km | 91 km |
| Mar 7, 2025 | 12 km NNW of Cayarani, Peru | M5.4 | 115 km | 114 km |
| Aug 10, 2001 | 11 km SSW of Turpay, Peru | M5.4 | 119 km | 33 km |
| May 27, 1998 | central Peru | M5.3 | 96 km | 96 km |
| Oct 15, 2002 | 7 km W of Pataypampa, Peru | M5.3 | 112 km | 87 km |
| Dec 30, 2012 | 46 km E of Salvación, Peru | M5.2 | 131 km | 28 km |
| May 2, 2024 | 28 km WNW of Chinchaypujio, Peru | M5.1 | 60 km | 10 km |
| Dec 26, 1999 | 11 km WSW of Curpahuasi, Peru | M5.1 | 110 km | 91 km |
| Jul 6, 2014 | 7 km SE of Layo, Peru | M5.1 | 143 km | 67 km |
| Aug 10, 1994 | central Peru | M5.1 | 84 km | 87 km |
| Aug 8, 2003 | 6 km N of Colcha, Peru | M5.0 | 32 km | 38 km |
| Sep 2, 2019 | central Peru | M5.0 | 88 km | 80 km |
| May 5, 2024 | 11 km SE of Colquepata, Peru | M5.0 | 37 km | 10 km |
| Aug 10, 2010 | 8 km NW of Curpahuasi, Peru | M5.0 | 100 km | 89 km |
| May 24, 2018 | 67 km NNW of Salvación, Peru | M4.9 | 139 km | 17 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
1 volcano within 200 km. Closest: Quimsachata (95 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Quimsachata | Lava dome | 3,693 m (12,116 ft) | -4450 | 95 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (9°C) | 6.2 in | Wettest |
| February | 51°F (11°C) | 5.4 in | |
| March | 51°F (11°C) | 4.8 in | |
| April | 50°F (10°C) | 2.0 in | |
| May | 48°F (9°C) | 0.4 in | |
| June | 46°F (8°C) | 0.2 in | Coldest, Driest |
| July | 50°F (10°C) | 0.3 in | |
| August | 47°F (8°C) | 0.4 in | |
| September | 50°F (10°C) | 0.9 in | |
| October | 51°F (11°C) | 1.6 in | |
| November | 52°F (11°C) | 2.8 in | Warmest |
| December | 52°F (11°C) | 4.7 in |
San Sebastián has a seasonal temperature swing of 6°F / from 46°F in June to 52°F in November. Total annual precipitation is 29.7 inches, with January being the wettest month (6.2") and June the driest (0.2").