1. WeatherSpark.com
  2. El Salvador
  3. San Salvador

Average Weather in Mejicanos El Salvador

In Mejicanos, the wet season is warm, oppressive, and overcast and the dry season is hot, humid, and mostly clear. Over the course of the year, the temperature typically varies from 63°F to 88°F and is rarely below 59°F or above 91°F.

Based on the tourism score, the best time of year to visit Mejicanos for warm-weather activities is from early December to mid March.

Climate Summary

hotwarmJanFebMarAprMayJunJulAugSepOctNovDecNowNow79%79%7%7%clearovercastprecipitation: 5.7 inprecipitation: 5.7 in0.1 in0.1 inmuggy: 99%muggy: 99%27%27%tourism score: 7.5tourism score: 7.53.93.9
Click on each chart for more information.

Temperature

The temperature in Mejicanos varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature

Average High and Low Temperature in MejicanosJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1585°FJan 1585°FApr 188°FApr 188°F63°F63°F67°F67°FFeb 1887°FFeb 1887°FMay 187°FMay 187°FSep 483°FSep 483°FNov 1083°FNov 1083°F64°F64°F69°F69°F68°F68°F66°F66°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature

Average Hourly Temperature in MejicanosJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcoolcomfortablecomfortablewarmhotcool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Pirenópolis, Brazil (3,430 miles away) and Kampung Bukit Tinggi, Bentong; Malaysia (11,046 miles) are the far-away foreign places with temperatures most similar to Mejicanos (view comparison).

Clouds

In Mejicanos, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Mejicanos begins around November 15 and lasts for 5.0 months, ending around April 16. On January 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 79% of the time, and overcast or mostly cloudy 21% of the time.

The cloudier part of the year begins around April 16 and lasts for 7.0 months, ending around November 15. On June 5, the cloudiest day of the year, the sky is overcast or mostly cloudy 93% of the time, and clear, mostly clear, or partly cloudy 7% of the time.

Cloud Cover Categories

Cloud Cover Categories in MejicanosclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jan 1079%Jan 1079%Jun 57%Jun 57%Nov 1543%Nov 1543%Apr 1644%Apr 1644%NowNowclearmostly clearmostly cloudyovercastpartly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Mejicanos varies significantly throughout the year.

The wetter season lasts 5.4 months, from May 13 to October 26, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 47% on September 12.

The drier season lasts 6.6 months, from October 26 to May 13. The smallest chance of a wet day is 1% on January 8.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 47% on September 12.

Daily Chance of Precipitation

Daily Chance of Precipitation in MejicanoswetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Sep 1247%Sep 1247%Jan 81%Jan 81%Jan 12%Jan 12%May 1324%May 1324%Oct 2624%Oct 2624%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Mejicanos experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.5 months, from April 12 to November 27, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around September 20, with an average total accumulation of 5.7 inches.

The rainless period of the year lasts for 4.5 months, from November 27 to April 12. The least rain falls around February 15, with an average total accumulation of 0.1 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Mejicanos varies over the course of the year. In 2021, the shortest day is December 21, with 11 hours, 19 minutes of daylight; the longest day is June 20, with 12 hours, 56 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:28 AM on June 1, and the latest sunrise is 57 minutes later at 6:24 AM on January 22. The earliest sunset is at 5:25 PM on November 20, and the latest sunset is 1 hour, 3 minutes later at 6:28 PM on July 8.

Daylight saving time (DST) is not observed in Mejicanos during 2021.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in MejicanosJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 15:28 AMJun 15:28 AM6:28 PMJul 86:28 PMJul 8Nov 205:25 PMNov 205:25 PM6:24 AMJan 226:24 AMJan 22daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Moon

The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Mejicanos experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 9.0 months, from March 11 to December 13, during which time the comfort level is muggy, oppressive, or miserable at least 45% of the time. The muggiest day of the year is September 19, with muggy conditions 99% of the time.

