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Weather & Climate in San Sebastián Alcomunga, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Sebastián Alcomunga experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 50°F in January while summers reach 57°F in July / relatively mild seasonal variation. The area gets 347 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 58.2 inches (wetter than the 38-inch national average). The city sits at an elevation of 7,339 feet.
Temperature
50°F Jan (10°C)
57°F Jul (14°C)
| Annual Average | 54.6°F |
| 1% above US avg | |
| January Average | 50°F (10°C) |
| July Average | 57°F (14°C) |
| Sunny Days | 347 days/yr |
Geography
| Elevation | 7,339 ft (2,237 m) |
| Area | 114.7 sq mi (297.1 km²) |
| Population Density | 15/sq mi |
| Coordinates | 18.4371°N, 97.0268°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
157 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.0.
| Jun 15, 1999 | 1 km SE of Texcala, Mexico | M7.0 | 44 km | 70 km |
| Jan 30, 2002 | 5 km SSW of Tuxtilla, Mexico | M5.9 | 121 km | 109 km |
| Feb 23, 1994 | 12 km W of San Juan de los Cues, Mexico | M5.8 | 46 km | 73 km |
| Mar 15, 2025 | 5 km W of San Pedro Tidaá, Mexico | M5.6 | 130 km | 62 km |
| May 6, 1994 | 7 km NE of San Vicente Boquerón, Mexico | M5.3 | 104 km | 56 km |
| Apr 3, 1997 | 7 km SSE of Piaxtla, Mexico | M5.2 | 130 km | 57 km |
| May 4, 2007 | 2 km W of Reyes Etla, Mexico | M5.0 | 139 km | 71 km |
| Nov 26, 1991 | 3 km NW of Arroyo de Banco, Mexico | M4.9 | 97 km | 77 km |
| Feb 3, 2010 | 5 km NE of Xayacatlán de Bravo, Mexico | M4.9 | 98 km | 88 km |
| Nov 6, 2017 | 5 km E of La Mina, Mexico | M4.8 | 116 km | 106 km |
| Aug 4, 2021 | 8 km N of Antón Lizardo, Mexico | M4.8 | 133 km | 8 km |
| Feb 8, 2016 | 5 km WSW of Atecax, Mexico | M4.7 | 145 km | 10 km |
| Dec 27, 1999 | 4 km SW of Santa Cruz Tacache de Mina, Mexico | M4.7 | 141 km | 57 km |
| Nov 15, 1990 | 21 km N of Coixtlahuaca, Mexico | M4.7 | 67 km | 70 km |
| Jul 14, 2010 | 20 km E of Santa María Camotlán, Mexico | M4.6 | 81 km | 64 km |
| Feb 12, 2012 | 5 km WSW of Ayotzintepec, Mexico | M4.6 | 126 km | 78 km |
| Mar 20, 2012 | 11 km NNW of San Miguel Huautla, Mexico | M4.6 | 70 km | 10 km |
| Jul 24, 2016 | 26 km NNW of Coixtlahuaca, Mexico | M4.5 | 70 km | 56 km |
| Feb 9, 2006 | 7 km WNW of San José Río Manzo, Mexico | M4.5 | 141 km | 112 km |
| Jun 11, 2000 | 6 km ESE of Santiago Tilantongo, Mexico | M4.4 | 132 km | 76 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
17 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Erick | Category 4 | 127 mph | 269 km |
| 2024 | John | Category 3 | 121 mph | 285 km |
| 2022 | Agatha | Category 1 | 81 mph | 290 km |
| 2021 | Grace | Category 3 | 121 mph | 240 km |
| 2017 | Katia | Category 2 | 104 mph | 241 km |
| 2017 | Max | Category 1 | 92 mph | 277 km |
| 2017 | Franklin | Category 1 | 86 mph | 180 km |
| 2012 | Carlotta | Category 2 | 104 mph | 235 km |
| 2010 | Karl | Category 3 | 127 mph | 57 km |
| 2007 | Dean | Category 2 | 98 mph | 229 km |
| 2007 | Lorenzo | Category 1 | 81 mph | 229 km |
| 2005 | Stan | Category 1 | 81 mph | 225 km |
| 1997 | Pauline | Category 2 | 109 mph | 264 km |
| 1997 | Rick | Category 1 | 86 mph | 283 km |
| 1990 | Diana | Category 2 | 98 mph | 274 km |
| 1989 | Cosme | Category 1 | 81 mph | 270 km |
| 1988 | Debby | Category 1 | 75 mph | 253 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
10 volcanoes within 200 km. Closest: Orizaba, Pico de (71 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Orizaba, Pico de | Stratovolcano | 5,564 m (18,255 ft) | 1846 | 71 km |
| Cumbres, Las | Stratovolcano | 3,940 m (12,927 ft) | -3920 | 83 km |
| Gloria, La | Volcanic field | 3,500 m (11,483 ft) | Unknown | 102 km |
| Serdan-Oriental | Tuff cone(s) | 3,485 m (11,434 ft) | Unknown | 104 km |
| Cofre de Perote | Shield(s) | 4,282 m (14,049 ft) | 1150 | 118 km |
| Naolinco Volcanic Field | Pyroclastic cone(s) | 2,000 m (6,562 ft) | -1200 | 140 km |
| Humeros, Los | Caldera(s) | 3,150 m (10,335 ft) | -4470 | 145 km |
| Popocatepetl | Stratovolcano(es) | 5,393 m (17,694 ft) | 2020 | 180 km |
| Iztaccihuatl | Stratovolcano | 5,230 m (17,159 ft) | Unknown | 189 km |
| San Martin | Shield | 1,650 m (5,413 ft) | 1796 | 193 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 50°F (10°C) | 1.2 in | Coldest |
| February | 55°F (13°C) | 0.8 in | |
| March | 58°F (15°C) | 0.6 in | Driest |
| April | 61°F (16°C) | 1.3 in | |
| May | 62°F (17°C) | 2.5 in | Warmest |
| June | 60°F (15°C) | 8.9 in | |
| July | 57°F (14°C) | 10.0 in | Wettest |
| August | 58°F (14°C) | 9.6 in | |
| September | 58°F (14°C) | 9.0 in | |
| October | 56°F (13°C) | 5.3 in | |
| November | 54°F (12°C) | 2.1 in | |
| December | 53°F (12°C) | 1.7 in |
San Sebastián Alcomunga has a seasonal temperature swing of 12°F / from 50°F in January to 62°F in May. Total annual precipitation is 53.0 inches, with July being the wettest month (10.0") and March the driest (0.6").