Climate and Average Weather Year Round in Tlatzala Mexico

In Tlatzala, the wet season is comfortable and overcast and the dry season is cool and partly cloudy. Over the course of the year, the temperature typically varies from 37°F to 70°F and is rarely below 30°F or above 77°F.

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

The warm season lasts for 2.5 months, from March 29 to June 12, with an average daily high temperature above 68°F. The hottest month of the year in Tlatzala is May, with an average high of 70°F and low of 48°F.

The cool season lasts for 2.4 months, from November 29 to February 10, with an average daily high temperature below 60°F. The coldest month of the year in Tlatzala is January, with an average low of 37°F and high of 58°F.

In Tlatzala, 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 Tlatzala begins around October 29 and lasts for 6.8 months, ending around May 24.

The clearest month of the year in Tlatzala is March, during which on average the sky is clear, mostly clear, or partly cloudy 67% of the time.

The cloudier part of the year begins around May 24 and lasts for 5.2 months, ending around October 29.

The cloudiest month of the year in Tlatzala is September, during which on average the sky is overcast or mostly cloudy 87% 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 Tlatzala varies very significantly throughout the year.

The wetter season lasts 4.8 months, from May 21 to October 14, with a greater than 45% chance of a given day being a wet day. The month with the most wet days in Tlatzala is August, with an average of 24.3 days with at least 0.04 inches of precipitation.

The drier season lasts 7.2 months, from October 14 to May 21. The month with the fewest wet days in Tlatzala is January, with an average of 2.8 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 Tlatzala is August, with an average of 24.3 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 82% on September 1.

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. Tlatzala experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from January 22 to December 11, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Tlatzala is September, with an average rainfall of 8.2 inches.

The rainless period of the year lasts for 1.3 months, from December 11 to January 22. The month with the least rain in Tlatzala is December, with an average rainfall of 0.5 inches.

The length of the day in Tlatzala varies over the course of the year. In 2024, the shortest day is December 21, with 11 hours, 0 minutes of daylight; the longest day is June 20, with 13 hours, 15 minutes of daylight.

The earliest sunrise is at 5:50 AM on June 4, and the latest sunrise is 1 hour, 13 minutes later at 7:04 AM on January 19. The earliest sunset is at 5:49 PM on November 24, and the latest sunset is 1 hour, 20 minutes later at 7:09 PM on July 6.

Daylight saving time (DST) is not observed in Tlatzala 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 Tlatzala, 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, staying within 1% of 1% 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 Tlatzala experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.3 months, from June 2 to November 10, with average wind speeds of more than 5.7 miles per hour. The windiest month of the year in Tlatzala is July, with an average hourly wind speed of 6.3 miles per hour.

The calmer time of year lasts for 6.7 months, from November 10 to June 2. The calmest month of the year in Tlatzala is December, with an average hourly wind speed of 5.1 miles per hour.

The predominant average hourly wind direction in Tlatzala is from the east throughout the year.

Tlatzala 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 4.5 months, from June 1 to October 18, with an average temperature above 82°F. The month of the year in Tlatzala with the warmest water is August, with an average temperature of 85°F.

The time of year with cooler water lasts for 3.0 months, from December 24 to March 24, with an average temperature below 75°F. The month of the year in Tlatzala with the coolest water is February, with an average temperature of 73°F.

To characterize how pleasant the weather is in Tlatzala 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 Tlatzala for general outdoor tourist activities is from early April to late May, with a peak score in the first 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 Tlatzala for hot-weather activities is from mid April to mid May, with a peak score in the first 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 Tlatzala typically lasts for 8.8 months (270 days), from around March 5 to around November 29, rarely starting before February 2 or after March 30, and rarely ending before October 31 or after January 2.

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 Tlatzala should appear around February 11, only rarely appearing before February 3 or after February 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 2.8 months, from March 8 to June 1, with an average daily incident shortwave energy per square meter above 6.6 kWh. The brightest month of the year in Tlatzala is April, with an average of 7.0 kWh.

The darker period of the year lasts for 2.3 months, from November 14 to January 25, with an average daily incident shortwave energy per square meter below 5.2 kWh. The darkest month of the year in Tlatzala is December, with an average of 4.8 kWh.

For the purposes of this report, the geographical coordinates of Tlatzala are 18.729 deg latitude, -97.141 deg longitude, and 7,421 ft elevation.

The topography within 2 miles of Tlatzala contains large variations in elevation, with a maximum elevation change of 2,503 feet and an average elevation above sea level of 7,755 feet. Within 10 miles contains large variations in elevation (7,717 feet). Within 50 miles also contains extreme variations in elevation (18,189 feet).

The area within 2 miles of Tlatzala is covered by trees (90%) and shrubs (10%), within 10 miles by trees (69%) and cropland (20%), and within 50 miles by cropland (45%) and trees (28%).