San Dionisio Ocotlán, Mexico

Full City Profile

1,007 Population 8/sq mi density

4,990 ft Elevation 1,521 meters

68°F Avg Temperature 20°C

San Dionisio Ocotlán 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	4,990 ft (1,521 m)
Area	123.9 sq mi (320.8 km²)
Population Density	8/sq mi
Coordinates	16.7465°N, 96.6800°W
Timezone	America/Mexico_City

Precipitation & Snow

Annual Rainfall 18.0"

53% below US avg

Snowfall 0.0"

Wettest Month (Jun) 6.50"

Driest Month (Jan) 0.08"

Air Quality

Earthquake History

1,312 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.5. Most recent: M4.4 on Aug 21, 2025.

Sep 30, 1999	15 km W of San Baltazar Loxicha, Mexico	M7.5	81 km
Jun 23, 2020	9 km SE of Santa María Xadani, Mexico	M7.4	120 km
Feb 16, 2018	4 km S of Pinotepa de Don Luis, Mexico	M7.2	144 km
Feb 3, 1998	2 km E of Benito Juárez, Mexico	M6.4	104 km
Jun 30, 2010	2 km ESE of San Agustín Chayuco, Mexico	M6.3	124 km
Jun 14, 2004	0 km W of Santa Catarina Mechoacán, Mexico	M5.9	132 km
Mar 19, 1996	21 km WSW of Bajos de Chila, Mexico	M5.9	120 km
Feb 19, 2018	4 km SSE of Santiago Tetepec, Mexico	M5.9	123 km
May 8, 2016	3 km WNW of San Agustín Chayuco, Mexico	M5.8	129 km
Aug 2, 2025	4 km S of Xagacía, Mexico	M5.8	60 km
Feb 17, 2018	8 km SE of José María Morelos, Mexico	M5.8	143 km
Feb 9, 2010	8 km E of Santa María Colotepec, Mexico	M5.7	97 km
Jun 27, 2016	8 km S of La Reforma, Mexico	M5.7	125 km
Jun 7, 2002	4 km N of Santa Catarina Loxicha, Mexico	M5.6	72 km
Mar 15, 2025	5 km W of San Pedro Tidaá, Mexico	M5.6	103 km
Aug 28, 1994	6 km N of San Pedro Ocotepec, Mexico	M5.6	94 km
Jan 13, 2004	15 km SSW of San Jerónimo Coatlán, Mexico	M5.5	76 km
Jul 24, 2020	26 km SSE of Crucecita, Mexico	M5.5	150 km
May 25, 2022	12 km WNW of Santa María Zapotitlán, Mexico	M5.5	100 km
Apr 10, 2016	5 km ESE of Santa Cruz Ozolotepec, Mexico	M5.5	89 km

Source: USGS (M2.5+, 1990–2025)

Hurricane History

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

Year	Name	Category	Closest
2025	Erick	Category 4	161 km
2024	John	Category 3	226 km
2022	Agatha	Category 2	99 km
2017	Max	Category 1	237 km
2013	Barbara	Category 1	289 km
2012	Carlotta	Category 2	98 km
2011	Hilary	Category 2	283 km
2010	Karl	Category 3	240 km
2005	Stan	Category 1	279 km
1998	Lester	Category 2	250 km
1997	Pauline	Category 4	119 km
1997	Rick	Category 2	95 km
1989	Cosme	Category 1	248 km

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

Tsunami History

6 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	120 km
1965	MEXICO	Earthquake	0.4 m	6	106 km
2022	S. MEXICO	Earthquake	0.2 m	—	100 km
1928	S. MEXICO	Earthquake	0.2 m	4	89 km
1968	ACAPULCO	Earthquake	—	18	116 km
1928	MEXICO	Earthquake	—	—	135 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	69°F (21°C)	0.3 in
March	72°F (22°C)	0.5 in
April	74°F (23°C)	1.7 in
May	74°F (24°C)	3.5 in	Warmest
June	72°F (22°C)	6.5 in	Wettest
July	69°F (21°C)	4.9 in
August	72°F (22°C)	4.8 in
September	71°F (22°C)	5.8 in
October	70°F (21°C)	2.2 in
November	69°F (20°C)	0.5 in
December	67°F (20°C)	0.1 in

San Dionisio Ocotlán has a seasonal temperature swing of 10°F / from 64°F in January to 74°F in May. Total annual precipitation is 30.8 inches, with June being the wettest month (6.5") and January the driest (0.1").

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