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Weather & Climate in Santo Tomás, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Santo Tomás has a warm climate with an average annual temperature of 78°F (25°C). Winters average 72°F in January while summers reach 80°F in July / relatively mild seasonal variation. The area gets 316 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 84.5 inches (wetter than the 38-inch national average). The city sits at an elevation of 682 feet.
Temperature
72°F Jan (22°C)
80°F Jul (27°C)
| Annual Average | 77.7°F |
| 44% above US avg | |
| January Average | 72°F (22°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 316 days/yr |
Geography
| Elevation | 682 ft (208 m) |
| Area | 59.6 sq mi (154.4 km²) |
| Population Density | 25/sq mi |
| Coordinates | 18.0419°N, 96.5139°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
300 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 | 105 km | 70 km |
| Jul 29, 2014 | 2 km SE of Santa Teresa, Mexico | M6.3 | 100 km | 107 km |
| Jan 30, 2002 | 5 km SSW of Tuxtilla, Mexico | M5.9 | 66 km | 109 km |
| Aug 2, 2025 | 4 km S of Xagacía, Mexico | M5.8 | 107 km | 63 km |
| Feb 23, 1994 | 12 km W of San Juan de los Cues, Mexico | M5.8 | 71 km | 73 km |
| Oct 29, 2009 | 27 km NE of Paso Nacional, Mexico | M5.7 | 141 km | 16 km |
| Mar 3, 2022 | Veracruz, Mexico | M5.7 | 119 km | 110 km |
| Mar 15, 2025 | 5 km W of San Pedro Tidaá, Mexico | M5.6 | 124 km | 62 km |
| Aug 28, 1994 | 6 km N of San Pedro Ocotepec, Mexico | M5.6 | 135 km | 68 km |
| Jan 17, 2004 | 6 km SE of Abasolo del Valle, Mexico | M5.2 | 112 km | 110 km |
| Sep 8, 2009 | 5 km SSE of San Lorenzo, Mexico | M5.1 | 98 km | 100 km |
| May 4, 2007 | 2 km W of Reyes Etla, Mexico | M5.0 | 100 km | 71 km |
| Nov 26, 1991 | 3 km NW of Arroyo de Banco, Mexico | M4.9 | 28 km | 77 km |
| Feb 14, 2007 | 3 km N of San Pedro Quiatoni, Mexico | M4.9 | 146 km | 67 km |
| Oct 9, 2001 | 5 km N of Nopalapan, Mexico | M4.9 | 125 km | 33 km |
| Nov 6, 2017 | 5 km E of La Mina, Mexico | M4.8 | 50 km | 106 km |
| Apr 22, 1992 | 9 km NNE of Santo Domingo Tomaltepec, Mexico | M4.8 | 101 km | 64 km |
| Apr 14, 2019 | 4 km SSE of Constitución Mexicana, Mexico | M4.8 | 147 km | 111 km |
| Jul 9, 2021 | 6 km ENE of Tlahuitoltepec, Mexico | M4.8 | 116 km | 70 km |
| Aug 4, 2021 | 8 km N of Antón Lizardo, Mexico | M4.8 | 133 km | 8 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 | 271 km |
| 2024 | John | Category 3 | 121 mph | 300 km |
| 2022 | Agatha | Category 2 | 104 mph | 239 km |
| 2021 | Grace | Category 3 | 121 mph | 284 km |
| 2017 | Franklin | Category 1 | 86 mph | 218 km |
| 2017 | Katia | Category 1 | 75 mph | 291 km |
| 2017 | Max | Category 1 | 92 mph | 294 km |
| 2012 | Carlotta | Category 2 | 104 mph | 226 km |
| 2010 | Karl | Category 3 | 127 mph | 100 km |
| 2007 | Dean | Category 2 | 98 mph | 274 km |
| 2007 | Lorenzo | Category 1 | 81 mph | 274 km |
| 2005 | Stan | Category 1 | 81 mph | 181 km |
| 1997 | Pauline | Category 3 | 109 mph | 255 km |
| 1997 | Rick | Category 2 | 92 mph | 238 km |
| 1989 | Cosme | Category 1 | 86 mph | 293 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
7 volcanoes within 200 km. Closest: Orizaba, Pico de (136 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Orizaba, Pico de | Stratovolcano | 5,564 m (18,255 ft) | 1846 | 136 km |
| Cumbres, Las | Stratovolcano | 3,940 m (12,927 ft) | -3920 | 147 km |
| San Martin | Shield | 1,650 m (5,413 ft) | 1796 | 151 km |
| Gloria, La | Volcanic field | 3,500 m (11,483 ft) | Unknown | 163 km |
| Serdan-Oriental | Tuff cone(s) | 3,485 m (11,434 ft) | Unknown | 170 km |
| Cofre de Perote | Shield(s) | 4,282 m (14,049 ft) | 1150 | 175 km |
| Naolinco Volcanic Field | Pyroclastic cone(s) | 2,000 m (6,562 ft) | -1200 | 183 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 72°F (22°C) | 3.6 in | |
| February | 69°F (21°C) | 3.1 in | |
| March | 74°F (23°C) | 2.9 in | Driest |
| April | 78°F (25°C) | 3.4 in | |
| May | 80°F (27°C) | 6.3 in | |
| June | 79°F (26°C) | 21.2 in | |
| July | 80°F (27°C) | 26.2 in | Warmest, Wettest |
| August | 77°F (25°C) | 24.2 in | |
| September | 76°F (25°C) | 24.3 in | |
| October | 74°F (23°C) | 13.9 in | |
| November | 71°F (22°C) | 7.3 in | |
| December | 69°F (20°C) | 4.9 in | Coldest |
Santo Tomás has a seasonal temperature swing of 12°F / from 69°F in December to 80°F in July. Total annual precipitation is 141.3 inches, with July being the wettest month (26.2") and March the driest (2.9").