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Weather & Climate in Luján, Argentina
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Luján enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 74°F in January while summers reach 50°F in July / relatively mild seasonal variation. The area gets 295 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 22.5 inches (drier than the 38-inch national average). The city sits at an elevation of 1,985 feet.
Temperature
74°F Jan (24°C)
50°F Jul (10°C)
| Annual Average | 63.1°F |
| 17% above US avg | |
| January Average | 74°F (24°C) |
| July Average | 50°F (10°C) |
| Sunny Days | 295 days/yr |
Geography
| Elevation | 1,985 ft (605 m) |
| Area | 56.1 sq mi (145.2 km²) |
| Population Density | 34/sq mi |
| Coordinates | -32.3667°N, 65.9364°W |
| Timezone | America/Argentina/San_Luis |
Precipitation & Snow
Air Quality
Earthquake History
125 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 | 118 km | 172 km |
| Sep 21, 2024 | 95 km NNW of Villa General Roca, Argentina | M6.0 | 104 km | 141 km |
| Sep 9, 2016 | 70 km W of Salsacate, Argentina | M5.6 | 111 km | 158 km |
| Mar 17, 2004 | 76 km NNW of Villa General Roca, Argentina | M5.5 | 82 km | 32 km |
| Dec 29, 1992 | 92 km E of Caucete, Argentina | M5.4 | 150 km | 131 km |
| Mar 20, 2007 | 113 km WNW of Candelaria, Argentina | M5.2 | 120 km | 134 km |
| Apr 3, 2022 | 100 km SSE of San Agustín de Valle Fértil, Argentina | M5.1 | 146 km | 117 km |
| Feb 28, 2023 | La Rioja-Cordoba border region, Argentina | M5.0 | 132 km | 10 km |
| May 18, 2017 | 79 km W of Villa General Roca, Argentina | M5.0 | 131 km | 166 km |
| Sep 24, 2024 | 57 km W of Salsacate, Argentina | M5.0 | 115 km | 152 km |
| Jun 8, 2014 | 101 km NNW of Candelaria, Argentina | M4.9 | 127 km | 11 km |
| Jul 31, 1993 | 71 km S of Castro Barros, Argentina | M4.9 | 128 km | 170 km |
| May 29, 2023 | 101 km WNW of Candelaria, Argentina | M4.9 | 112 km | 127 km |
| Nov 15, 2013 | 96 km W of Villa General Roca, Argentina | M4.9 | 148 km | 22 km |
| Jul 29, 1996 | 29 km SE of San Luis, Argentina | M4.9 | 123 km | 33 km |
| Dec 18, 2001 | 73 km NNW of Villa General Roca, Argentina | M4.8 | 82 km | 33 km |
| Oct 7, 2000 | 100 km WNW of Villa General Roca, Argentina | M4.7 | 147 km | 147 km |
| May 7, 2002 | 99 km ESE of Caucete, Argentina | M4.7 | 138 km | 133 km |
| Aug 4, 2023 | 88 km W of Villa General Roca, Argentina | M4.7 | 144 km | 167 km |
| Sep 12, 2013 | 3 km E of Mina Clavero, Argentina | M4.7 | 116 km | 20 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 74°F (24°C) | 3.6 in | Warmest, Wettest |
| February | 73°F (23°C) | 3.2 in | |
| March | 69°F (20°C) | 2.7 in | |
| April | 62°F (17°C) | 1.7 in | |
| May | 57°F (14°C) | 1.0 in | |
| June | 51°F (11°C) | 0.6 in | Driest |
| July | 50°F (10°C) | 0.7 in | Coldest |
| August | 54°F (12°C) | 0.6 in | |
| September | 59°F (15°C) | 1.0 in | |
| October | 65°F (18°C) | 1.9 in | |
| November | 70°F (21°C) | 2.4 in | |
| December | 74°F (23°C) | 3.2 in |
Luján has a seasonal temperature swing of 24°F / from 50°F in July to 74°F in January. Total annual precipitation is 22.5 inches, with January being the wettest month (3.6") and June the driest (0.6").