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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 72°F (22°C). Winters average 67°F in January while summers reach 74°F in July / relatively mild seasonal variation. The area gets 191 sunny days per year. Annual precipitation totals 81.6 inches (wetter than the 38-inch national average). The city sits at an elevation of 2,234 feet.
Temperature
67°F Jan (19°C)
74°F Jul (23°C)
| Annual Average | 71.7°F |
| 33% above US avg | |
| January Average | 67°F (19°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 191 days/yr |
Geography
| Elevation | 2,234 ft (681 m) |
| Area | 5,900.5 sq mi (15,282.2 km²) |
| Population Density | 0/sq mi |
| Coordinates | 16.7247°N, 91.5525°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
151 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.9.
| Mar 14, 1994 | 6 km ENE of Rizo de Oro, Mexico | M6.9 | 124 km | 164 km |
| May 5, 2025 | 5 km NNE of Nuevo León, Mexico | M5.8 | 109 km | 261 km |
| Oct 17, 2000 | 4 km ENE of Nuevo Amatenango, Mexico | M5.8 | 145 km | 181 km |
| Feb 1, 2003 | 7 km NNW of Nuevo Vicente Guerrero (El Chichonal), Mexico | M5.8 | 143 km | 211 km |
| Feb 23, 2010 | 19 km NNE of Barillas, Guatemala | M5.6 | 90 km | 10 km |
| Sep 1, 2012 | 11 km N of Plan de Agua Prieta, Mexico | M5.5 | 141 km | 257 km |
| Jun 19, 2021 | 11 km NE of Rizo de Oro, Mexico | M5.4 | 119 km | 216 km |
| Feb 23, 2010 | 16 km NE of Barillas, Guatemala | M5.3 | 98 km | 9 km |
| Sep 17, 2004 | 9 km ENE of Ramón F. Balboa, Mexico | M5.2 | 35 km | 10 km |
| Mar 20, 2010 | 13 km N of Barillas, Guatemala | M5.2 | 93 km | 40 km |
| Jul 25, 2021 | Mexico-Guatemala border region | M5.0 | 113 km | 206 km |
| May 6, 2023 | 11 km WSW of Nueva América, Mexico | M5.0 | 131 km | 178 km |
| Jan 14, 2000 | 11 km S of San Francisco Pujiltic, Mexico | M5.0 | 113 km | 241 km |
| Feb 9, 2010 | 10 km ENE of Rizo de Oro, Mexico | M4.9 | 119 km | 206 km |
| Feb 9, 2016 | 7 km SSW of Nueva América, Mexico | M4.9 | 127 km | 209 km |
| Jan 11, 2025 | 8 km W of Pablo L. Sidar, Mexico | M4.9 | 130 km | 200 km |
| Jan 11, 2013 | 4 km NW of San Juan Atitán, Guatemala | M4.9 | 141 km | 228 km |
| Mar 31, 1997 | 2 km NE of La Concordia, Mexico | M4.8 | 137 km | 179 km |
| Mar 28, 2006 | 7 km NNW of Chiantla, Guatemala | M4.8 | 146 km | 223 km |
| Mar 6, 1995 | 5 km ESE of El Pacayal, Mexico | M4.8 | 137 km | 174 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
4 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2016 | Earl | Category 1 | — | 292 km |
| 2013 | Barbara | Category 1 | 81 mph | 257 km |
| 2010 | Richard | Category 1 | 75 mph | 261 km |
| 2007 | Dean | Category 2 | 86 mph | 297 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Tacana (187 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Tacana | Stratovolcano | 4,064 m (13,333 ft) | 1986 | 187 km |
| Chichon, El | Lava dome(s) | 1,150 m (3,773 ft) | 1982 | 192 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 67°F (19°C) | 2.8 in | Coldest |
| February | 68°F (20°C) | 2.1 in | |
| March | 71°F (22°C) | 2.0 in | Driest |
| April | 74°F (23°C) | 2.5 in | |
| May | 76°F (24°C) | 5.6 in | Warmest |
| June | 75°F (24°C) | 13.0 in | |
| July | 74°F (23°C) | 10.3 in | |
| August | 74°F (23°C) | 11.8 in | |
| September | 74°F (23°C) | 13.9 in | Wettest |
| October | 72°F (22°C) | 9.1 in | |
| November | 70°F (21°C) | 5.0 in | |
| December | 67°F (20°C) | 3.5 in |
Santo Tomás has a seasonal temperature swing of 9°F / from 67°F in January to 76°F in May. Total annual precipitation is 81.6 inches, with September being the wettest month (13.9") and March the driest (2.0").