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Weather & Climate in San Martín, Argentina
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Martín enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 73°F in January while summers reach 51°F in July / relatively mild seasonal variation. The area gets 338 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 24.3 inches (drier than the 38-inch national average). The city sits at an elevation of 3,097 feet.
Temperature
73°F Jan (23°C)
51°F Jul (11°C)
| Annual Average | 64.4°F |
| 19% above US avg | |
| January Average | 73°F (23°C) |
| July Average | 51°F (11°C) |
| Sunny Days | 338 days/yr |
Geography
| Elevation | 3,097 ft (944 m) |
| Area | 56.1 sq mi (145.2 km²) |
| Population Density | 0/sq mi |
| Coordinates | -32.4107°N, 65.6757°W |
| Timezone | America/Argentina/San_Luis |
Precipitation & Snow
Air Quality
Earthquake History
83 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 | 140 km | 172 km |
| Sep 21, 2024 | 95 km NNW of Villa General Roca, Argentina | M6.0 | 128 km | 141 km |
| Sep 9, 2016 | 70 km W of Salsacate, Argentina | M5.6 | 116 km | 158 km |
| Mar 17, 2004 | 76 km NNW of Villa General Roca, Argentina | M5.5 | 106 km | 32 km |
| Mar 20, 2007 | 113 km WNW of Candelaria, Argentina | M5.2 | 143 km | 134 km |
| Sep 24, 2024 | 57 km W of Salsacate, Argentina | M5.0 | 118 km | 152 km |
| Feb 28, 2023 | La Rioja-Cordoba border region, Argentina | M5.0 | 137 km | 10 km |
| Jun 8, 2014 | 101 km NNW of Candelaria, Argentina | M4.9 | 142 km | 11 km |
| Jul 31, 1993 | 71 km S of Castro Barros, Argentina | M4.9 | 134 km | 170 km |
| May 29, 2023 | 101 km WNW of Candelaria, Argentina | M4.9 | 134 km | 127 km |
| Jul 29, 1996 | 29 km SE of San Luis, Argentina | M4.9 | 124 km | 33 km |
| Dec 18, 2001 | 73 km NNW of Villa General Roca, Argentina | M4.8 | 106 km | 33 km |
| May 30, 1998 | 52 km W of Villa Mercedes, Argentina | M4.7 | 147 km | 42 km |
| Sep 12, 2013 | 3 km E of Mina Clavero, Argentina | M4.7 | 102 km | 20 km |
| Feb 3, 2010 | 69 km NW of Candelaria, Argentina | M4.7 | 109 km | 129 km |
| Dec 28, 2012 | 9 km ENE of Salsacate, Argentina | M4.7 | 140 km | 10 km |
| Jul 2, 2009 | San Juan-Mendoza-San Luis border region, Argentina | M4.7 | 128 km | 25 km |
| Aug 2, 2007 | 115 km WNW of Candelaria, Argentina | M4.7 | 147 km | 125 km |
| Jun 28, 2012 | 111 km NW of Candelaria, Argentina | M4.6 | 148 km | 116 km |
| May 17, 2023 | 93 km NNW of Villa General Roca, Argentina | M4.6 | 122 km | 131 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 73°F (23°C) | 3.8 in | Wettest |
| February | 74°F (23°C) | 3.2 in | |
| March | 70°F (21°C) | 2.9 in | |
| April | 64°F (18°C) | 1.8 in | |
| May | 58°F (14°C) | 1.1 in | |
| June | 52°F (11°C) | 0.6 in | Driest |
| July | 51°F (11°C) | 0.7 in | Coldest |
| August | 55°F (13°C) | 0.7 in | |
| September | 60°F (16°C) | 1.1 in | |
| October | 66°F (19°C) | 2.2 in | |
| November | 71°F (22°C) | 2.7 in | |
| December | 75°F (24°C) | 3.4 in | Warmest |
San Martín has a seasonal temperature swing of 24°F / from 51°F in July to 75°F in December. Total annual precipitation is 24.2 inches, with January being the wettest month (3.8") and June the driest (0.6").