San Ildefonso Amatlán, Mexico

Full City Profile

883 Population 3/sq mi density

5,072 ft Elevation 1,546 meters

68°F Avg Temperature 20°C

San Ildefonso Amatlán enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 64°F in January while summers reach 69°F in July. The area gets 362 sunny days per year. Annual precipitation totals 18.0 inches. The area receives 0.0 inches of snow annually.

Temperature

64°F Jan (18°C) 69°F Jul (21°C)

Annual Average	68.4°F
	27% above US avg
January Average	64°F (18°C)
July Average	69°F (21°C)
Sunny Days	362 days/yr

Geography

Elevation	5,072 ft (1,546 m)
Area	351.7 sq mi (911.0 km²)
Population Density	3/sq mi
Coordinates	16.3339°N, 96.4916°W
Timezone	America/Mexico_City

Precipitation & Snow

Annual Rainfall 18.0"

53% below US avg

Snowfall 0.0"

Wettest Month (Jun) 4.88"

Driest Month (Jan) 0.12"

Air Quality

Earthquake History

1,543 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.5. Most recent: M4.1 on Aug 28, 2025.

Sep 30, 1999	15 km W of San Baltazar Loxicha, Mexico	M7.5	56 km
Jun 23, 2020	9 km SE of Santa María Xadani, Mexico	M7.4	72 km
Feb 3, 1998	2 km E of Benito Juárez, Mexico	M6.4	54 km
Jun 30, 2010	2 km ESE of San Agustín Chayuco, Mexico	M6.3	138 km
Mar 19, 1996	21 km WSW of Bajos de Chila, Mexico	M5.9	102 km
Jun 14, 2004	0 km W of Santa Catarina Mechoacán, Mexico	M5.9	144 km
Feb 19, 2018	4 km SSE of Santiago Tetepec, Mexico	M5.9	132 km
May 8, 2016	3 km WNW of San Agustín Chayuco, Mexico	M5.8	144 km
Aug 2, 2025	4 km S of Xagacía, Mexico	M5.8	90 km
Feb 17, 2018	8 km SE of José María Morelos, Mexico	M5.8	148 km
Jun 27, 2016	8 km S of La Reforma, Mexico	M5.7	145 km
Feb 9, 2010	8 km E of Santa María Colotepec, Mexico	M5.7	63 km
Sep 16, 2017	11 km SSE of Salina Cruz, Mexico	M5.6	147 km
Jun 7, 2002	4 km N of Santa Catarina Loxicha, Mexico	M5.6	37 km
Aug 28, 1994	6 km N of San Pedro Ocotepec, Mexico	M5.6	102 km
Mar 15, 2025	5 km W of San Pedro Tidaá, Mexico	M5.6	149 km
Jun 14, 2017	57 km SSW of La Barra de Colotepec, Mexico	M5.5	134 km
Apr 10, 2016	5 km ESE of Santa Cruz Ozolotepec, Mexico	M5.5	40 km
Jul 24, 2020	26 km SSE of Crucecita, Mexico	M5.5	100 km
May 25, 2022	12 km WNW of Santa María Zapotitlán, Mexico	M5.5	60 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

12 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 4. Most recent: Erick (2025).

Year	Name	Category	Closest
2025	Erick	Category 4	142 km
2024	John	Category 3	230 km
2022	Agatha	Category 2	49 km
2017	Max	Category 1	260 km
2013	Barbara	Category 1	255 km
2012	Carlotta	Category 2	74 km
2011	Hilary	Category 1	270 km
2010	Karl	Category 1	287 km
1998	Lester	Category 2	204 km
1997	Pauline	Category 4	83 km
1997	Rick	Category 2	50 km
1989	Cosme	Category 1	275 km

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

Tsunami History

7 tsunamis recorded within 500 km. Highest wave on record: 1.6 m (5 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
2020	OFF COAST OF OAXACA	Earthquake	1.6 m	10	72 km
1965	MEXICO	Earthquake	0.4 m	6	74 km
2022	S. MEXICO	Earthquake	0.2 m	—	60 km
1928	S. MEXICO	Earthquake	0.2 m	4	67 km
1968	ACAPULCO	Earthquake	—	18	135 km
1928	MEXICO	Earthquake	—	—	85 km
1870	PUERTO ANGEL, MEXICO	Earthquake	—	24	106 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	64°F (18°C)	0.1 in	Coldest, Driest
February	70°F (21°C)	0.2 in
March	72°F (22°C)	0.3 in
April	74°F (23°C)	0.8 in
May	75°F (24°C)	2.3 in	Warmest
June	72°F (22°C)	4.9 in	Wettest
July	69°F (21°C)	3.7 in
August	72°F (22°C)	3.9 in
September	72°F (22°C)	3.8 in
October	71°F (22°C)	1.4 in
November	70°F (21°C)	0.3 in
December	69°F (20°C)	0.2 in

San Ildefonso Amatlán has a seasonal temperature swing of 10°F / from 64°F in January to 75°F in May. Total annual precipitation is 21.8 inches, with June being the wettest month (4.9") and January the driest (0.1").

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