Climate and Average Weather Year Round in Ajuchitlán Mexico

In Ajuchitlán, the summers are short and warm, the winters are short and cool, and it is dry and partly cloudy year round. Over the course of the year, the temperature typically varies from 40°F to 82°F and is rarely below 33°F or above 89°F.

Based on the tourism score, the best time of year to visit Ajuchitlán for warm-weather activities is from early April to early June.

The warm season lasts for 2.2 months, from April 5 to June 13, with an average daily high temperature above 80°F. The hottest month of the year in Ajuchitlán is May, with an average high of 82°F and low of 55°F.

The cool season lasts for 2.4 months, from November 26 to February 8, with an average daily high temperature below 73°F. The coldest month of the year in Ajuchitlán is January, with an average low of 40°F and high of 71°F.

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

The clearer part of the year in Ajuchitlán begins around October 28 and lasts for 7.4 months, ending around June 9.

The clearest month of the year in Ajuchitlán is March, during which on average the sky is clear, mostly clear, or partly cloudy 63% of the time.

The cloudier part of the year begins around June 9 and lasts for 4.6 months, ending around October 28.

The cloudiest month of the year in Ajuchitlán is September, during which on average the sky is overcast or mostly cloudy 80% of the time.

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

The wetter season lasts 4.0 months, from June 3 to October 4, with a greater than 27% chance of a given day being a wet day. The month with the most wet days in Ajuchitlán is July, with an average of 15.0 days with at least 0.04 inches of precipitation.

The drier season lasts 8.0 months, from October 4 to June 3. The month with the fewest wet days in Ajuchitlán is December, with an average of 0.8 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 Ajuchitlán is July, with an average of 15.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 52% on July 3.

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. Ajuchitlán experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.4 months, from April 22 to November 3, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Ajuchitlán is July, with an average rainfall of 3.5 inches.

The rainless period of the year lasts for 5.6 months, from November 3 to April 22. The month with the least rain in Ajuchitlán is December, with an average rainfall of 0.1 inches.

The length of the day in Ajuchitlán varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 53 minutes of daylight; the longest day is June 20, with 13 hours, 23 minutes of daylight.

The earliest sunrise is at 5:58 AM on June 5, and the latest sunrise is 1 hour, 21 minutes later at 7:19 AM on January 17. The earliest sunset is at 5:57 PM on November 25, and the latest sunset is 1 hour, 27 minutes later at 7:25 PM on July 4.

Daylight saving time (DST) is not observed in Ajuchitlán during 2024.

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

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 perceived humidity level in Ajuchitlán, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 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 Ajuchitlán experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.4 months, from May 29 to October 9, with average wind speeds of more than 7.8 miles per hour. The windiest month of the year in Ajuchitlán is July, with an average hourly wind speed of 8.5 miles per hour.

The calmer time of year lasts for 7.6 months, from October 9 to May 29. The calmest month of the year in Ajuchitlán is December, with an average hourly wind speed of 7.0 miles per hour.

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

The wind is most often from the west for 1.7 months, from February 26 to April 17, with a peak percentage of 39% on March 26. The wind is most often from the east for 10 months, from April 17 to February 26, with a peak percentage of 40% on January 1.

To characterize how pleasant the weather is in Ajuchitlán 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 Ajuchitlán for general outdoor tourist activities is from early April to early June, with a peak score in the second week of May.

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 Ajuchitlán for hot-weather activities is from mid April to early June, with a peak score in the second week of May.

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.

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 Ajuchitlán typically lasts for 11 months (337 days), from around January 21 to around December 23, rarely starting after March 9, or ending before November 6.

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.

Based on growing degree days alone, the first spring blooms in Ajuchitlán should appear around January 14, only rarely appearing before January 12 or after January 18.

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 3.1 months, from March 15 to June 18, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest month of the year in Ajuchitlán is May, with an average of 7.4 kWh.

The darker period of the year lasts for 2.5 months, from November 12 to January 27, with an average daily incident shortwave energy per square meter below 5.2 kWh. The darkest month of the year in Ajuchitlán is December, with an average of 4.7 kWh.

For the purposes of this report, the geographical coordinates of Ajuchitlán are 20.707 deg latitude, -100.020 deg longitude, and 6,463 ft elevation.

The topography within 2 miles of Ajuchitlán contains significant variations in elevation, with a maximum elevation change of 719 feet and an average elevation above sea level of 6,537 feet. Within 10 miles contains significant variations in elevation (2,753 feet). Within 50 miles contains large variations in elevation (9,065 feet).

The area within 2 miles of Ajuchitlán is covered by grassland (78%) and cropland (12%), within 10 miles by grassland (52%) and shrubs (25%), and within 50 miles by shrubs (36%) and grassland (26%).