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Weather & Climate in San Luis, Argentina
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Luis enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 74°F in January while summers reach 48°F in July / relatively mild seasonal variation. The area gets 303 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 18.3 inches (drier than the 38-inch national average). The city sits at an elevation of 2,392 feet.
Temperature
74°F Jan (23°C)
48°F Jul (9°C)
| Annual Average | 61.3°F |
| 14% above US avg | |
| January Average | 74°F (23°C) |
| July Average | 48°F (9°C) |
| Sunny Days | 303 days/yr |
Geography
| Elevation | 2,392 ft (729 m) |
| Area | 31.8 sq mi (82.3 km²) |
| Population Density | 5,349/sq mi |
| Coordinates | -33.2914°N, 66.3247°W |
| Timezone | America/Argentina/San_Luis |
Precipitation & Snow
Air Quality
Earthquake History
52 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.3.
| Feb 2, 2015 | 63 km W of Villa General Roca, Argentina | M6.3 | 98 km | 172 km |
| Mar 17, 2004 | 76 km NNW of Villa General Roca, Argentina | M5.5 | 147 km | 32 km |
| May 18, 2017 | 79 km W of Villa General Roca, Argentina | M5.0 | 115 km | 166 km |
| Dec 8, 1991 | 83 km ENE of San Martín, Argentina | M5.0 | 146 km | 28 km |
| Nov 15, 2013 | 96 km W of Villa General Roca, Argentina | M4.9 | 128 km | 22 km |
| Jul 29, 1996 | 29 km SE of San Luis, Argentina | M4.9 | 29 km | 33 km |
| Dec 18, 2001 | 73 km NNW of Villa General Roca, Argentina | M4.8 | 144 km | 33 km |
| Apr 12, 2015 | 80 km E of San Martín, Argentina | M4.7 | 125 km | 178 km |
| Jul 17, 2013 | 118 km NW of Unión, Argentina | M4.7 | 128 km | 12 km |
| Oct 7, 2000 | 100 km WNW of Villa General Roca, Argentina | M4.7 | 142 km | 147 km |
| Aug 4, 2023 | 88 km W of Villa General Roca, Argentina | M4.7 | 114 km | 167 km |
| Nov 24, 2001 | 81 km W of San Luis, Argentina | M4.7 | 83 km | 10 km |
| Jul 2, 2009 | San Juan-Mendoza-San Luis border region, Argentina | M4.7 | 123 km | 25 km |
| May 30, 1998 | 52 km W of Villa Mercedes, Argentina | M4.7 | 53 km | 42 km |
| May 9, 1995 | 97 km W of Villa General Roca, Argentina | M4.6 | 137 km | 10 km |
| Sep 15, 2012 | 25 km SW of Villa General Roca, Argentina | M4.6 | 55 km | 36 km |
| Jul 15, 2012 | 102 km ESE of San Martín, Argentina | M4.6 | 109 km | 200 km |
| May 5, 2014 | 101 km ESE of San Martín, Argentina | M4.6 | 119 km | 200 km |
| Jun 20, 2019 | 90 km SE of San Martín, Argentina | M4.6 | 131 km | 205 km |
| Nov 24, 1999 | 40 km SW of La Toma, Argentina | M4.5 | 41 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 74°F (23°C) | 3.0 in | Warmest, Wettest |
| February | 72°F (22°C) | 2.5 in | |
| March | 68°F (20°C) | 2.2 in | |
| April | 61°F (16°C) | 1.1 in | |
| May | 54°F (12°C) | 0.7 in | |
| June | 49°F (9°C) | 0.3 in | Driest |
| July | 48°F (9°C) | 0.5 in | Coldest |
| August | 52°F (11°C) | 0.5 in | |
| September | 57°F (14°C) | 0.8 in | |
| October | 63°F (17°C) | 1.9 in | |
| November | 68°F (20°C) | 2.1 in | |
| December | 73°F (23°C) | 2.8 in |
San Luis has a seasonal temperature swing of 26°F / from 48°F in July to 74°F in January. Total annual precipitation is 18.3 inches, with January being the wettest month (3.0") and June the driest (0.3").