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Weather & Climate in 20 de Noviembre (El Morro), Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
20 de Noviembre (El Morro) has a warm climate with an average annual temperature of 82°F (28°C). Winters average 79°F in January while summers reach 84°F in July / relatively mild seasonal variation. The area gets 254 sunny days per year, above the national average. Annual precipitation totals 45.2 inches. The city sits at an elevation of 36 feet.
Temperature
79°F Jan (26°C)
84°F Jul (29°C)
| Annual Average | 82.3°F |
| 52% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 254 days/yr |
Geography
| Elevation | 36 ft (11 m) |
| Area | 904.1 sq mi (2,341.6 km²) |
| Population Density | 1/sq mi |
| Coordinates | 16.2897°N, 94.4806°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
2,921 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.2.
| Oct 21, 1995 | 13 km NW of Ocozocoautla de Espinosa, Mexico | M7.2 | 124 km | 159 km |
| Apr 7, 2011 | 7 km SW of Helio García Alfaro, Mexico | M6.6 | 103 km | 166 km |
| Sep 30, 1993 | 90 km S of San Francisco del Mar Viejo, Mexico | M6.5 | 100 km | 19 km |
| Feb 12, 2008 | 9 km SSW of General Pascual Fentes, Mexico | M6.5 | 20 km | 83 km |
| Jun 7, 1998 | 2 km NNE of Cabeza de Toro, Mexico | M6.3 | 84 km | 87 km |
| Jul 6, 2007 | 6 km N of Lázaro Cárdenas, Mexico | M6.1 | 53 km | 113 km |
| Sep 23, 2017 | 7 km NNE of Ixtepec, Mexico | M6.1 | 74 km | 10 km |
| Aug 7, 2004 | 17 km WNW of Palomares, Mexico | M5.9 | 128 km | 101 km |
| Aug 18, 2004 | 8 km E of Juchitán de Zaragoza, Mexico | M5.9 | 52 km | 63 km |
| Jan 5, 2020 | 3 km W of Reforma de Pineda, Mexico | M5.9 | 12 km | 87 km |
| Jun 27, 2006 | 108 km SSW of Manuel Ávila Camacho (Ponte Duro), Mexico | M5.8 | 150 km | 9 km |
| Aug 9, 2023 | 7 km NNE of Tonalá, Mexico | M5.8 | 82 km | 103 km |
| May 21, 2014 | 2 km SSW of Palomares, Mexico | M5.8 | 112 km | 120 km |
| Sep 10, 2017 | 92 km S of San Francisco del Mar Viejo, Mexico | M5.8 | 99 km | 29 km |
| Sep 24, 2017 | 80 km SSW of Cabeza de Toro, Mexico | M5.8 | 114 km | 47 km |
| Sep 23, 2017 | 80 km SSW of La Gloria, Mexico | M5.8 | 89 km | 54 km |
| Mar 2, 2023 | Oaxaca, Mexico | M5.7 | 8 km | 96 km |
| Sep 8, 2017 | 100 km SSW of Cabeza de Toro, Mexico | M5.7 | 125 km | 36 km |
| Aug 5, 2015 | 11 km ENE of Tonalá, Mexico | M5.7 | 89 km | 101 km |
| May 20, 2017 | 21 km SE of La Horqueta (Poblado Doce), Mexico | M5.7 | 95 km | 144 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
8 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Erick | Category 4 | 127 mph | 293 km |
| 2022 | Agatha | Category 2 | 104 mph | 210 km |
| 2013 | Barbara | Category 1 | 81 mph | 61 km |
| 2012 | Carlotta | Category 2 | 109 mph | 249 km |
| 2005 | Stan | Category 1 | 81 mph | 261 km |
| 1998 | Lester | Category 2 | 98 mph | 215 km |
| 1997 | Pauline | Category 4 | 132 mph | 224 km |
| 1997 | Rick | Category 1 | 86 mph | 168 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
2 tsunamis recorded within 500 km. Highest wave on record: 0.4 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1965 | MEXICO | Earthquake | 0.4 m | 6 | 141 km |
| 2025 | OFF COAST OF OAXACA | Earthquake | 0.2 m | — | 83 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Chichon, El (179 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Chichon, El | Lava dome(s) | 1,150 m (3,773 ft) | 1982 | 179 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 79°F (26°C) | 0.0 in | Coldest, Driest |
| February | 80°F (27°C) | 0.2 in | |
| March | 82°F (28°C) | 0.1 in | |
| April | 85°F (29°C) | 0.4 in | |
| May | 86°F (30°C) | 4.4 in | Warmest |
| June | 84°F (29°C) | 9.0 in | |
| July | 84°F (29°C) | 6.5 in | |
| August | 84°F (29°C) | 10.2 in | |
| September | 82°F (28°C) | 11.3 in | Wettest |
| October | 82°F (28°C) | 2.7 in | |
| November | 81°F (27°C) | 0.5 in | |
| December | 79°F (26°C) | 0.0 in |
20 de Noviembre (El Morro) has a seasonal temperature swing of 7°F / from 79°F in January to 86°F in May. Total annual precipitation is 45.3 inches, with September being the wettest month (11.3") and January the driest (0.0").