The least muggy day of the year is January 15, with muggy conditions 27% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in MejicanosmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 1527%Jan 1527%99%Sep 1999%Sep 19Mar 1145%Mar 1145%Dec 1345%Dec 1345%NowNowoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Mejicanos experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.2 months, from November 2 to April 8, with average wind speeds of more than 7.2 miles per hour. The windiest day of the year is January 13, with an average hourly wind speed of 9.4 miles per hour.

The calmer time of year lasts for 6.8 months, from April 8 to November 2. The calmest day of the year is August 20, with an average hourly wind speed of 4.9 miles per hour.

Average Wind Speed

Average Wind Speed in MejicanoswindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphJan 139.4 mphJan 139.4 mphAug 204.9 mphAug 204.9 mphNov 27.2 mphNov 27.2 mphApr 87.2 mphApr 87.2 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Mejicanos varies throughout the year.

The wind is most often from the south for 2.5 months, from April 12 to June 26 and for 2.0 months, from August 10 to October 9, with a peak percentage of 39% on June 4. The wind is most often from the east for 1.5 months, from June 26 to August 10, with a peak percentage of 38% on July 15. The wind is most often from the north for 6.1 months, from October 9 to April 12, with a peak percentage of 68% on January 1.

Wind Direction

Wind Direction in MejicanosNSESNJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Mejicanos is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature does not vary significantly over the course of the year, remaining within 2°F of 84°F throughout.

Average Water Temperature

Average Water Temperature in MejicanosJanFebMarAprMayJunJulAugSepOctNovDec80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°F88°F88°FAug 886°FAug 886°F82°FJan 2582°FJan 25Apr 2985°FApr 2985°FSep 1185°FSep 1185°FJan 183°FJan 183°FMar 583°FMar 583°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Mejicanos throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Mejicanos for general outdoor tourist activities is from early December to mid March, with a peak score in the second week of January.

Tourism Score

Tourism Score in Mejicanosbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.57.53.93.94.54.54.24.2NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Mejicanos for hot-weather activities is from early February to late April, with a peak score in the last week of March.

Beach/Pool Score

Beach/Pool Score in Mejicanosbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.46.44.14.15.85.84.64.6NowNowprecipitationprecipitationcloudsclouds beach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Mejicanos are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in MejicanosJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 3100%Jul 3NowNowcoolcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Growing Degree Days

Growing Degree Days in MejicanosJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°F7,000°F7,000°F8,000°F8,000°F9,000°F9,000°FJan 590°FJan 590°FMar 191,800°FMar 191,800°FDec 318,856°FDec 318,856°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.0 months, from February 14 to April 12, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest day of the year is March 23, with an average of 6.9 kWh.

The darker period of the year lasts for 1.3 months, from May 16 to June 26, with an average daily incident shortwave energy per square meter below 5.0 kWh. The darkest day of the year is June 5, with an average of 4.5 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in MejicanosbrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhMar 236.9 kWhMar 236.9 kWhJun 54.5 kWhJun 54.5 kWhFeb 146.4 kWhFeb 146.4 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Mejicanos are 13.740 deg latitude, -89.213 deg longitude, and 2,372 ft elevation.

The topography within 2 miles of Mejicanos contains large variations in elevation, with a maximum elevation change of 2,159 feet and an average elevation above sea level of 2,430 feet. Within 10 miles contains large variations in elevation (5,272 feet). Within 50 miles also contains extreme variations in elevation (8,940 feet).

The area within 2 miles of Mejicanos is covered by artificial surfaces (46%), cropland (25%), trees (15%), and grassland (10%), within 10 miles by cropland (36%) and trees (31%), and within 50 miles by cropland (29%) and water (25%).

Data Sources

This report illustrates the typical weather in Mejicanos, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Mejicanos.

For each station, the records are corrected for the elevation difference between that station and Mejicanos according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Mejicanos is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Mejicanos and a given station.

The stations contributing to this reconstruction are: Ilopango International Airport (91%, 11 kilometers, southeast); Acajutla (6%, 70 kilometers, west); and Santa Rosa De Copan (3.7%, 125 kilometers, north).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.