Climate and Average Weather Year Round in El Rosario Mexico
In El Rosario, the wet season is hot, oppressive, and mostly cloudy and the dry season is warm and partly cloudy. Over the course of the year, the temperature typically varies from 56°F to 93°F and is rarely below 50°F or above 97°F.
Based on the beach/pool score, the best time of year to visit El Rosario for hot-weather activities is from mid May to mid June.
Climate in El Rosario
Average Temperature in El Rosario
The hot season lasts for 4.7 months, from June 4 to October 26, with an average daily high temperature above 90°F. The hottest day of the year is July 24, with an average high of 93°F and low of 78°F.
The cool season lasts for 3.1 months, from December 7 to March 12, with an average daily high temperature below 82°F. The coldest day of the year is January 23, with an average low of 56°F and high of 80°F.
Average High and Low Temperature in El Rosario
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 in El Rosario
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
Al Wajh, Saudi Arabia (8,195 miles away); Port Hedland, Australia (9,520 miles); and Yujing, Taiwan (7,872 miles) are the far-away foreign places with temperatures most similar to El Rosario (view comparison).
In El Rosario, 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 El Rosario begins around October 4 and lasts for 8.8 months, ending around June 29. On June 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 81% of the time, and overcast or mostly cloudy 19% of the time.
The cloudier part of the year begins around June 29 and lasts for 3.2 months, ending around October 4. On August 21, the cloudiest day of the year, the sky is overcast or mostly cloudy 84% of the time, and clear, mostly clear, or partly cloudy 16% of the time.
Cloud Cover Categories in El Rosario
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in El Rosario varies very significantly throughout the year.
The wetter season lasts 3.0 months, from June 26 to September 26, with a greater than 31% chance of a given day being a wet day. The chance of a wet day peaks at 60% on August 20.
The drier season lasts 9.0 months, from September 26 to June 26. The smallest chance of a wet day is 2% on April 25.
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 60% on August 20.
Daily Chance of Precipitation in El Rosario
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. El Rosario experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 8.3 months, from June 4 to February 14, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 27, with an average total accumulation of 5.8 inches.
The rainless period of the year lasts for 3.7 months, from February 14 to June 4. The least rain falls around April 3, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall in El Rosario
The length of the day in El Rosario varies over the course of the year. In 2021, the shortest day is December 21, with 10 hours, 38 minutes of daylight; the longest day is June 20, with 13 hours, 38 minutes of daylight.
Hours of Daylight and Twilight in El Rosario
The earliest sunrise is at 5:58 AM on April 3, and the latest sunrise is 1 hour, 16 minutes later at 7:14 AM on October 30. The earliest sunset is at 5:20 PM on November 28, and the latest sunset is 2 hours, 41 minutes later at 8:00 PM on July 2.
Daylight saving time (DST) is observed in El Rosario during 2021, starting in the spring on April 4, lasting 6.8 months, and ending in the fall on October 31.
Sunrise & Sunset with Twilight and Daylight Saving Time in El Rosario
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 in El Rosario
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.
El Rosario experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 7.0 months, from April 29 to November 29, during which time the comfort level is muggy, oppressive, or miserable at least 30% of the time. The muggiest day of the year is August 18, with muggy conditions 100% of the time.
The least muggy day of the year is January 25, with muggy conditions 7% of the time.
Humidity Comfort Levels in El Rosario
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 El Rosario experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.4 months, from November 23 to July 5, with average wind speeds of more than 6.1 miles per hour. The windiest day of the year is June 6, with an average hourly wind speed of 7.0 miles per hour.
The calmer time of year lasts for 4.6 months, from July 5 to November 23. The calmest day of the year is August 6, with an average hourly wind speed of 5.2 miles per hour.
Average Wind Speed in El Rosario
The predominant average hourly wind direction in El Rosario varies throughout the year.
The wind is most often from the west for 8.2 months, from February 17 to October 24, with a peak percentage of 54% on June 2. The wind is most often from the north for 3.8 months, from October 24 to February 17, with a peak percentage of 47% on January 1.
Wind Direction in El Rosario
El Rosario 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 experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 4.2 months, from June 24 to October 30, with an average temperature above 83°F. The day of the year with the warmest water is August 16, with an average temperature of 86°F.
The time of year with cooler water lasts for 3.9 months, from December 25 to April 21, with an average temperature below 73°F. The day of the year with the coolest water is February 19, with an average temperature of 70°F.
Average Water Temperature in El Rosario
Best Time of Year to Visit
To characterize how pleasant the weather is in El Rosario 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 El Rosario for general outdoor tourist activities is from late October to early June, with a peak score in the third week of March.
Tourism Score in El Rosario
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 El Rosario for hot-weather activities is from mid May to mid June, with a peak score in the first week of June.
Beach/Pool Score in El Rosario
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.
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 El Rosario 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 in El Rosario
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
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 in El Rosario
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 significant seasonal variation over the course of the year.
The brighter period of the year lasts for 2.4 months, from April 11 to June 23, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest day of the year is June 2, with an average of 7.7 kWh.
The darker period of the year lasts for 2.6 months, from November 13 to February 1, with an average daily incident shortwave energy per square meter below 4.7 kWh. The darkest day of the year is December 18, with an average of 3.9 kWh.
Average Daily Incident Shortwave Solar Energy in El Rosario
For the purposes of this report, the geographical coordinates of El Rosario are 24.256 deg latitude, -107.183 deg longitude, and 56 ft elevation.
The topography within 2 miles of El Rosario is essentially flat, with a maximum elevation change of 82 feet and an average elevation above sea level of 56 feet. Within 10 miles is essentially flat (1,759 feet). Within 50 miles contains very significant variations in elevation (7,392 feet).
The area within 2 miles of El Rosario is covered by cropland (100%), within 10 miles by cropland (72%) and trees (14%), and within 50 miles by water (39%) and trees (37%).
This report illustrates the typical weather in El Rosario, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in El Rosario.
For each station, the records are corrected for the elevation difference between that station and El Rosario 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 El Rosario is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between El Rosario and a given station.
The stations contributing to this reconstruction are: Federal de Bachigualato International Airport (MMCL, 79%, 64 kilometers, northwest) and General Rafael Buelna International Airport (MMMZ, 21%, 154 kilometers, southeast).
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.
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.