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Weather & Climate in La Unión, Peru
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
La Unión enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 60°F in January while summers reach 62°F in July / relatively mild seasonal variation. The area gets 307 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 58.3 inches (wetter than the 38-inch national average). The area receives 163.3 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 10,502 feet.
Temperature
60°F Jan (16°C)
62°F Jul (16°C)
| Annual Average | 61.8°F |
| 14% above US avg | |
| January Average | 60°F (16°C) |
| July Average | 62°F (16°C) |
| Sunny Days | 307 days/yr |
Geography
| Elevation | 10,502 ft (3,201 m) |
| Area | 33.4 sq mi (86.6 km²) |
| Population Density | 143/sq mi |
| Coordinates | -9.8270°N, 76.8020°W |
| Timezone | America/Lima |
Precipitation & Snow
Air Quality
Earthquake History
90 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.6.
| Oct 16, 1994 | 24 km E of Tingo María, Peru | M5.6 | 127 km | 128 km |
| Feb 17, 2005 | 7 km W of Carhuamayo, Peru | M5.4 | 144 km | 126 km |
| Mar 28, 2010 | 14 km SE of Huarmey, Peru | M5.2 | 142 km | 65 km |
| Jun 5, 2008 | 30 km S of Uchiza, Peru | M5.2 | 128 km | 126 km |
| Mar 9, 2021 | 41 km NNE of Tingo María, Peru | M5.1 | 141 km | 115 km |
| Jan 8, 2003 | 51 km ESE of Tingo María, Peru | M5.1 | 143 km | 35 km |
| Mar 15, 1996 | 17 km ENE of Caraz, Peru | M5.0 | 133 km | 29 km |
| Jul 9, 2015 | 27 km NE of Tingo María, Peru | M5.0 | 133 km | 27 km |
| Jan 23, 2007 | 55 km WSW of Yuyapichis, Peru | M4.9 | 148 km | 16 km |
| Apr 19, 2025 | 23 km SW of Tingo María, Peru | M4.9 | 84 km | 113 km |
| Mar 5, 2019 | 55 km WSW of Yuyapichis, Peru | M4.9 | 148 km | 6 km |
| Aug 13, 2019 | 12 km WNW of Ticllos, Peru | M4.9 | 67 km | 15 km |
| Jul 17, 2023 | 17 km ESE of Tingo María, Peru | M4.8 | 115 km | 10 km |
| Sep 3, 2019 | 50 km NNW of Tingo María, Peru | M4.8 | 124 km | 118 km |
| Mar 25, 2006 | 58 km NNW of Oxapampa, Peru | M4.8 | 133 km | 108 km |
| Jan 6, 2002 | 25 km NNE of Tingo María, Peru | M4.8 | 128 km | 33 km |
| Aug 7, 2012 | 31 km NW of Tingo María, Peru | M4.8 | 108 km | 120 km |
| Jul 28, 2015 | 58 km ESE of Churubamba, Peru | M4.8 | 130 km | 120 km |
| Mar 14, 1998 | 34 km ESE of Tingo María, Peru | M4.7 | 133 km | 33 km |
| Aug 3, 1994 | 19 km NNW of Carhuamayo, Peru | M4.7 | 129 km | 126 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 30.0 m (98 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1971 | CHUNGAR | Meteorological | 30.0 m | 600 | 148 km |
| 2010 | 513 LAKE, HUALCAN GLACIER | Meteorological | 23.0 m | 1 | 111 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 60°F (16°C) | 4.3 in | |
| February | 49°F (10°C) | 4.9 in | |
| March | 49°F (10°C) | 5.7 in | Wettest |
| April | 49°F (10°C) | 3.3 in | |
| May | 48°F (9°C) | 1.6 in | |
| June | 47°F (8°C) | 0.6 in | Coldest |
| July | 62°F (16°C) | 0.6 in | Warmest, Driest |
| August | 47°F (9°C) | 0.9 in | |
| September | 48°F (9°C) | 1.7 in | |
| October | 50°F (10°C) | 3.0 in | |
| November | 50°F (10°C) | 3.9 in | |
| December | 49°F (10°C) | 3.9 in |
La Unión has a seasonal temperature swing of 15°F / from 47°F in June to 62°F in July. Total annual precipitation is 34.4 inches, with March being the wettest month (5.7") and July the driest (0.6").