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Weather & Climate in La Unión, Chile
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
La Unión experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 60°F in January while summers reach 44°F in July / relatively mild seasonal variation. The area gets 234 sunny days per year, above the national average. Annual precipitation totals 56.5 inches (wetter than the 38-inch national average). The city sits at an elevation of 105 feet.
Temperature
60°F Jan (16°C)
44°F Jul (7°C)
| Annual Average | 51.8°F |
| 4% below US avg | |
| January Average | 60°F (16°C) |
| July Average | 44°F (7°C) |
| Sunny Days | 234 days/yr |
Geography
| Elevation | 105 ft (32 m) |
| Area | 825.1 sq mi (2,137.0 km²) |
| Population Density | 32/sq mi |
| Coordinates | -40.2931°N, 73.0817°W |
| Timezone | America/Santiago |
Precipitation & Snow
Air Quality
Earthquake History
121 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.4.
| Aug 22, 1999 | 132 km WSW of Corral, Chile | M6.4 | 144 km | 33 km |
| Sep 26, 2019 | 30 km W of Villa La Angostura, Argentina | M6.1 | 108 km | 129 km |
| Jun 3, 1991 | 118 km W of Corral, Chile | M5.6 | 149 km | 10 km |
| Mar 27, 1999 | 35 km WNW of San Martín de los Andes, Argentina | M5.5 | 117 km | 33 km |
| May 18, 1991 | 116 km W of Corral, Chile | M5.4 | 149 km | 21 km |
| Mar 9, 1993 | 5 km WSW of Las Gaviotas, Chile | M5.3 | 47 km | 33 km |
| Feb 6, 1992 | 109 km WSW of Corral, Chile | M5.2 | 123 km | 34 km |
| Oct 31, 2002 | 112 km WSW of Corral, Chile | M5.2 | 141 km | 33 km |
| Sep 3, 1993 | 18 km WSW of La Ensenada, Chile | M5.2 | 112 km | 33 km |
| Aug 27, 2003 | 23 km NW of Villarrica, Chile | M5.1 | 138 km | 71 km |
| Mar 2, 2010 | 52 km NW of Corral, Chile | M5.1 | 106 km | 35 km |
| Jun 23, 2017 | 17 km SE of Pucón, Chile | M5.0 | 149 km | 115 km |
| Sep 26, 2010 | 21 km SE of Río Bueno, Chile | M5.0 | 33 km | 61 km |
| Jun 4, 2011 | 32 km NW of Villa La Angostura, Argentina | M5.0 | 104 km | 10 km |
| Jun 4, 2011 | 43 km NE of Puyehue, Chile | M4.9 | 79 km | 13 km |
| Sep 10, 1999 | 133 km WSW of Corral, Chile | M4.9 | 145 km | 33 km |
| Jun 4, 2011 | 34 km NNW of Villa La Angostura, Argentina | M4.9 | 115 km | 14 km |
| May 28, 1991 | 28 km NNE of Río Bueno, Chile | M4.9 | 32 km | 48 km |
| Aug 20, 2007 | 40 km NNW of Villa La Angostura, Argentina | M4.8 | 111 km | 50 km |
| Feb 11, 2021 | 38 km ESE of Panguipulli, Chile | M4.8 | 109 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 0.8 m (3 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2022 | TODOS LOS SANTOS LAKE | Meteorological | 0.8 m | — | 111 km |
| 1575 | SOUTHERN CHILE | Earthquake | — | 1,321 | 56 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Carran-Los Venados (86 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Carran-Los Venados | Pyroclastic cone(s) | 1,114 m (3,655 ft) | 1979 | 86 km |
| Puyehue-Cordon Caulle | Stratovolcano | 2,236 m (7,336 ft) | 2012 | 88 km |
| Antillanca Volcanic Complex | Stratovolcano(es) | 1,979 m (6,493 ft) | -230 | 96 km |
| Mocho-Choshuenco | Stratovolcano(es) | 2,422 m (7,946 ft) | 1937 | 99 km |
| Puntiagudo-Cordon Cenizos | Stratovolcano | 2,493 m (8,179 ft) | 1850 | 102 km |
| Osorno | Stratovolcano | 2,659 m (8,724 ft) | 1869 | 103 km |
| Calbuco | Stratovolcano | 1,974 m (6,476 ft) | 2015 | 122 km |
| Cayutue-La Vigueria | Pyroclastic cone(s) | 506 m (1,660 ft) | -190 | 127 km |
| Huanquihue Group | Stratovolcano(es) | 2,189 m (7,182 ft) | 1750 | 136 km |
| Villarrica | Stratovolcano | 2,847 m (9,341 ft) | 2020 | 138 km |
| Tronador | Stratovolcano | 3,478 m (11,411 ft) | Unknown | 139 km |
| Quetrupillan | Stratovolcano | 2,360 m (7,743 ft) | 255 | 146 km |
| Lanin | Stratovolcano | 3,776 m (12,388 ft) | 560 | 153 km |
| Caburgua-Huelemolle | Pyroclastic cone(s) | 1,652 m (5,420 ft) | -5050 | 163 km |
| Apagado | Pyroclastic cone | 1,210 m (3,970 ft) | -590 | 181 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 60°F (16°C) | 1.7 in | Warmest, Driest |
| February | 59°F (15°C) | 1.9 in | |
| March | 56°F (13°C) | 2.7 in | |
| April | 52°F (11°C) | 4.4 in | |
| May | 49°F (9°C) | 8.4 in | |
| June | 45°F (7°C) | 9.4 in | Wettest |
| July | 44°F (7°C) | 8.6 in | Coldest |
| August | 45°F (7°C) | 7.1 in | |
| September | 47°F (9°C) | 4.8 in | |
| October | 51°F (11°C) | 2.9 in | |
| November | 54°F (12°C) | 2.5 in | |
| December | 58°F (14°C) | 2.4 in |
La Unión has a seasonal temperature swing of 16°F / from 44°F in July to 60°F in January. Total annual precipitation is 56.5 inches, with June being the wettest month (9.4") and January the driest (1.7").