May Weather in José María Morelos (San José) Mexico

Daily high temperatures are around 74°F, rarely falling below 68°F or exceeding 81°F. The highest daily average high temperature is 75°F on May 9.

Daily low temperatures are around 51°F, rarely falling below 45°F or exceeding 55°F.

For reference, on May 8, the hottest day of the year, temperatures in José María Morelos (San José) typically range from 51°F to 75°F, while on January 12, the coldest day of the year, they range from 40°F to 66°F.

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.

Arani, Bolivia (3,406 miles away) is the far-away foreign place with temperatures most similar to José María Morelos (San José) (view comparison).

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The month of May in José María Morelos (San José) experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 45% to 60%.

The clearest day of the month is May 1, with clear, mostly clear, or partly cloudy conditions 55% of the time.

For reference, on September 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 88%, while on February 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In José María Morelos (San José), the chance of a wet day over the course of May is very rapidly increasing, starting the month at 28% and ending it at 47%.

For reference, the year's highest daily chance of a wet day is 81% on July 3, and its lowest chance is 5% on December 25.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during May in José María Morelos (San José) is very rapidly increasing, starting the month at 1.3 inches, when it rarely exceeds 2.5 inches or falls below 0.3 inches, and ending the month at 3.4 inches, when it rarely exceeds 6.1 inches or falls below 1.3 inches.

Over the course of May in José María Morelos (San José), the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 22 minutes, implying an average daily increase of 44 seconds, and weekly increase of 5 minutes, 7 seconds.

The shortest day of the month is May 1, with 12 hours, 53 minutes of daylight and the longest day is May 31, with 13 hours, 14 minutes of daylight.

The latest sunrise of the month in José María Morelos (San José) is 6:05 AM on May 1 and the earliest sunrise is 10 minutes earlier at 5:54 AM on May 31.

The earliest sunset is 6:57 PM on May 1 and the latest sunset is 12 minutes later at 7:09 PM on May 31.

Daylight saving time is not observed in José María Morelos (San José) during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:56 AM and sets 13 hours, 19 minutes later, at 7:15 PM, while on December 21, the shortest day of the year, it rises at 7:04 AM and sets 10 hours, 57 minutes later, at 6:01 PM.

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.

The figure below presents a compact representation of key lunar data for May 2024. 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.

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.

The chance that a given day will be muggy in José María Morelos (San José) is essentially constant during May, remaining around 0% throughout.

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 José María Morelos (San José) is essentially constant during May, remaining within 0.1 miles per hour of 5.1 miles per hour throughout.

For reference, on September 24, the windiest day of the year, the daily average wind speed is 5.7 miles per hour, while on December 2, the calmest day of the year, the daily average wind speed is 4.5 miles per hour.

The lowest daily average wind speed during May is 5.0 miles per hour on May 12.

The wind direction in José María Morelos (San José) during May is predominantly out of the south from May 1 to May 16, the north from May 16 to May 28, and the east from May 28 to May 31.

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).

The growing season in José María Morelos (San José) typically lasts for 11 months (337 days), from around January 21 to around December 24, rarely starting after March 10, or ending before November 7.

The month of May in José María Morelos (San José) is reliably fully 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.

The average accumulated growing degree days in José María Morelos (San José) are increasing during May, increasing by 363°F, from 980°F to 1,343°F, over the course of the month.

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 in José María Morelos (San José) is essentially constant during May, remaining within 0.1 kWh of 7.1 kWh throughout.

For the purposes of this report, the geographical coordinates of José María Morelos (San José) are 19.683 deg latitude, -98.576 deg longitude, and 8,215 ft elevation.

The topography within 2 miles of José María Morelos (San José) contains very significant variations in elevation, with a maximum elevation change of 1,230 feet and an average elevation above sea level of 8,321 feet. Within 10 miles contains very significant variations in elevation (2,395 feet). Within 50 miles contains large variations in elevation (15,135 feet).

The area within 2 miles of José María Morelos (San José) is covered by cropland (51%) and grassland (40%), within 10 miles by cropland (49%) and grassland (32%), and within 50 miles by cropland (35%) and trees (21%).