Santiago Petlacala, Mexico

Full City Profile

980 Population 3/sq mi density

7,178 ft Elevation 2,188 meters

65°F Avg Temperature 18°C

Santiago Petlacala enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 61°F in January while summers reach 66°F in July. The area gets 360 sunny days per year. Annual precipitation totals 35.7 inches. The area receives 0.0 inches of snow annually.

Temperature

61°F Jan (16°C) 66°F Jul (19°C)

Annual Average	65.2°F
	21% above US avg
January Average	61°F (16°C)
July Average	66°F (19°C)
Sunny Days	360 days/yr

Geography

Elevation	7,178 ft (2,188 m)
Area	381.9 sq mi (989.2 km²)
Population Density	3/sq mi
Coordinates	17.2994°N, 98.2886°W
Timezone	America/Mexico_City

Precipitation & Snow

Annual Rainfall 35.7"

6% below US avg

Snowfall 0.0"

Wettest Month (Sep) 9.33"

Driest Month (Mar) 0.35"

Air Quality

Earthquake History

1,813 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.4. Most recent: M4.8 on Jun 11, 2025.

Mar 20, 2012	6 km E of Santiago Llano Grande, Mexico	M7.4	90 km
Sep 14, 1995	5 km N of Azoyú, Mexico	M7.4	67 km
Feb 16, 2018	4 km S of Pinotepa de Don Luis, Mexico	M7.2	107 km
Sep 19, 2017	1 km S of Matzaco, Mexico	M7.1	141 km
Feb 25, 1996	24 km SSW of Santa María Chico Ometepec, Mexico	M7.1	149 km
Jul 19, 1997	4 km ENE of El Ciruelo, Mexico	M6.9	108 km
Oct 24, 1993	1 km ENE of Jolotichán, Mexico	M6.7	76 km
Jun 30, 2010	2 km ESE of San Agustín Chayuco, Mexico	M6.3	114 km
Aug 21, 2013	5 km ESE of Barrio Nuevo de los Muertos, Mexico	M6.2	137 km
Feb 25, 1996	7 km SE of Santa María Chico Ometepec, Mexico	M6.2	136 km
May 15, 1993	1 km ENE of Ometepec, Mexico	M6.1	68 km
Apr 2, 2012	7 km SSW of Santa María Cortijo, Mexico	M6.0	101 km
May 15, 1993	2 km SSW of Ometepec, Mexico	M6.0	71 km
Dec 16, 1997	46 km SSW of Barra de Tecoanapa, Mexico	M6.0	146 km
Nov 13, 1993	18 km SW of Montecillos, Mexico	M6.0	119 km
Jul 21, 2000	12 km NW of Jolalpan, Mexico	M5.9	141 km
Jun 14, 2004	0 km W of Santa Catarina Mechoacán, Mexico	M5.9	117 km
Feb 19, 2018	4 km SSE of Santiago Tetepec, Mexico	M5.9	127 km
Apr 1, 1991	11 km SW of Corralero, Mexico	M5.8	125 km
Apr 27, 2009	2 km WNW of Pochotillo, Mexico	M5.8	127 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

14 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 5. Most recent: Erick (2025).

Year	Name	Category	Closest
2025	Erick	Category 4	86 km
2024	John	Category 3	101 km
2023	Otis	Category 5	174 km
2022	Agatha	Category 2	253 km
2017	Max	Category 1	93 km
2015	Carlos	Category 1	258 km
2012	Carlotta	Category 2	98 km
2011	Hilary	Category 3	233 km
2010	Karl	Category 3	238 km
1997	Pauline	Category 4	100 km
1997	Rick	Category 2	178 km
1996	Boris	Category 1	256 km
1989	Cosme	Category 1	88 km
1984	Odile	Category 2	275 km

Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

12 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	—	140 km
1787	SAN MARCOS	Earthquake	4.0 m	11	92 km
1754	S. MEXICO	Earthquake	4.0 m	—	112 km
1957	S. MEXICO	Earthquake	1.3 m	65	124 km
1962	S. MEXICO	Earthquake	0.8 m	4	140 km
1995	S. MEXICO	Earthquake	0.4 m	3	67 km
1962	S. MEXICO	Earthquake	0.3 m	3	129 km
1950	S. MEXICO	Earthquake	0.3 m	—	91 km
2012	S. MEXICO	Earthquake	0.2 m	2	90 km
1996	MEXICO	Earthquake	0.1 m	—	149 km
2026	ACAPULCO	Earthquake	0.1 m	2	117 km
1968	ACAPULCO	Earthquake	—	18	105 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

1 volcano within 200 km. Closest: Popocatepetl (195 km).

Name	Type	Elevation	Last Eruption	Distance
Popocatepetl	Stratovolcano(es)	5,393 m (17,694 ft)	2020	195 km

Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	61°F (16°C)	0.5 in	Coldest
February	64°F (18°C)	0.4 in
March	66°F (19°C)	0.4 in	Driest
April	69°F (20°C)	1.0 in
May	70°F (21°C)	3.5 in	Warmest
June	68°F (20°C)	9.2 in
July	66°F (19°C)	9.1 in
August	67°F (20°C)	9.3 in
September	67°F (19°C)	9.3 in	Wettest
October	66°F (19°C)	4.2 in
November	64°F (18°C)	0.9 in
December	63°F (17°C)	0.4 in

Santiago Petlacala has a seasonal temperature swing of 8°F / from 61°F in January to 70°F in May. Total annual precipitation is 48.2 inches, with September being the wettest month (9.3") and March the driest (0.4").

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