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Weather & Climate in La Unión, Colombia
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 62°F in January while summers reach 63°F in July / relatively mild seasonal variation. The area gets 211 sunny days per year. Annual precipitation totals 69.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 5,646 feet.
Temperature
62°F Jan (17°C)
63°F Jul (17°C)
| Annual Average | 62.1°F |
| 15% above US avg | |
| January Average | 62°F (17°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 211 days/yr |
Geography
| Elevation | 5,646 ft (1,721 m) |
| Area | 85.3 sq mi (221.0 km²) |
| Population Density | 177/sq mi |
| Coordinates | 1.6045°N, 77.1315°W |
| Timezone | America/Bogota |
Precipitation & Snow
Air Quality
Earthquake History
69 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.3.
| Sep 30, 2012 | 11 km WNW of San Agustín, Colombia | M7.3 | 93 km | 170 km |
| Feb 9, 2013 | 2 km NNE of Yacuanquer, Colombia | M6.9 | 60 km | 145 km |
| Jul 25, 2022 | 9 km N of San Gabriel, Ecuador | M5.7 | 129 km | 3 km |
| Feb 22, 2015 | 7 km SSW of Caldono, Colombia | M5.5 | 143 km | 149 km |
| Mar 6, 2007 | 23 km SE of Paispamba, Colombia | M5.2 | 89 km | 43 km |
| Jun 27, 2000 | 3 km ENE of El Peñol, Colombia | M5.2 | 35 km | 143 km |
| Aug 18, 2004 | 2 km ENE of Paispamba, Colombia | M5.1 | 95 km | 27 km |
| May 6, 2024 | 32 km ESE of San Gabriel, Ecuador | M4.9 | 138 km | 5 km |
| Jun 12, 2018 | 13 km ESE of Tangua, Colombia | M4.9 | 62 km | 12 km |
| Jun 22, 2022 | 6 km NNE of El Ángel, Ecuador | M4.8 | 135 km | 5 km |
| Feb 14, 2019 | 6 km NE of San Gabriel, Ecuador | M4.8 | 130 km | 10 km |
| Apr 30, 2014 | Colombia-Ecuador border region | M4.8 | 125 km | 49 km |
| Apr 3, 2009 | 14 km WNW of El Ángel, Ecuador | M4.8 | 146 km | 21 km |
| May 6, 2024 | 31 km ESE of San Gabriel, Ecuador | M4.8 | 134 km | 8 km |
| Jun 20, 2012 | 28 km E of Paispamba, Colombia | M4.7 | 112 km | 158 km |
| Apr 19, 2022 | 7 km NE of Acevedo, Colombia | M4.6 | 145 km | 29 km |
| Jan 24, 2015 | 19 km N of El Ángel, Ecuador | M4.6 | 128 km | 4 km |
| Jul 18, 1998 | 14 km S of Ricaurte, Colombia | M4.6 | 112 km | 33 km |
| May 13, 2019 | 8 km WNW of El Ángel, Ecuador | M4.6 | 144 km | 15 km |
| Oct 16, 2013 | 22 km NW of El Ángel, Ecuador | M4.6 | 140 km | 9 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Nearby Volcanoes
9 volcanoes within 200 km. Closest: Galeras (50 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Galeras | Complex | 4,276 m (14,029 ft) | 2014 | 50 km |
| Cumbal | Stratovolcano | 4,764 m (15,630 ft) | 1926 | 110 km |
| Purace | Stratovolcano(es) | 4,650 m (15,256 ft) | 1977 | 114 km |
| Chiles-Cerro Negro | Stratovolcano | 4,698 m (15,413 ft) | 1936 | 125 km |
| Chachimbiro | Stratovolcano | 4,106 m (13,471 ft) | -3740 | 180 km |
| Imbabura | Compound | 4,609 m (15,121 ft) | -5550 | 190 km |
| Reventador | Stratovolcano | 3,562 m (11,686 ft) | 2020 | 196 km |
| Cuicocha | Caldera | 3,246 m (10,650 ft) | 650 | 199 km |
| Cayambe | Compound | 5,790 m (18,996 ft) | 1786 | 199 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 62°F (17°C) | 5.7 in | |
| February | 62°F (17°C) | 5.4 in | |
| March | 63°F (17°C) | 6.1 in | |
| April | 63°F (17°C) | 7.8 in | |
| May | 63°F (17°C) | 6.0 in | Warmest |
| June | 62°F (17°C) | 3.0 in | |
| July | 63°F (17°C) | 2.1 in | Driest |
| August | 63°F (17°C) | 2.2 in | |
| September | 62°F (17°C) | 3.8 in | |
| October | 62°F (17°C) | 9.3 in | |
| November | 61°F (16°C) | 9.9 in | Coldest, Wettest |
| December | 61°F (16°C) | 7.8 in |
La Unión has a seasonal temperature swing of 2°F / from 61°F in November to 63°F in May. Total annual precipitation is 69.0 inches, with November being the wettest month (9.9") and July the driest (2.1").