Average Weather in San Patricio Mexico
In San Patricio, the wet season is hot, oppressive, and overcast and the dry season is warm, muggy, and partly cloudy. Over the course of the year, the temperature typically varies from 66°F to 89°F and is rarely below 62°F or above 91°F.
Based on the beach/pool score, the best times of year to visit San Patricio for hot-weather activities are from mid April to early June and from mid November to mid December.
The hot season lasts for 4.5 months, from June 18 to November 2, with an average daily high temperature above 87°F. The hottest day of the year is August 2, with an average high of 89°F and low of 77°F.
The cool season lasts for 3.1 months, from February 1 to May 4, with an average daily high temperature below 82°F. The coldest day of the year is March 12, with an average low of 66°F and high of 81°F.
Average High and Low Temperature
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 San Patricio, 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 San Patricio begins around October 25 and lasts for 7.7 months, ending around June 15. On February 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 66% of the time, and overcast or mostly cloudy 34% of the time.
The cloudier part of the year begins around June 15 and lasts for 4.3 months, ending around October 25. On September 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 94% of the time, and clear, mostly clear, or partly cloudy 6% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in San Patricio varies very significantly throughout the year.
The wetter season lasts 3.9 months, from June 13 to October 11, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 65% on August 23.
The drier season lasts 8.1 months, from October 11 to June 13. The smallest chance of a wet day is 0% on April 2.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 65% on August 23.
Daily Chance of Precipitation
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. San Patricio experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 8.8 months, from May 21 to February 15, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around September 5, with an average total accumulation of 8.0 inches.
The rainless period of the year lasts for 3.2 months, from February 15 to May 21. The least rain falls around April 17, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
The length of the day in San Patricio varies over the course of the year. In 2018, the shortest day is December 21, with 10 hours, 58 minutes of daylight; the longest day is June 21, with 13 hours, 17 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:53 AM on March 31, and the latest sunrise is 1 hour, 4 minutes later at 7:57 AM on October 27. The earliest sunset is at 6:19 PM on November 24, and the latest sunset is 2 hours, 22 minutes later at 8:40 PM on July 5.
Daylight saving time (DST) is observed in San Patricio during 2018, starting in the spring on April 1, lasting 6.8 months, and ending in the fall on October 28.
Sunrise & Sunset with Twilight and Daylight Saving Time
San Patricio experiences significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 9.0 months, from April 13 to January 14, during which time the comfort level is muggy, oppressive, or miserable at least 69% of the time. The muggiest day of the year is August 17, with muggy conditions 100% of the time.
The least muggy day of the year is March 8, with muggy conditions 59% of the time.
Humidity Comfort Levels
The average hourly wind speed in San Patricio experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 5.7 months, from January 27 to July 16, with average wind speeds of more than 6.0 miles per hour. The windiest day of the year is April 18, with an average hourly wind speed of 6.7 miles per hour.
The calmer time of year lasts for 6.3 months, from July 16 to January 27. The calmest day of the year is November 21, with an average hourly wind speed of 5.3 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in San Patricio varies throughout the year.
The wind is most often from the west for 9.4 months, from February 7 to November 18, with a peak percentage of 67% on May 24. The wind is most often from the north for 2.6 months, from November 18 to February 7, with a peak percentage of 44% on January 1.
San Patricio 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 27 to November 10, with an average temperature above 84°F. The day of the year with the warmest water is August 6, with an average temperature of 85°F.
The time of year with cooler water lasts for 2.7 months, from February 13 to May 4, with an average temperature below 79°F. The day of the year with the coolest water is March 27, with an average temperature of 77°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in San Patricio 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 San Patricio for general outdoor tourist activities is from mid January to mid May, with a peak score in the first week of March.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit San Patricio for hot-weather activities are from mid April to early June and from mid November to mid December, with a peak score in the third week of May.
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.
Temperatures in San Patricio 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
Growing Degree Days
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 2.7 months, from March 14 to June 4, with an average daily incident shortwave energy per square meter above 6.7 kWh. The brightest day of the year is May 9, with an average of 7.3 kWh.
The darker period of the year lasts for 4.1 months, from July 5 to November 8, with an average daily incident shortwave energy per square meter below 4.7 kWh. The darkest day of the year is September 13, with an average of 4.0 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of San Patricio are 19.225 deg latitude, -104.704 deg longitude, and 43 ft elevation.
The topography within 2 miles of San Patricio contains only modest variations in elevation, with a maximum elevation change of 472 feet and an average elevation above sea level of 67 feet. Within 10 miles contains only modest variations in elevation (2,779 feet). Within 50 miles contains large variations in elevation (9,514 feet).
The area within 2 miles of San Patricio is covered by cropland (63%) and water (33%), within 10 miles by water (45%) and cropland (37%), and within 50 miles by water (53%) and trees (23%).
This report illustrates the typical weather in San Patricio, 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 are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in San Patricio.
For each station, the records are corrected for the elevation difference between that station and San Patricio according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at San Patricio is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between San Patricio and a given station.
The stations contributing to this reconstruction are: Playa de Oro International Airport (97%, 18 kilometers, southeast) and Licenciado Gustavo Díaz Ordaz International Airport (3.2%, 172 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .