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Weather & Climate in Kilómetro 42 (Juan N. Álvarez), Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Kilómetro 42 (Juan N. Álvarez) has a warm climate with an average annual temperature of 80°F (27°C). Winters average 77°F in January while summers reach 82°F in July / relatively mild seasonal variation. The area gets 353 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 48.7 inches (wetter than the 38-inch national average). The city sits at an elevation of 1,394 feet.
Temperature
77°F Jan (25°C)
82°F Jul (28°C)
| Annual Average | 80.1°F |
| 48% above US avg | |
| January Average | 77°F (25°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 353 days/yr |
Geography
| Elevation | 1,394 ft (425 m) |
| Area | 865.1 sq mi (2,240.7 km²) |
| Population Density | 1/sq mi |
| Coordinates | 17.0550°N, 99.7597°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
2,608 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 | 127 km | 23 km |
| Apr 18, 2014 | 9 km ENE of Coyuquilla Norte, Mexico | M7.2 | 134 km | 24 km |
| Apr 18, 2002 | 27 km SSW of Nuxco, Mexico | M6.8 | 118 km | 25 km |
| Jul 15, 1996 | 26 km NNE of Coyuquilla Norte, Mexico | M6.8 | 142 km | 18 km |
| Oct 24, 1993 | 1 km ENE of Jolotichán, Mexico | M6.7 | 116 km | 21 km |
| May 8, 2014 | 3 km NNE of Nuxco, Mexico | M6.4 | 107 km | 17 km |
| May 23, 1994 | 4 km W of San Cristóbal, Mexico | M6.3 | 148 km | 55 km |
| Aug 21, 2013 | 5 km ESE of Barrio Nuevo de los Muertos, Mexico | M6.2 | 34 km | 21 km |
| Nov 13, 1993 | 18 km SW of Montecillos, Mexico | M6.0 | 147 km | 20 km |
| Dec 16, 1997 | 46 km SSW of Barra de Tecoanapa, Mexico | M6.0 | 143 km | 10 km |
| May 10, 2014 | 6 km W of Nuxco, Mexico | M6.0 | 113 km | 23 km |
| May 15, 1993 | 2 km SSW of Ometepec, Mexico | M6.0 | 149 km | 20 km |
| Apr 13, 2007 | 5 km SE of El Paraíso, Mexico | M6.0 | 54 km | 34 km |
| May 31, 1990 | 7 km NE of Nuxco, Mexico | M6.0 | 103 km | 23 km |
| Oct 8, 2001 | 3 km WSW of Tixtlancingo, Mexico | M5.9 | 25 km | 10 km |
| Jun 16, 2013 | 5 km N of Tequicuilco, Mexico | M5.8 | 136 km | 52 km |
| Apr 27, 2009 | 2 km WNW of Pochotillo, Mexico | M5.8 | 33 km | 35 km |
| Apr 28, 2008 | 21 km WNW of Tlacotepec, Mexico | M5.8 | 98 km | 57 km |
| May 5, 2011 | 2 km SE of Cuanacaxtitlán, Mexico | M5.7 | 125 km | 24 km |
| Mar 20, 2021 | 6 km NNW of Marquelia, Mexico | M5.7 | 108 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
25 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 | 49 km |
| 2024 | John | Category 3 | 121 mph | 28 km |
| 2023 | Otis | Category 5 | 167 mph | 32 km |
| 2023 | Beatriz | Category 1 | 81 mph | 219 km |
| 2021 | Rick | Category 2 | 104 mph | 195 km |
| 2017 | Max | Category 1 | 92 mph | 62 km |
| 2015 | Marty | Category 1 | 81 mph | 257 km |
| 2015 | Carlos | Category 1 | 86 mph | 124 km |
| 2013 | Raymond | Category 3 | 127 mph | 233 km |
| 2012 | Carlotta | Category 1 | 81 mph | 207 km |
| 2011 | Hilary | Category 4 | 138 mph | 141 km |
| 2006 | John | Category 4 | 132 mph | 223 km |
| 2000 | Carlotta | Category 2 | 98 mph | 288 km |
| 1997 | Rick | Category 2 | 98 mph | 183 km |
| 1997 | Pauline | Category 2 | 109 mph | 9 km |
| 1996 | Alma | Category 2 | 104 mph | 299 km |
| 1996 | Hernan | Category 1 | 75 mph | 271 km |
| 1996 | Boris | Category 1 | 92 mph | 122 km |
| 1993 | Lidia | Category 2 | 92 mph | 300 km |
| 1993 | Calvin | Category 2 | 104 mph | 192 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
17 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 | — | 23 km |
| 1787 | SAN MARCOS | Earthquake | 4.0 m | 11 | 148 km |
| 1754 | S. MEXICO | Earthquake | 4.0 m | — | 66 km |
| 1732 | S. MEXICO | Earthquake | 3.0 m | — | 32 km |
| 1907 | S. MEXICO | Earthquake | 2.0 m | 8 | 26 km |
| 1957 | S. MEXICO | Earthquake | 1.3 m | 65 | 94 km |
| 1962 | S. MEXICO | Earthquake | 0.8 m | 4 | 23 km |
| 2021 | S. MEXICO | Earthquake | 0.5 m | 3 | 8 km |
| 2014 | S. MEXICO | Earthquake | 0.4 m | — | 134 km |
| 1995 | S. MEXICO | Earthquake | 0.4 m | 3 | 127 km |
| 1962 | S. MEXICO | Earthquake | 0.3 m | 3 | 32 km |
| 2026 | ACAPULCO | Earthquake | 0.1 m | 2 | 52 km |
| 2002 | S. MEXICO | Earthquake | — | — | 118 km |
| 1933 | MEXICO | Earthquake | — | — | 128 km |
| 1868 | S. MEXICO | Earthquake | — | — | 32 km |
| 1845 | S. MEXICO | Earthquake | — | — | 90 km |
| 1833 | S. MEXICO | Earthquake | — | — | 32 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 77°F (25°C) | 0.6 in | |
| February | 75°F (24°C) | 0.3 in | |
| March | 77°F (25°C) | 0.1 in | Driest |
| April | 79°F (26°C) | 0.2 in | |
| May | 80°F (26°C) | 1.9 in | |
| June | 79°F (26°C) | 11.9 in | |
| July | 82°F (28°C) | 11.2 in | Warmest |
| August | 78°F (25°C) | 12.3 in | |
| September | 77°F (25°C) | 13.2 in | Wettest |
| October | 77°F (25°C) | 5.9 in | |
| November | 75°F (24°C) | 1.3 in | |
| December | 74°F (23°C) | 0.4 in | Coldest |
Kilómetro 42 (Juan N. Álvarez) has a seasonal temperature swing of 8°F / from 74°F in December to 82°F in July. Total annual precipitation is 59.3 inches, with September being the wettest month (13.2") and March the driest (0.1").