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Weather & Climate in Lerma, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Lerma has a warm climate with an average annual temperature of 80°F (26°C). Winters average 74°F in January while summers reach 82°F in July / relatively mild seasonal variation. The area gets 251 sunny days per year, above the national average. Annual precipitation totals 46.6 inches (wetter than the 38-inch national average). The city sits at an elevation of 26 feet.
Temperature
74°F Jan (23°C)
82°F Jul (28°C)
| Annual Average | 79.5°F |
| 47% above US avg | |
| January Average | 74°F (23°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 251 days/yr |
Geography
| Elevation | 26 ft (8 m) |
| Area | 299.6 sq mi (775.9 km²) |
| Population Density | 28/sq mi |
| Coordinates | 19.8040°N, 90.6009°W |
| Timezone | America/Merida |
Precipitation & Snow
Air Quality
Earthquake History
3 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.3.
| Mar 14, 1996 | Gulf of America | M4.3 | 150 km | 33 km |
| Sep 23, 1997 | Gulf of America | M4.1 | 123 km | 10 km |
| Mar 18, 1997 | Bay of Campeche | M3.9 | 146 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
14 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Milton | Category 5 | 178 mph | 222 km |
| 2024 | Beryl | Category 1 | - | 270 km |
| 2021 | Grace | Category 1 | - | 285 km |
| 2020 | Delta | Category 1 | 92 mph | 270 km |
| 2020 | Zeta | Category 1 | 75 mph | 295 km |
| 2012 | Ernesto | Category 1 | 92 mph | 202 km |
| 2011 | Nate | Category 1 | 75 mph | 157 km |
| 2010 | Karl | Category 1 | 81 mph | 284 km |
| 2007 | Dean | Category 5 | 127 mph | 68 km |
| 2005 | Emily | Category 2 | 75 mph | 235 km |
| 2002 | Isidore | Category 3 | 127 mph | 118 km |
| 1995 | Roxanne | Category 3 | 104 mph | 31 km |
| 1995 | Opal | Category 1 | 86 mph | 222 km |
| 1988 | Gilbert | Category 4 | 150 mph | 193 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 74°F (23°C) | 1.1 in | Coldest |
| February | 75°F (24°C) | 0.8 in | |
| March | 79°F (26°C) | 0.7 in | |
| April | 82°F (28°C) | 0.6 in | Driest |
| May | 84°F (29°C) | 2.4 in | Warmest |
| June | 83°F (29°C) | 7.1 in | |
| July | 82°F (28°C) | 7.2 in | |
| August | 82°F (28°C) | 8.6 in | |
| September | 81°F (27°C) | 9.1 in | Wettest |
| October | 80°F (26°C) | 5.5 in | |
| November | 77°F (25°C) | 2.1 in | |
| December | 75°F (24°C) | 1.3 in |
Lerma has a seasonal temperature swing of 11°F / from 74°F in January to 84°F in May. Total annual precipitation is 46.6 inches, with September being the wettest month (9.1") and April the driest (0.6").