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Weather & Climate in La Unión, Guatemala
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 69°F in January while summers reach 74°F in July / relatively mild seasonal variation. The area gets 228 sunny days per year, above the national average. Annual precipitation totals 59.6 inches (wetter than the 38-inch national average). The city sits at an elevation of 2,959 feet.
Temperature
69°F Jan (20°C)
74°F Jul (23°C)
| Annual Average | 72.4°F |
| 34% above US avg | |
| January Average | 69°F (20°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 228 days/yr |
Geography
| Elevation | 2,959 ft (902 m) |
| Area | 286.9 sq mi (743.0 km²) |
| Population Density | 13/sq mi |
| Coordinates | 14.9666°N, 89.2902°W |
| Timezone | America/Guatemala |
Precipitation & Snow
Air Quality
Earthquake History
313 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.7.
| Jul 11, 1999 | 16 km N of Potrerillos, Honduras | M6.7 | 137 km | 10 km |
| Feb 13, 2001 | 5 km S of Cojutepeque, El Salvador | M6.6 | 149 km | 10 km |
| Nov 9, 1997 | 13 km NNE of San Sebastián, El Salvador | M6.5 | 135 km | 176 km |
| Mar 25, 2013 | 3 km NW of Fraijanes, Guatemala | M6.2 | 137 km | 189 km |
| Jul 21, 2024 | 6 km E of Jalapa, Guatemala | M6.2 | 78 km | 272 km |
| Dec 18, 1997 | 11 km WSW of Sensuntepeque, El Salvador | M6.1 | 139 km | 182 km |
| Jul 29, 2025 | 6 km SE of Comapa, Guatemala | M5.7 | 118 km | 10 km |
| Jun 27, 2012 | 5 km E of San Francisco Menéndez, El Salvador | M5.7 | 146 km | 133 km |
| Sep 19, 2011 | 3 km E of Santa María Ixhuatán, Guatemala | M5.6 | 134 km | 9 km |
| Jul 29, 2025 | 4 km WNW of Jerez, Guatemala | M5.6 | 111 km | 12 km |
| May 15, 1997 | 3 km WNW of Santa Catarina Mita, Guatemala | M5.5 | 77 km | 274 km |
| Dec 19, 1995 | 3 km WNW of Tucurú, Guatemala | M5.4 | 100 km | 10 km |
| May 18, 2005 | 1 km SSE of San José La Arada, Guatemala | M5.3 | 43 km | 42 km |
| Jul 29, 2025 | 9 km SE of Comapa, Guatemala | M5.2 | 118 km | 10 km |
| Sep 19, 2011 | 3 km WNW of Oratorio, Guatemala | M5.2 | 128 km | 10 km |
| Apr 23, 2012 | 28 km NNE of El Estor, Guatemala | M5.2 | 89 km | 10 km |
| Apr 4, 2009 | 4 km WSW of Santa Cruz Naranjo, Guatemala | M5.2 | 137 km | 10 km |
| Aug 25, 2021 | 11 km NNE of Pinalejo, Honduras | M5.2 | 117 km | 8 km |
| Jan 15, 2023 | 7 km NW of Atiquizaya, El Salvador | M5.2 | 118 km | 10 km |
| Sep 25, 2022 | 24 km NE of Puerto Barrios, Guatemala | M5.1 | 137 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
6 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2022 | Lisa | Category 1 | 92 mph | 291 km |
| 2020 | Nana | Category 1 | 75 mph | 230 km |
| 2016 | Earl | Category 1 | 86 mph | 274 km |
| 2010 | Richard | Category 2 | 98 mph | 267 km |
| 2005 | Adrian | Category 1 | 81 mph | 295 km |
| 2001 | Iris | Category 4 | 144 mph | 151 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 0.1 m (0 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1976 | GUATEMALA | Earthquake | 0.1 m | 23,000 | 45 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Chiquimula Volcanic Field (32 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chiquimula Volcanic Field | Pyroclastic cone(s) | 1,192 m (3,911 ft) | Unknown | 32 km |
| Ipala | Stratovolcano | 1,650 m (5,413 ft) | Unknown | 59 km |
| Ixtepeque | Lava dome(s) | 1,292 m (4,239 ft) | Unknown | 74 km |
| San Diego | Volcanic field | 781 m (2,562 ft) | Unknown | 80 km |
| Suchitan | Stratovolcano(es) | 2,042 m (6,699 ft) | Unknown | 82 km |
| Tahual | Stratovolcano | 1,716 m (5,630 ft) | Unknown | 89 km |
| Santiago, Cerro | Volcanic field | 1,192 m (3,911 ft) | Unknown | 94 km |
| Flores | Volcanic field | 1,600 m (5,249 ft) | Unknown | 105 km |
| Chingo | Stratovolcano | 1,775 m (5,823 ft) | Unknown | 105 km |
| Singuil, Cerro | Pyroclastic cone(s) | 926 m (3,038 ft) | Unknown | 108 km |
| Guazapa | Stratovolcano | 1,438 m (4,718 ft) | Unknown | 120 km |
| Coatepeque Caldera | Caldera | 746 m (2,448 ft) | Unknown | 125 km |
| Santa Ana | Stratovolcano | 2,381 m (7,812 ft) | 2005 | 129 km |
| Apaneca Range | Stratovolcano(es) | 2,036 m (6,680 ft) | Unknown | 131 km |
| Moyuta | Stratovolcano | 1,662 m (5,453 ft) | Unknown | 136 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 69°F (20°C) | 1.2 in | Coldest |
| February | 70°F (21°C) | 1.0 in | |
| March | 73°F (23°C) | 0.8 in | Driest |
| April | 75°F (24°C) | 1.5 in | |
| May | 76°F (24°C) | 5.1 in | Warmest |
| June | 74°F (24°C) | 10.9 in | Wettest |
| July | 74°F (23°C) | 9.5 in | |
| August | 74°F (23°C) | 8.7 in | |
| September | 73°F (23°C) | 10.5 in | |
| October | 72°F (22°C) | 5.8 in | |
| November | 70°F (21°C) | 3.1 in | |
| December | 69°F (20°C) | 1.6 in |
La Unión has a seasonal temperature swing of 7°F / from 69°F in January to 76°F in May. Total annual precipitation is 59.6 inches, with June being the wettest month (10.9") and March the driest (0.8").