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Weather & Climate in San Antonio, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Antonio has a warm climate with an average annual temperature of 79°F (26°C). Winters average 76°F in January while summers reach 80°F in July / relatively mild seasonal variation. The area gets 267 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 37.8 inches. The city sits at an elevation of 102 feet.
Temperature
76°F Jan (24°C)
80°F Jul (27°C)
| Annual Average | 78.6°F |
| 46% above US avg | |
| January Average | 76°F (24°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 267 days/yr |
Geography
| Elevation | 102 ft (31 m) |
| Area | 175.4 sq mi (454.2 km²) |
| Population Density | 4/sq mi |
| Coordinates | 15.7158°N, 96.5817°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
1,358 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.5.
| Sep 30, 1999 | 15 km W of San Baltazar Loxicha, Mexico | M7.5 | 53 km | 61 km |
| Jun 23, 2020 | 9 km SE of Santa María Xadani, Mexico | M7.4 | 64 km | 20 km |
| Jul 4, 1994 | 108 km SSW of La Barra de Colotepec, Mexico | M6.5 | 122 km | 15 km |
| Feb 3, 1998 | 2 km E of Benito Juárez, Mexico | M6.4 | 36 km | 33 km |
| Jun 30, 2010 | 2 km ESE of San Agustín Chayuco, Mexico | M6.3 | 149 km | 20 km |
| Feb 19, 2018 | 4 km SSE of Santiago Tetepec, Mexico | M5.9 | 138 km | 22 km |
| Mar 19, 1996 | 21 km WSW of Bajos de Chila, Mexico | M5.9 | 79 km | 33 km |
| Feb 17, 2018 | 8 km SE of José María Morelos, Mexico | M5.8 | 146 km | 3 km |
| Feb 9, 2010 | 8 km E of Santa María Colotepec, Mexico | M5.7 | 36 km | 40 km |
| Jun 7, 2002 | 4 km N of Santa Catarina Loxicha, Mexico | M5.6 | 47 km | 33 km |
| Jan 13, 2004 | 15 km SSW of San Jerónimo Coatlán, Mexico | M5.5 | 58 km | 28 km |
| Jul 24, 2020 | 26 km SSE of Crucecita, Mexico | M5.5 | 64 km | 11 km |
| Jun 14, 2017 | 57 km SSW of La Barra de Colotepec, Mexico | M5.5 | 77 km | 14 km |
| Feb 26, 1996 | 21 km SSW of San José del Progreso, Mexico | M5.5 | 133 km | 33 km |
| Apr 10, 2016 | 5 km ESE of Santa Cruz Ozolotepec, Mexico | M5.5 | 51 km | 25 km |
| May 25, 2022 | 12 km WNW of Santa María Zapotitlán, Mexico | M5.5 | 84 km | 34 km |
| Oct 11, 2002 | 29 km SSE of El Coyul, Mexico | M5.5 | 95 km | 33 km |
| Jun 24, 2020 | 4 km ESE of San Miguel Figueroa, Mexico | M5.4 | 23 km | 4 km |
| Apr 4, 1999 | Oaxaca, Mexico | M5.4 | 92 km | 33 km |
| Mar 20, 1996 | 13 km SW of Santiago Cuixtla, Mexico | M5.4 | 77 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
15 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Erick | Category 4 | 138 mph | 80 km |
| 2024 | John | Category 3 | 121 mph | 203 km |
| 2022 | Agatha | Category 2 | 109 mph | 3 km |
| 2022 | Bonnie | Category 1 | 86 mph | 258 km |
| 2017 | Max | Category 1 | 92 mph | 271 km |
| 2013 | Barbara | Category 1 | 81 mph | 255 km |
| 2012 | Carlotta | Category 2 | 109 mph | 18 km |
| 2011 | Hilary | Category 1 | 81 mph | 231 km |
| 2006 | John | Category 2 | 109 mph | 247 km |
| 1998 | Lester | Category 2 | 104 mph | 136 km |
| 1997 | Pauline | Category 4 | 132 mph | 34 km |
| 1997 | Rick | Category 2 | 92 mph | 21 km |
| 1996 | Douglas | Category 1 | 86 mph | 238 km |
| 1989 | Cosme | Category 1 | 86 mph | 280 km |
| 1984 | Boris | Category 1 | 75 mph | 264 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 1.6 m (5 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2020 | OFF COAST OF OAXACA | Earthquake | 1.6 m | 10 | 64 km |
| 1965 | MEXICO | Earthquake | 0.4 m | 6 | 106 km |
| 2022 | S. MEXICO | Earthquake | 0.2 m | — | 84 km |
| 1928 | S. MEXICO | Earthquake | 0.2 m | 4 | 60 km |
| 1928 | MEXICO | Earthquake | — | — | 52 km |
| 1870 | PUERTO ANGEL, MEXICO | Earthquake | — | 24 | 46 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 76°F (24°C) | 0.2 in | Coldest, Driest |
| February | 76°F (25°C) | 0.2 in | |
| March | 78°F (26°C) | 0.2 in | |
| April | 80°F (27°C) | 0.5 in | |
| May | 81°F (27°C) | 3.0 in | Warmest |
| June | 80°F (27°C) | 8.1 in | |
| July | 80°F (27°C) | 5.8 in | |
| August | 80°F (26°C) | 7.4 in | |
| September | 79°F (26°C) | 8.4 in | Wettest |
| October | 79°F (26°C) | 3.4 in | |
| November | 78°F (26°C) | 0.5 in | |
| December | 77°F (25°C) | 0.2 in |
San Antonio has a seasonal temperature swing of 5°F / from 76°F in January to 81°F in May. Total annual precipitation is 37.9 inches, with September being the wettest month (8.4") and January the driest (0.2").