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Weather & Climate in Plan de Santo Tomás, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Plan de 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 73°F in July / relatively mild seasonal variation. The area gets 184 sunny days per year. Annual precipitation totals 88.0 inches (wetter than the 38-inch national average). The city sits at an elevation of 2,782 feet.
Temperature
67°F Jan (19°C)
73°F Jul (23°C)
| Annual Average | 71.5°F |
| 32% above US avg | |
| January Average | 67°F (19°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 184 days/yr |
Geography
| Elevation | 2,782 ft (848 m) |
| Area | 302.0 sq mi (782.2 km²) |
| Population Density | 2/sq mi |
| Coordinates | 16.4133°N, 91.5828°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
283 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 | 102 km | 164 km |
| Mar 17, 2005 | 10 km NE of San Bartolo, Guatemala | M6.1 | 143 km | 197 km |
| Feb 1, 2003 | 7 km NNW of Nuevo Vicente Guerrero (El Chichonal), Mexico | M5.8 | 140 km | 211 km |
| May 5, 2025 | 5 km NNE of Nuevo León, Mexico | M5.8 | 104 km | 261 km |
| Jan 17, 2009 | 5 km NNW of Nueva Colombia, Mexico | M5.8 | 145 km | 169 km |
| Oct 17, 2000 | 4 km ENE of Nuevo Amatenango, Mexico | M5.8 | 112 km | 181 km |
| Feb 23, 2010 | 19 km NNE of Barillas, Guatemala | M5.6 | 60 km | 10 km |
| Sep 1, 2012 | 11 km N of Plan de Agua Prieta, Mexico | M5.5 | 129 km | 257 km |
| Jun 26, 2012 | 8 km N of Tectitán, Guatemala | M5.4 | 126 km | 168 km |
| Jun 19, 2021 | 11 km NE of Rizo de Oro, Mexico | M5.4 | 98 km | 216 km |
| Feb 8, 2002 | 7 km N of Dolores Jaltenango, Mexico | M5.4 | 136 km | 210 km |
| Jul 30, 2013 | 9 km W of Querétaro, Mexico | M5.4 | 150 km | 122 km |
| Feb 23, 2010 | 16 km NE of Barillas, Guatemala | M5.3 | 69 km | 9 km |
| Jun 6, 2006 | 8 km ESE of Cuilco, Guatemala | M5.3 | 118 km | 208 km |
| Sep 17, 2004 | 9 km ENE of Ramón F. Balboa, Mexico | M5.2 | 30 km | 10 km |
| Mar 20, 2010 | 13 km N of Barillas, Guatemala | M5.2 | 62 km | 40 km |
| Jun 16, 2014 | 6 km SSW of Cuilco, Guatemala | M5.2 | 125 km | 10 km |
| Jan 22, 2009 | 2 km N of Ixchiguán, Guatemala | M5.1 | 141 km | 199 km |
| May 25, 2008 | 7 km NW of Concepción Tutuapa, Guatemala | M5.0 | 130 km | 199 km |
| May 6, 2023 | 11 km WSW of Nueva América, Mexico | M5.0 | 106 km | 178 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2013 | Barbara | Category 1 | 81 mph | 248 km |
| 2010 | Richard | Category 1 | 75 mph | 276 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Tacana (153 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Tacana | Stratovolcano | 4,064 m (13,333 ft) | 1986 | 153 km |
| Almolonga | Stratovolcano | 3,173 m (10,410 ft) | 1818 | 180 km |
| Santa Maria | Stratovolcano | 3,745 m (12,287 ft) | 2020 | 184 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 67°F (19°C) | 3.0 in | Coldest |
| February | 68°F (20°C) | 2.0 in | |
| March | 71°F (22°C) | 1.8 in | Driest |
| April | 74°F (23°C) | 2.4 in | |
| May | 75°F (24°C) | 5.8 in | Warmest |
| June | 75°F (24°C) | 14.4 in | |
| July | 73°F (23°C) | 12.1 in | |
| August | 73°F (23°C) | 12.7 in | |
| September | 74°F (23°C) | 14.9 in | Wettest |
| October | 72°F (22°C) | 10.1 in | |
| November | 70°F (21°C) | 5.1 in | |
| December | 67°F (20°C) | 3.7 in |
Plan de Santo Tomás has a seasonal temperature swing of 9°F / from 67°F in January to 75°F in May. Total annual precipitation is 88.0 inches, with September being the wettest month (14.9") and March the driest (1.8").