Llano Grande, Mexico

Full City Profile

1,348 Population 3/sq mi density

1,066 ft Elevation 325 meters

81°F Avg Temperature 27°C

Llano Grande has a warm climate with an average annual temperature of 81°F (27°C). Winters average 78°F in January while summers reach 82°F in July. The area gets 352 sunny days per year. Annual precipitation totals 42.2 inches. The area receives 0.0 inches of snow annually.

Temperature

78°F Jan (26°C) 82°F Jul (28°C)

Annual Average	80.5°F
	49% above US avg
January Average	78°F (26°C)
July Average	82°F (28°C)
Sunny Days	352 days/yr

Geography

Elevation	1,066 ft (325 m)
Area	484.4 sq mi (1,254.6 km²)
Population Density	3/sq mi
Coordinates	16.9401°N, 99.4335°W
Timezone	America/Mexico_City

Precipitation & Snow

Annual Rainfall 42.2"

11% above US avg

Snowfall 0.0"

Wettest Month (Sep) 13.23"

Driest Month (Mar) 0.08"

Air Quality

Earthquake History

3,081 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.4. Most recent: M4.3 on Jul 24, 2025.

Sep 14, 1995	5 km N of Azoyú, Mexico	M7.4	91 km
Mar 20, 2012	6 km E of Santiago Llano Grande, Mexico	M7.4	137 km
Jul 19, 1997	4 km ENE of El Ciruelo, Mexico	M6.9	146 km
Oct 24, 1993	1 km ENE of Jolotichán, Mexico	M6.7	79 km
May 8, 2014	3 km NNE of Nuxco, Mexico	M6.4	143 km
Aug 21, 2013	5 km ESE of Barrio Nuevo de los Muertos, Mexico	M6.2	10 km
May 15, 1993	1 km ENE of Ometepec, Mexico	M6.1	114 km
Apr 2, 2012	7 km SSW of Santa María Cortijo, Mexico	M6.0	134 km
Apr 13, 2007	5 km SE of El Paraíso, Mexico	M6.0	91 km
May 15, 1993	2 km SSW of Ometepec, Mexico	M6.0	112 km
May 31, 1990	7 km NE of Nuxco, Mexico	M6.0	140 km
Dec 16, 1997	46 km SSW of Barra de Tecoanapa, Mexico	M6.0	112 km
May 10, 2014	6 km W of Nuxco, Mexico	M6.0	150 km
Nov 13, 1993	18 km SW of Montecillos, Mexico	M6.0	112 km
Oct 8, 2001	3 km WSW of Tixtlancingo, Mexico	M5.9	61 km
Apr 1, 1991	11 km SW of Corralero, Mexico	M5.8	150 km
Jun 16, 2013	5 km N of Tequicuilco, Mexico	M5.8	137 km
Apr 27, 2009	2 km WNW of Pochotillo, Mexico	M5.8	10 km
Apr 28, 2008	21 km WNW of Tlacotepec, Mexico	M5.8	128 km
May 5, 2011	2 km SE of Cuanacaxtitlán, Mexico	M5.7	89 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

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

Year	Name	Category	Closest
2025	Erick	Category 4	23 km
2024	John	Category 3	15 km
2023	Otis	Category 5	47 km
2023	Beatriz	Category 1	252 km
2021	Rick	Category 2	225 km
2017	Max	Category 1	45 km
2015	Marty	Category 1	288 km
2015	Carlos	Category 1	140 km
2013	Raymond	Category 3	262 km
2012	Carlotta	Category 2	171 km
2011	Hilary	Category 4	143 km
2006	John	Category 4	229 km
2000	Carlotta	Category 2	284 km
1997	Pauline	Category 3	29 km
1997	Rick	Category 2	162 km
1996	Boris	Category 1	140 km
1993	Calvin	Category 2	200 km
1989	Cosme	Category 1	46 km
1986	Agatha	Category 1	297 km
1984	Odile	Category 2	148 km

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

Tsunami History

16 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	—	34 km
1787	SAN MARCOS	Earthquake	4.0 m	11	111 km
1754	S. MEXICO	Earthquake	4.0 m	—	29 km
1732	S. MEXICO	Earthquake	3.0 m	—	52 km
1907	S. MEXICO	Earthquake	2.0 m	8	61 km
1957	S. MEXICO	Earthquake	1.3 m	65	61 km
1962	S. MEXICO	Earthquake	0.8 m	4	34 km
2021	S. MEXICO	Earthquake	0.5 m	3	36 km
1995	S. MEXICO	Earthquake	0.4 m	3	91 km
1962	S. MEXICO	Earthquake	0.3 m	3	30 km
1950	S. MEXICO	Earthquake	0.3 m	—	139 km
2012	S. MEXICO	Earthquake	0.2 m	2	137 km
2026	ACAPULCO	Earthquake	0.1 m	2	15 km
1868	S. MEXICO	Earthquake	—	—	52 km
1845	S. MEXICO	Earthquake	—	—	124 km
1833	S. MEXICO	Earthquake	—	—	52 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	78°F (26°C)	0.4 in
February	77°F (25°C)	0.2 in
March	79°F (26°C)	0.1 in	Driest
April	80°F (27°C)	0.1 in
May	82°F (28°C)	1.5 in
June	81°F (27°C)	12.8 in
July	82°F (28°C)	10.2 in	Warmest
August	80°F (26°C)	12.2 in
September	79°F (26°C)	13.2 in	Wettest
October	79°F (26°C)	5.9 in
November	78°F (26°C)	1.0 in
December	77°F (25°C)	0.3 in	Coldest

Llano Grande has a seasonal temperature swing of 5°F / from 77°F in December to 82°F in July. Total annual precipitation is 58.1 inches, with September being the wettest month (13.2") and March the driest (0.1").

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