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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 62°F (16°C). Winters average 76°F in January while summers reach 46°F in July / relatively mild seasonal variation. The area gets 322 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 8.0 inches (drier than the 38-inch national average). The city sits at an elevation of 2,152 feet.
Temperature
76°F Jan (25°C)
46°F Jul (8°C)
| Annual Average | 61.6°F |
| 14% above US avg | |
| January Average | 76°F (25°C) |
| July Average | 46°F (8°C) |
| Sunny Days | 322 days/yr |
Geography
| Elevation | 2,152 ft (656 m) |
| Area | 580.7 sq mi (1,504.0 km²) |
| Population Density | 142/sq mi |
| Coordinates | -33.0834°N, 68.4731°W |
| Timezone | America/Argentina/Mendoza |
Precipitation & Snow
Air Quality
Earthquake History
1,218 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.4.
| Jan 19, 2021 | 26 km SW of Pocito, Argentina | M6.4 | 142 km | 21 km |
| Feb 2, 2015 | 63 km W of Villa General Roca, Argentina | M6.3 | 132 km | 172 km |
| Feb 12, 2010 | 67 km SSW of San Martín, Argentina | M5.8 | 67 km | 148 km |
| Aug 5, 2006 | 23 km WSW of San Martín, Argentina | M5.6 | 23 km | 25 km |
| Nov 27, 1998 | 86 km SW of Villa Basilio Nievas, Argentina | M5.5 | 132 km | 127 km |
| Dec 21, 1990 | 79 km WNW of Mendoza, Argentina | M5.5 | 118 km | 116 km |
| Jun 20, 2019 | 66 km SSW of San Martín, Argentina | M5.4 | 67 km | 150 km |
| Dec 1, 1991 | 81 km S of Calingasta, Argentina | M5.4 | 149 km | 115 km |
| Feb 3, 2017 | 85 km WSW of Mendoza, Argentina | M5.4 | 116 km | 10 km |
| Feb 10, 1997 | 7 km ESE of Mendoza, Argentina | M5.3 | 32 km | 149 km |
| Jun 18, 2012 | 8 km NNW of San Martín, Argentina | M5.3 | 9 km | 23 km |
| Mar 11, 2009 | 56 km SW of Villa Basilio Nievas, Argentina | M5.3 | 149 km | 28 km |
| Apr 26, 2009 | 48 km W of Mendoza, Argentina | M5.3 | 85 km | 115 km |
| Jan 19, 2021 | 23 km WSW of Pocito, Argentina | M5.3 | 147 km | 10 km |
| Oct 12, 2001 | 79 km ENE of Villa Presidente Frei, Ñuñoa, Santiago, Chile, Chile | M5.3 | 121 km | 4 km |
| Jan 14, 1998 | 18 km SSE of Caucete, Argentina | M5.2 | 145 km | 112 km |
| May 23, 2020 | 70 km E of Villa Presidente Frei, Ñuñoa, Santiago, Chile, Chile | M5.2 | 135 km | 114 km |
| Feb 20, 1998 | 53 km SW of Pocito, Argentina | M5.1 | 136 km | 32 km |
| Sep 11, 2012 | 23 km S of Nueve de Julio, Argentina | M5.1 | 135 km | 124 km |
| Jun 19, 1997 | 67 km E of Los Andes, Chile | M5.1 | 136 km | 118 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Tupungatito (129 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Tupungatito | Stratovolcano | 5,660 m (18,570 ft) | 1987 | 129 km |
| San Jose | Stratovolcano(es) | 6,070 m (19,915 ft) | 1960 | 154 km |
| Maipo | Caldera | 5,323 m (17,464 ft) | 1912 | 174 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 76°F (25°C) | 1.5 in | Warmest |
| February | 74°F (23°C) | 1.5 in | Wettest |
| March | 69°F (20°C) | 1.1 in | |
| April | 61°F (16°C) | 0.4 in | |
| May | 53°F (12°C) | 0.2 in | |
| June | 46°F (8°C) | 0.2 in | Driest |
| July | 46°F (8°C) | 0.2 in | Coldest |
| August | 50°F (10°C) | 0.2 in | |
| September | 56°F (13°C) | 0.4 in | |
| October | 64°F (18°C) | 0.4 in | |
| November | 70°F (21°C) | 0.8 in | |
| December | 75°F (24°C) | 1.1 in |
San Martín has a seasonal temperature swing of 31°F / from 46°F in July to 76°F in January. Total annual precipitation is 8.0 inches, with February being the wettest month (1.5") and June the driest (0.2").