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Weather & Climate in San Jerónimo, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Jerónimo has a warm climate with an average annual temperature of 73°F (23°C). Winters average 70°F in January while summers reach 73°F in July / relatively mild seasonal variation. The area gets 358 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 47.6 inches (wetter than the 38-inch national average). The city sits at an elevation of 2,858 feet.
Temperature
70°F Jan (21°C)
73°F Jul (23°C)
| Annual Average | 73.1°F |
| 35% above US avg | |
| January Average | 70°F (21°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 358 days/yr |
Geography
| Elevation | 2,858 ft (871 m) |
| Area | 580.9 sq mi (1,504.4 km²) |
| Population Density | 1/sq mi |
| Coordinates | 16.8778°N, 98.3611°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
2,590 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.4.
| Sep 14, 1995 | 5 km N of Azoyú, Mexico | M7.4 | 27 km | 23 km |
| Mar 20, 2012 | 6 km E of Santiago Llano Grande, Mexico | M7.4 | 45 km | 20 km |
| Feb 16, 2018 | 4 km S of Pinotepa de Don Luis, Mexico | M7.2 | 68 km | 22 km |
| Feb 25, 1996 | 24 km SSW of Santa María Chico Ometepec, Mexico | M7.1 | 105 km | 21 km |
| Jul 19, 1997 | 4 km ENE of El Ciruelo, Mexico | M6.9 | 63 km | 33 km |
| Oct 24, 1993 | 1 km ENE of Jolotichán, Mexico | M6.7 | 40 km | 21 km |
| Jun 30, 2010 | 2 km ESE of San Agustín Chayuco, Mexico | M6.3 | 82 km | 20 km |
| Aug 21, 2013 | 5 km ESE of Barrio Nuevo de los Muertos, Mexico | M6.2 | 121 km | 21 km |
| Feb 25, 1996 | 7 km SE of Santa María Chico Ometepec, Mexico | M6.2 | 96 km | 12 km |
| May 15, 1993 | 1 km ENE of Ometepec, Mexico | M6.1 | 20 km | 21 km |
| May 15, 1993 | 2 km SSW of Ometepec, Mexico | M6.0 | 24 km | 20 km |
| Dec 16, 1997 | 46 km SSW of Barra de Tecoanapa, Mexico | M6.0 | 100 km | 10 km |
| Nov 13, 1993 | 18 km SW of Montecillos, Mexico | M6.0 | 72 km | 20 km |
| Apr 2, 2012 | 7 km SSW of Santa María Cortijo, Mexico | M6.0 | 54 km | 9 km |
| Feb 19, 2018 | 4 km SSE of Santiago Tetepec, Mexico | M5.9 | 94 km | 22 km |
| Jun 14, 2004 | 0 km W of Santa Catarina Mechoacán, Mexico | M5.9 | 82 km | 10 km |
| Apr 27, 2009 | 2 km WNW of Pochotillo, Mexico | M5.8 | 117 km | 35 km |
| Feb 17, 2018 | 8 km SE of José María Morelos, Mexico | M5.8 | 96 km | 3 km |
| Mar 10, 2014 | 26 km SW of Corralero, Mexico | M5.8 | 93 km | 8 km |
| Apr 1, 1991 | 11 km SW of Corralero, Mexico | M5.8 | 79 km | 21 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
17 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 | 53 km |
| 2024 | John | Category 3 | 121 mph | 65 km |
| 2023 | Otis | Category 5 | 167 mph | 154 km |
| 2022 | Agatha | Category 2 | 109 mph | 224 km |
| 2017 | Max | Category 1 | 92 mph | 61 km |
| 2015 | Carlos | Category 1 | 86 mph | 229 km |
| 2012 | Carlotta | Category 2 | 109 mph | 65 km |
| 2011 | Hilary | Category 3 | 121 mph | 189 km |
| 2010 | Karl | Category 3 | 127 mph | 279 km |
| 2006 | John | Category 3 | 121 mph | 281 km |
| 1998 | Lester | Category 2 | 104 mph | 280 km |
| 1997 | Pauline | Category 4 | 132 mph | 54 km |
| 1997 | Rick | Category 2 | 98 mph | 132 km |
| 1996 | Boris | Category 1 | 92 mph | 224 km |
| 1993 | Calvin | Category 2 | 98 mph | 273 km |
| 1989 | Cosme | Category 1 | 86 mph | 68 km |
| 1984 | Odile | Category 2 | 104 mph | 255 km |
Source: NOAA IBTrACS (Category 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 | — | 137 km |
| 1787 | SAN MARCOS | Earthquake | 4.0 m | 11 | 45 km |
| 1754 | S. MEXICO | Earthquake | 4.0 m | — | 90 km |
| 1957 | S. MEXICO | Earthquake | 1.3 m | 65 | 89 km |
| 1962 | S. MEXICO | Earthquake | 0.8 m | 4 | 137 km |
| 1995 | S. MEXICO | Earthquake | 0.4 m | 3 | 27 km |
| 1962 | S. MEXICO | Earthquake | 0.3 m | 3 | 126 km |
| 1950 | S. MEXICO | Earthquake | 0.3 m | — | 47 km |
| 2012 | S. MEXICO | Earthquake | 0.2 m | 2 | 45 km |
| 1996 | MEXICO | Earthquake | 0.1 m | — | 105 km |
| 2026 | ACAPULCO | Earthquake | 0.1 m | 2 | 100 km |
| 1968 | ACAPULCO | Earthquake | — | 18 | 77 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 70°F (21°C) | 0.4 in | Coldest |
| February | 74°F (23°C) | 0.2 in | Driest |
| March | 77°F (25°C) | 0.2 in | |
| April | 79°F (26°C) | 0.3 in | |
| May | 80°F (27°C) | 2.9 in | Warmest |
| June | 79°F (26°C) | 12.4 in | |
| July | 73°F (23°C) | 12.4 in | |
| August | 78°F (25°C) | 12.3 in | |
| September | 77°F (25°C) | 14.6 in | Wettest |
| October | 77°F (25°C) | 6.4 in | |
| November | 75°F (24°C) | 1.1 in | |
| December | 74°F (23°C) | 0.3 in |
San Jerónimo has a seasonal temperature swing of 10°F / from 70°F in January to 80°F in May. Total annual precipitation is 63.2 inches, with September being the wettest month (14.6") and February the driest (0.2").