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Weather & Climate in José de San Martín, Argentina
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
José de San Martín experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 60°F in January while summers reach 35°F in July / relatively mild seasonal variation. The area gets 321 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 8.1 inches (drier than the 38-inch national average). The area receives 2.5 inches of snow annually. The city sits at an elevation of 2,238 feet.
Temperature
60°F Jan (16°C)
35°F Jul (2°C)
| Annual Average | 47.7°F |
| 12% below US avg | |
| January Average | 60°F (16°C) |
| July Average | 35°F (2°C) |
| Sunny Days | 321 days/yr |
Geography
| Elevation | 2,238 ft (682 m) |
| Area | 3.5 sq mi (8.9 km²) |
| Population Density | 421/sq mi |
| Coordinates | -44.0514°N, 70.4696°W |
| Timezone | America/Argentina/Catamarca |
Precipitation & Snow
Air Quality
Earthquake History
2 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.5.
| Feb 10, 2007 | 14 km NNW of Trevelin, Argentina | M5.5 | 148 km | 157 km |
| Jun 1, 2011 | 10 km NE of Futaleufú, Chile | M4.4 | 149 km | 165 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 60°F (16°C) | 0.2 in | Warmest, Driest |
| February | 59°F (15°C) | 0.4 in | |
| March | 54°F (12°C) | 0.8 in | |
| April | 47°F (8°C) | 0.9 in | |
| May | 41°F (5°C) | 0.8 in | |
| June | 36°F (2°C) | 1.6 in | Wettest |
| July | 35°F (2°C) | 0.9 in | Coldest |
| August | 38°F (4°C) | 0.7 in | |
| September | 43°F (6°C) | 0.5 in | |
| October | 48°F (9°C) | 0.5 in | |
| November | 53°F (12°C) | 0.6 in | |
| December | 57°F (14°C) | 0.4 in |
José de San Martín has a seasonal temperature swing of 25°F / from 35°F in July to 60°F in January. Total annual precipitation is 8.1 inches, with June being the wettest month (1.6") and January the driest (0.2").