Climate and Average Weather Year Round in Mazatlán Mexico
In Mazatlán, the wet season is hot, oppressive, and overcast and the dry season is warm and partly cloudy. Over the course of the year, the temperature typically varies from 55°F to 90°F and is rarely below 49°F or above 93°F.
Based on the beach/pool score, the best time of year to visit Mazatlán for hot-weather activities is from mid May to mid June.
Climate in Mazatlán
The hot season lasts for 4.6 months, from June 7 to October 28, with an average daily high temperature above 88°F. The hottest month of the year in Mazatlán is July, with an average high of 90°F and low of 77°F.
The cool season lasts for 3.5 months, from December 12 to March 28, with an average daily high temperature below 81°F. The coldest month of the year in Mazatlán is January, with an average low of 56°F and high of 79°F.
Average High and Low Temperature in Mazatlán
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 Mazatlán
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
Nova Iguaçu, Brazil (5,295 miles away); Behompy, Madagascar (10,563 miles); and Taichung, Taiwan (7,897 miles) are the far-away foreign places with temperatures most similar to Mazatlán (view comparison).
In Mazatlán, 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 Mazatlán begins around October 9 and lasts for 8.6 months, ending around June 27.
The clearest month of the year in Mazatlán is May, during which on average the sky is clear, mostly clear, or partly cloudy 70% of the time.
The cloudier part of the year begins around June 27 and lasts for 3.5 months, ending around October 9.
The cloudiest month of the year in Mazatlán is August, during which on average the sky is overcast or mostly cloudy 87% of the time.
Cloud Cover Categories in Mazatlán
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 Mazatlán varies very significantly throughout the year.
The wetter season lasts 3.2 months, from June 27 to October 1, with a greater than 35% chance of a given day being a wet day. The month with the most wet days in Mazatlán is August, with an average of 20.0 days with at least 0.04 inches of precipitation.
The drier season lasts 8.9 months, from October 1 to June 27. The month with the fewest wet days in Mazatlán is April, with an average of 0.4 days with at least 0.04 inches of precipitation.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Mazatlán is August, with an average of 20.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 68% on August 29.
Daily Chance of Precipitation in Mazatlán
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. Mazatlán experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 8.4 months, from May 31 to February 11, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Mazatlán is August, with an average rainfall of 6.6 inches.
The rainless period of the year lasts for 3.6 months, from February 11 to May 31. The month with the least rain in Mazatlán is April, with an average rainfall of 0.1 inches.
Average Monthly Rainfall in Mazatlán
The length of the day in Mazatlán varies over the course of the year. In 2023, the shortest day is December 21, with 10 hours, 42 minutes of daylight; the longest day is June 21, with 13 hours, 34 minutes of daylight.
Hours of Daylight and Twilight in Mazatlán
The earliest sunrise is at 5:58 AM on April 1, and the latest sunrise is 1 hour, 11 minutes later at 7:08 AM on October 28. The earliest sunset is at 5:18 PM on November 28, and the latest sunset is 2 hours, 37 minutes later at 7:55 PM on July 4.
Daylight saving time (DST) is observed in Mazatlán during 2023, starting in the spring on April 2, lasting 6.8 months, and ending in the fall on October 29.
Sunrise & Sunset with Twilight and Daylight Saving Time in Mazatlán
The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.
Solar Elevation and Azimuth in Mazatlán
The figure below presents a compact representation of key lunar data for 2023. 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 Mazatlán
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.
Mazatlán experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 6.7 months, from May 6 to November 27, during which time the comfort level is muggy, oppressive, or miserable at least 28% of the time. The month with the most muggy days in Mazatlán is August, with 30.5 days that are muggy or worse.
The month with the fewest muggy days in Mazatlán is February, with 1.3 days that are muggy or worse.
Humidity Comfort Levels in Mazatlán
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 Mazatlán experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.8 months, from February 9 to July 2, with average wind speeds of more than 6.0 miles per hour. The windiest month of the year in Mazatlán is May, with an average hourly wind speed of 6.5 miles per hour.
The calmer time of year lasts for 7.2 months, from July 2 to February 9. The calmest month of the year in Mazatlán is August, with an average hourly wind speed of 5.4 miles per hour.
Average Wind Speed in Mazatlán
The predominant average hourly wind direction in Mazatlán varies throughout the year.
The wind is most often from the west for 8.3 months, from February 11 to October 19, with a peak percentage of 65% on June 1. The wind is most often from the north for 3.7 months, from October 19 to February 11, with a peak percentage of 46% on January 1.
Wind Direction in Mazatlán
Mazatlán 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 4.3 months, from June 24 to November 3, with an average temperature above 83°F. The month of the year in Mazatlán with the warmest water is August, with an average temperature of 86°F.
The time of year with cooler water lasts for 3.8 months, from December 30 to April 23, with an average temperature below 75°F. The month of the year in Mazatlán with the coolest water is March, with an average temperature of 72°F.
Average Water Temperature in Mazatlán
To characterize how pleasant the weather is in Mazatlán 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 times of year to visit Mazatlán for general outdoor tourist activities are from early February to early June and from early November to late December, with a peak score in the second week of May.
Tourism Score in Mazatlán
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 Mazatlán 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 Mazatlán
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 Mazatlán 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 Mazatlán
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 Mazatlán
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 9 to June 20, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest month of the year in Mazatlán is May, with an average of 7.5 kWh.
The darker period of the year lasts for 2.5 months, from November 13 to January 30, with an average daily incident shortwave energy per square meter below 4.7 kWh. The darkest month of the year in Mazatlán is December, with an average of 4.0 kWh.
Average Daily Incident Shortwave Solar Energy in Mazatlán
For the purposes of this report, the geographical coordinates of Mazatlán are 23.233 deg latitude, -106.406 deg longitude, and 33 ft elevation.
The topography within 2 miles of Mazatlán contains only modest variations in elevation, with a maximum elevation change of 344 feet and an average elevation above sea level of 35 feet. Within 10 miles contains only modest variations in elevation (1,024 feet). Within 50 miles contains very significant variations in elevation (8,619 feet).
The area within 2 miles of Mazatlán is covered by artificial surfaces (61%), water (15%), and shrubs (10%), within 10 miles by water (45%) and cropland (31%), and within 50 miles by water (51%) and trees (35%).
This report illustrates the typical weather in Mazatlán, 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 is only a single weather station, General Rafael Buelna International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Mazatlán.
At a distance of 16 kilometers from Mazatlán, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Mazatlán according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
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 © OpenStreetMap contributors.
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.
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