Average Weather in December in Ixtapa-Zihuatanejo Mexico
In Ixtapa-Zihuatanejo, the month of December is characterized by essentially constant daily high temperatures, with daily highs around 87°F throughout the month, rarely exceeding 90°F or dropping below 84°F.
Daily low temperatures are around 77°F, rarely falling below 74°F or exceeding 80°F.
For reference, on May 7, the hottest day of the year, temperatures in Ixtapa-Zihuatanejo typically range from 79°F to 91°F, while on March 5, the coldest day of the year, they range from 75°F to 88°F.
Average High and Low Temperature in December
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. 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 December
The month of December in Ixtapa-Zihuatanejo experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 46% throughout the month.
The clearest day of the month is December 31, with clear, mostly clear, or partly cloudy conditions 55% of the time.
For reference, on September 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on March 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.
Cloud Cover in December
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Ixtapa-Zihuatanejo, the chance of a wet day over the course of December is essentially constant, remaining around 2% throughout.
For reference, the year's highest daily chance of a wet day is 68% on September 14, and its lowest chance is 0% on April 14.
Probability of Precipitation in December
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 December in Ixtapa-Zihuatanejo is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.9 inches or falling below -0.0 inches.
The lowest average 31-day accumulation is 0.1 inches on December 13.
Average Monthly Rainfall in December
Over the course of December in Ixtapa-Zihuatanejo, the length of the day is essentially constant. The shortest day of the month is December 21, with 11 hours, 5 minutes of daylight and the longest day is December 1, with 11 hours, 9 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Ixtapa-Zihuatanejo is 7:00 AM on December 1 and the latest sunrise is 16 minutes later at 7:16 AM on December 31.
The earliest sunset is 6:09 PM on December 1 and the latest sunset is 12 minutes later at 6:22 PM on December 31.
Daylight saving time is observed in Ixtapa-Zihuatanejo during 2017, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 7:12 AM and sets 13 hours, 11 minutes later, at 8:23 PM, while on December 21, the shortest day of the year, it rises at 7:12 AM and sets 11 hours, 5 minutes later, at 6:16 PM.
Sunrise & Sunset with Twilight in December
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 Ixtapa-Zihuatanejo is rapidly decreasing during December, falling from 86% to 68% over the course of the month.
For reference, on August 2, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 19, the leasy muggy day of the year, there are muggy conditions 44% of the time.
Humidity Comfort Levels in December
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 Ixtapa-Zihuatanejo is essentially constant during December, remaining around 2.7 miles per hour throughout.
For reference, on September 14, the windiest day of the year, the daily average wind speed is 3.8 miles per hour, while on December 6, the calmest day of the year, the daily average wind speed is 2.7 miles per hour.
The lowest daily average wind speed during December is 2.7 miles per hour on December 6.
Average Wind Speed in December
Wind Direction in December
Ixtapa-Zihuatanejo 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 Ixtapa-Zihuatanejo is essentially constant during December, remaining within 1°F of 84°F throughout.
Average Water Temperature in December
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 Ixtapa-Zihuatanejo is essentially constant during December, remaining within 0.1 kWh of 4.6 kWh throughout.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Ixtapa-Zihuatanejo are 17.643 deg latitude, -101.552 deg longitude, and 171 ft elevation.
The topography within 2 miles of Ixtapa-Zihuatanejo contains very significant variations in elevation, with a maximum elevation change of 1,903 feet and an average elevation above sea level of 318 feet. Within 10 miles contains very significant variations in elevation (3,435 feet). Within 50 miles also contains extreme variations in elevation (9,357 feet).
The area within 2 miles of Ixtapa-Zihuatanejo is covered by cropland (53%), water (22%), and trees (15%), within 10 miles by water (48%) and cropland (33%), and within 50 miles by water (50%) and trees (29%).
This report illustrates the typical weather in Ixtapa-Zihuatanejo year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Ixtapa-Zihuatanejo is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Ixtapa-Zihuatanejo, according to the International Standard Atmosphere .
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.