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Weather & Climate in La Unión, Colombia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
La Unión has a warm climate with an average annual temperature of 72°F (22°C). Winters average 72°F in January while summers reach 73°F in July / relatively mild seasonal variation. The area gets 209 sunny days per year. Annual precipitation totals 69.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 3,173 feet.
Temperature
72°F Jan (22°C)
73°F Jul (23°C)
| Annual Average | 71.8°F |
| 33% above US avg | |
| January Average | 72°F (22°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 209 days/yr |
Geography
| Elevation | 3,173 ft (967 m) |
| Area | 53.4 sq mi (138.3 km²) |
| Population Density | 768/sq mi |
| Coordinates | 4.5328°N, 76.1032°W |
| Timezone | America/Bogota |
Precipitation & Snow
Air Quality
Earthquake History
436 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.2.
| Nov 19, 1991 | 33 km NNW of Santa Genoveva de Docordó, Colombia | M7.2 | 148 km | 21 km |
| Sep 2, 1997 | 24 km SW of Roncesvalles, Colombia | M6.8 | 86 km | 199 km |
| Aug 19, 1995 | 7 km WSW of Neira, Colombia | M6.6 | 89 km | 120 km |
| Feb 8, 1995 | 24 km NW of Darien, Colombia | M6.4 | 75 km | 74 km |
| Dec 11, 1997 | 22 km WSW of Roncesvalles, Colombia | M6.4 | 76 km | 178 km |
| Jan 25, 1999 | Colombia | M6.1 | 43 km | 17 km |
| Mar 23, 2019 | 3 km WSW of Versalles, Colombia | M6.1 | 14 km | 122 km |
| Nov 23, 1990 | 7 km N of Salento, Colombia | M6.1 | 62 km | 145 km |
| Aug 15, 1992 | 10 km NNE of Palestina, Colombia | M5.9 | 85 km | 119 km |
| Sep 22, 2001 | 17 km NNE of La Cumbre, Colombia | M5.9 | 75 km | 179 km |
| Feb 19, 1997 | 19 km ESE of Sipí, Colombia | M5.8 | 44 km | 101 km |
| Aug 27, 2023 | 5 km E of El Cantón de San Pablo, Colombia | M5.7 | 110 km | 24 km |
| Jan 19, 2024 | 7 km E of Cartago, Colombia | M5.6 | 37 km | 65 km |
| Jan 25, 1999 | 2 km SSE of Córdoba, Colombia | M5.5 | 50 km | 10 km |
| Jan 5, 2014 | 10 km S of Sipí, Colombia | M5.5 | 60 km | 54 km |
| Apr 23, 2018 | 3 km NW of Neira, Colombia | M5.3 | 96 km | 110 km |
| Sep 11, 1996 | 28 km W of Trujillo, Colombia | M5.3 | 61 km | 109 km |
| Oct 12, 1993 | 33 km NNW of Darien, Colombia | M5.2 | 70 km | 103 km |
| Sep 14, 2023 | 9 km S of El Cantón de San Pablo, Colombia | M5.2 | 106 km | 10 km |
| Jul 3, 2009 | 17 km W of Chaparral, Colombia | M5.2 | 102 km | 52 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1906 | BUENAVENTURA | Earthquake | — | — | 125 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Tolima, Nevado del (87 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Tolima, Nevado del | Stratovolcano | 5,215 m (17,110 ft) | 1943 | 87 km |
| Santa Isabel | Shield | 4,944 m (16,220 ft) | -850 | 88 km |
| Ruiz, Nevado del | Stratovolcano | 5,279 m (17,320 ft) | 2020 | 95 km |
| Bravo, Cerro | Stratovolcano | 3,985 m (13,074 ft) | 1720 | 109 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 72°F (22°C) | 4.0 in | |
| February | 72°F (22°C) | 4.3 in | |
| March | 73°F (23°C) | 5.7 in | Warmest |
| April | 72°F (22°C) | 8.1 in | |
| May | 72°F (22°C) | 7.7 in | |
| June | 72°F (22°C) | 5.4 in | |
| July | 73°F (23°C) | 3.4 in | Driest |
| August | 73°F (23°C) | 4.2 in | |
| September | 72°F (22°C) | 5.4 in | |
| October | 71°F (22°C) | 9.2 in | Wettest |
| November | 71°F (22°C) | 7.6 in | Coldest |
| December | 71°F (22°C) | 4.9 in |
La Unión has a seasonal temperature swing of 2°F / from 71°F in November to 73°F in March. Total annual precipitation is 69.9 inches, with October being the wettest month (9.2") and July the driest (3.4").