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Weather & Climate in Unión Buenavista, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Unión Buenavista has a warm climate with an average annual temperature of 71°F (22°C). Winters average 67°F in January while summers reach 72°F in July / relatively mild seasonal variation. The area gets 204 sunny days per year. Annual precipitation totals 81.3 inches (wetter than the 38-inch national average). The city sits at an elevation of 5,866 feet.
Temperature
67°F Jan (20°C)
72°F Jul (22°C)
| Annual Average | 71.1°F |
| 32% above US avg | |
| January Average | 67°F (20°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 204 days/yr |
Geography
| Elevation | 5,866 ft (1,788 m) |
| Area | 321.2 sq mi (831.8 km²) |
| Population Density | 5/sq mi |
| Coordinates | 15.7953°N, 92.5442°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
1,146 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.2.
| Sep 10, 1993 | 24 km W of Puerto Madero, Mexico | M7.2 | 120 km | 34 km |
| Mar 14, 1994 | 6 km ENE of Rizo de Oro, Mexico | M6.9 | 25 km | 164 km |
| Jun 14, 2017 | 2 km SSW of San Pablo, Guatemala | M6.9 | 114 km | 93 km |
| Jul 7, 2014 | 4 km W of Puerto Madero, Mexico | M6.9 | 120 km | 53 km |
| Sep 3, 1993 | 38 km SW of Puerto Madero, Mexico | M6.8 | 143 km | 27 km |
| Feb 1, 2019 | 5 km SW of Puerto Madero, Mexico | M6.7 | 124 km | 66 km |
| Nov 28, 2001 | 2 km ESE of El Carmen, Mexico | M6.4 | 65 km | 85 km |
| Sep 7, 2013 | 7 km ESE of Ignacio López Rayón, Mexico | M6.4 | 140 km | 66 km |
| Jan 16, 2002 | 2 km SW of Las Brisas, Mexico | M6.4 | 71 km | 80 km |
| Dec 31, 1996 | 4 km SW of El Ramal (Porvenir), Mexico | M6.4 | 46 km | 100 km |
| Jun 7, 1998 | 2 km NNE of Cabeza de Toro, Mexico | M6.3 | 133 km | 87 km |
| Mar 12, 2000 | 3 km ESE of Plan de Ayala, Mexico | M6.3 | 92 km | 62 km |
| Jan 21, 2012 | 46 km SW of El Arenal, Mexico | M6.2 | 114 km | 45 km |
| Mar 17, 2005 | 10 km NE of San Bartolo, Guatemala | M6.1 | 144 km | 197 km |
| Apr 10, 1994 | 3 km E of Pajapita, Guatemala | M6.0 | 133 km | 100 km |
| Jan 19, 2001 | 6 km NNE of Hidalgo, Mexico | M6.0 | 48 km | 93 km |
| Aug 9, 2023 | 7 km NNE of Tonalá, Mexico | M5.8 | 133 km | 103 km |
| May 5, 2025 | 5 km NNE of Nuevo León, Mexico | M5.8 | 82 km | 261 km |
| Jan 17, 2009 | 5 km NNW of Nueva Colombia, Mexico | M5.8 | 22 km | 169 km |
| Dec 5, 1996 | 2 km ENE of Brisas Barra de Suchiate, Mexico | M5.8 | 144 km | 91 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
3 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2013 | Barbara | Category 1 | 81 mph | 152 km |
| 1998 | Lester | Category 2 | 92 mph | 267 km |
| 1996 | Douglas | Category 1 | 75 mph | 292 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 50.0 m (164 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2007 | JUAN DE GRIJALVA, CHIAPAS | Meteorological | 50.0 m | 19 | 131 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: Tacana (87 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Tacana | Stratovolcano | 4,064 m (13,333 ft) | 1986 | 87 km |
| Almolonga | Stratovolcano | 3,173 m (10,410 ft) | 1818 | 156 km |
| Santa Maria | Stratovolcano | 3,745 m (12,287 ft) | 2020 | 157 km |
| Chichon, El | Lava dome(s) | 1,150 m (3,773 ft) | 1982 | 189 km |
| Toliman | Stratovolcano(es) | 3,158 m (10,361 ft) | Unknown | 196 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 67°F (20°C) | 0.5 in | Coldest |
| February | 69°F (20°C) | 0.4 in | Driest |
| March | 72°F (22°C) | 0.6 in | |
| April | 74°F (23°C) | 1.8 in | |
| May | 74°F (24°C) | 5.7 in | Warmest |
| June | 73°F (23°C) | 14.7 in | |
| July | 72°F (22°C) | 13.7 in | |
| August | 72°F (22°C) | 14.6 in | |
| September | 72°F (22°C) | 16.3 in | Wettest |
| October | 71°F (22°C) | 10.2 in | |
| November | 69°F (21°C) | 2.2 in | |
| December | 68°F (20°C) | 0.8 in |
Unión Buenavista has a seasonal temperature swing of 7°F / from 67°F in January to 74°F in May. Total annual precipitation is 81.3 inches, with September being the wettest month (16.3") and February the driest (0.4").