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Weather & Climate in Sasamulco, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sasamulco has a warm climate with an average annual temperature of 79°F (26°C). Winters average 75°F in January while summers reach 79°F in July / relatively mild seasonal variation. The area gets 262 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 41.0 inches. The city sits at an elevation of 2,762 feet.
Temperature
75°F Jan (24°C)
79°F Jul (26°C)
| Annual Average | 79.0°F |
| 46% above US avg | |
| January Average | 75°F (24°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 262 days/yr |
Geography
| Elevation | 2,762 ft (842 m) |
| Area | 301.4 sq mi (780.7 km²) |
| Population Density | 2/sq mi |
| Coordinates | 18.1583°N, 99.5755°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
1,223 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.
| Sep 19, 2017 | 1 km S of Matzaco, Mexico | M7.1 | 123 km | 48 km |
| May 23, 1994 | 4 km W of San Cristóbal, Mexico | M6.3 | 101 km | 55 km |
| Aug 21, 2013 | 5 km ESE of Barrio Nuevo de los Muertos, Mexico | M6.2 | 143 km | 21 km |
| Nov 15, 2012 | 8 km N of San José Poliutla, Mexico | M6.1 | 88 km | 53 km |
| Apr 13, 2007 | 5 km SE of El Paraíso, Mexico | M6.0 | 116 km | 34 km |
| Oct 8, 2001 | 3 km WSW of Tixtlancingo, Mexico | M5.9 | 132 km | 10 km |
| Jul 21, 2000 | 12 km NW of Jolalpan, Mexico | M5.9 | 75 km | 80 km |
| Apr 28, 2008 | 21 km WNW of Tlacotepec, Mexico | M5.8 | 72 km | 57 km |
| Apr 27, 2009 | 2 km WNW of Pochotillo, Mexico | M5.8 | 126 km | 35 km |
| Jun 16, 2013 | 5 km N of Tequicuilco, Mexico | M5.8 | 39 km | 52 km |
| May 22, 2009 | 3 km E of Chila de la Sal, Mexico | M5.6 | 118 km | 62 km |
| Aug 15, 2009 | 3 km NE of San Miguel Totolapan, Mexico | M5.5 | 84 km | 57 km |
| Apr 26, 2011 | 8 km NNE of El Cortés, Mexico | M5.5 | 146 km | 11 km |
| Mar 20, 2015 | 3 km SSE of Xicotlán, Mexico | M5.4 | 113 km | 52 km |
| Jul 5, 1998 | 1 km WSW of Bajos del Ejido, Mexico | M5.3 | 141 km | 10 km |
| Jul 27, 2024 | 4 km NE of Platanillo, Mexico | M5.3 | 123 km | 35 km |
| Jan 13, 1990 | 5 km N of El Cortés, Mexico | M5.3 | 148 km | 28 km |
| Apr 13, 2007 | 4 km ENE of Cacalutla, Mexico | M5.3 | 138 km | 34 km |
| Apr 5, 2013 | 9 km E of Técpan de Galeana, Mexico | M5.3 | 146 km | 35 km |
| Feb 20, 2006 | 15 km SE of Patambó, Mexico | M5.2 | 125 km | 51 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 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Erick | Category 4 | 138 mph | 121 km |
| 2024 | John | Category 3 | 121 mph | 98 km |
| 2023 | Otis | Category 5 | 167 mph | 92 km |
| 2023 | Beatriz | Category 1 | 81 mph | 280 km |
| 2021 | Rick | Category 2 | 104 mph | 254 km |
| 2017 | Max | Category 1 | 92 mph | 177 km |
| 2015 | Carlos | Category 1 | 81 mph | 229 km |
| 2012 | Carlotta | Category 2 | 104 mph | 256 km |
| 2011 | Hilary | Category 4 | 138 mph | 263 km |
| 1997 | Pauline | Category 3 | 109 mph | 130 km |
| 1997 | Rick | Category 2 | 92 mph | 298 km |
| 1996 | Alma | Category 2 | 104 mph | 299 km |
| 1996 | Boris | Category 1 | 92 mph | 200 km |
| 1989 | Cosme | Category 1 | 86 mph | 153 km |
| 1984 | Odile | Category 2 | 104 mph | 229 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 4.0 m (13 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1820 | S. MEXICO | Earthquake | 4.0 m | — | 107 km |
| 1907 | S. MEXICO | Earthquake | 2.0 m | 8 | 136 km |
| 1962 | S. MEXICO | Earthquake | 0.8 m | 4 | 107 km |
| 2021 | S. MEXICO | Earthquake | 0.5 m | 3 | 133 km |
| 1962 | S. MEXICO | Earthquake | 0.3 m | 3 | 107 km |
| 2026 | ACAPULCO | Earthquake | 0.1 m | 2 | 143 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
6 volcanoes within 200 km. Closest: Toluca, Nevado de (107 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Toluca, Nevado de | Stratovolcano | 4,680 m (15,354 ft) | -1350 | 107 km |
| Chichinautzin | Volcanic field | 3,930 m (12,894 ft) | 400 | 113 km |
| Popocatepetl | Stratovolcano(es) | 5,393 m (17,694 ft) | 2020 | 139 km |
| Iztaccihuatl | Stratovolcano | 5,230 m (17,159 ft) | Unknown | 150 km |
| Zitacuaro-Valle de Bravo | Caldera | 3,500 m (11,483 ft) | -3050 | 155 km |
| Papayo | Lava dome | 3,600 m (11,811 ft) | Unknown | 158 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 75°F (24°C) | 0.4 in | Coldest |
| February | 77°F (25°C) | 0.1 in | |
| March | 81°F (27°C) | 0.1 in | Driest |
| April | 84°F (29°C) | 0.5 in | |
| May | 85°F (29°C) | 2.5 in | Warmest |
| June | 81°F (27°C) | 8.3 in | |
| July | 79°F (26°C) | 7.7 in | |
| August | 79°F (26°C) | 8.9 in | Wettest |
| September | 78°F (26°C) | 8.9 in | |
| October | 78°F (25°C) | 3.2 in | |
| November | 77°F (25°C) | 0.4 in | |
| December | 75°F (24°C) | 0.2 in |
Sasamulco has a seasonal temperature swing of 10°F / from 75°F in January to 85°F in May. Total annual precipitation is 41.0 inches, with August being the wettest month (8.9") and March the driest (0.1").