Average Weather in May in San Luis Acatlán Mexico
Daily high temperatures are around 91°F, rarely falling below 86°F or exceeding 95°F. The highest daily average high temperature is 92°F on May 11.
Daily low temperatures increase by 3°F, from 70°F to 73°F, rarely falling below 65°F or exceeding 76°F.
For reference, on May 8, the hottest day of the year, temperatures in San Luis Acatlán typically range from 71°F to 92°F, while on January 25, the coldest day of the year, they range from 64°F to 88°F.
Average High and Low Temperature in May
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. The horizontal axis is the day, 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 May
The month of May in San Luis Acatlán experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 46% to 74%.
The clearest day of the month is May 1, with clear, mostly clear, or partly cloudy conditions 54% of the time.
For reference, on June 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on February 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in May
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. In San Luis Acatlán, the chance of a wet day over the course of May is very rapidly increasing, starting the month at 10% and ending it at 42%.
For reference, the year's highest daily chance of a wet day is 70% on September 12, and its lowest chance is 1% on December 8.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in San Luis Acatlán is very rapidly increasing, starting the month at 0.8 inches, when it rarely exceeds 2.0 inches, and ending the month at 4.4 inches, when it rarely exceeds 8.0 inches or falls below 1.1 inches.
Average Monthly Rainfall in May
Over the course of May in San Luis Acatlán, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 19 minutes, implying an average daily increase of 37 seconds, and weekly increase of 4 minutes, 21 seconds.
The shortest day of the month is May 1, with 12 hours, 45 minutes of daylight and the longest day is May 31, with 13 hours, 4 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in San Luis Acatlán is 7:09 AM on May 1 and the earliest sunrise is 9 minutes earlier at 7:00 AM on May 31.
The earliest sunset is 7:54 PM on May 1 and the latest sunset is 10 minutes later at 8:04 PM on May 31.
Daylight saving time is observed in San Luis Acatlán during 2021, but it neither starts nor ends during May, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 7:02 AM and sets 13 hours, 8 minutes later, at 8:10 PM, while on December 21, the shortest day of the year, it rises at 6:59 AM and sets 11 hours, 8 minutes later, at 6:07 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in May
The figure below presents a compact representation of key lunar data for May 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
Moon Rise, Set & Phases in May
The chance that a given day will be muggy in San Luis Acatlán is very rapidly increasing during May, rising from 62% to 90% over the course of the month.
For reference, on September 12, the muggiest day of the year, there are muggy conditions 99% of the time, while on January 26, the least muggy day of the year, there are muggy conditions 35% of the time.
Humidity Comfort Levels in May
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in San Luis Acatlán is essentially constant during May, remaining within 0.1 miles per hour of 5.9 miles per hour throughout.
For reference, on March 31, the windiest day of the year, the daily average wind speed is 6.2 miles per hour, while on October 25, the calmest day of the year, the daily average wind speed is 4.8 miles per hour.
Average Wind Speed in May
The hourly average wind direction in San Luis Acatlán throughout May is predominantly from the south, with a peak proportion of 47% on May 31.
Wind Direction in May
San Luis Acatlán 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 surface water temperature in San Luis Acatlán is gradually increasing during May, rising by 2°F, from 83°F to 85°F, over the course of the month.
Average Water Temperature in May
Temperatures in San Luis Acatlán 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 May
The average accumulated growing degree days in San Luis Acatlán are rapidly increasing during May, increasing by 887°F, from 3,137°F to 4,025°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in San Luis Acatlán is decreasing during May, falling by 1.1 kWh, from 6.7 kWh to 5.6 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of San Luis Acatlán are 16.809 deg latitude, -98.733 deg longitude, and 958 ft elevation.
The topography within 2 miles of San Luis Acatlán contains very significant variations in elevation, with a maximum elevation change of 1,158 feet and an average elevation above sea level of 1,012 feet. Within 10 miles contains very significant variations in elevation (5,761 feet). Within 50 miles also contains extreme variations in elevation (9,839 feet).
The area within 2 miles of San Luis Acatlán is covered by cropland (97%), within 10 miles by cropland (57%) and trees (41%), and within 50 miles by cropland (35%) and trees (34%).
This report illustrates the typical weather in San Luis Acatlán, 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 Juan N. Álvarez International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of San Luis Acatlán.
At a distance of 109 kilometers from San Luis Acatlán, 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 San Luis Acatlán 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.
Time zones for airports and weather stations are provided by AskGeo.com .