Average Weather in December in Três de Maio Brazil
Daily high temperatures increase by 2°F, from 84°F to 86°F, rarely falling below 78°F or exceeding 93°F.
Daily low temperatures increase by 3°F, from 65°F to 68°F, rarely falling below 57°F or exceeding 73°F.
For reference, on January 14, the hottest day of the year, temperatures in Três de Maio typically range from 68°F to 87°F, while on July 21, the coldest day of the year, they range from 50°F to 68°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
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The month of December in Três de Maio experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 39% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 37% on December 4.
The clearest day of the month is December 4, with clear, mostly clear, or partly cloudy conditions 63% of the time.
For reference, on June 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 46%, while on March 16, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%.
Cloud Cover Categories in December
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Três de Maio, the chance of a wet day over the course of December is gradually increasing, starting the month at 38% and ending it at 42%.
For reference, the year's highest daily chance of a wet day is 49% on February 8, and its lowest chance is 28% on August 26.
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 Três de Maio is essentially constant, remaining about 5.7 inches throughout, and rarely exceeding 11.4 inches or falling below 2.0 inches.
Average Monthly Rainfall in December
Over the course of December in Três de Maio, the length of the day is essentially constant. The shortest day of the month is December 1, with 13 hours, 46 minutes of daylight and the longest day is December 21, with 13 hours, 54 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Três de Maio is 6:33 AM on December 2 and the latest sunrise is 10 minutes later at 6:43 AM on December 31.
The earliest sunset is 8:18 PM on December 1 and the latest sunset is 17 minutes later at 8:36 PM on December 31.
Daylight saving time is observed in Três de Maio during 2019, but it neither starts nor ends during December, so the entire month is in daylight saving time.
For reference, on December 22, the longest day of the year, the Sun rises at 6:38 AM and sets 13 hours, 54 minutes later, at 8:32 PM, while on June 21, the shortest day of the year, it rises at 7:27 AM and sets 10 hours, 23 minutes later, at 5:50 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 Três de Maio is rapidly increasing during December, rising from 44% to 63% over the course of the month.
For reference, on February 8, the muggiest day of the year, there are muggy conditions 72% of the time, while on August 4, the least muggy day of the year, there are muggy conditions 4% of the time.
Humidity Comfort Levels in December
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Três de Maio is essentially constant during December, remaining within 0.2 miles per hour of 6.0 miles per hour throughout.
For reference, on October 2, the windiest day of the year, the daily average wind speed is 6.8 miles per hour, while on March 4, the calmest day of the year, the daily average wind speed is 5.4 miles per hour.
Average Wind Speed in December
Wind Direction in December
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).
While it does not do so every year, freezing temperatures are seen in Três de Maio over some winters. The day least likely to be in the growing season is July 12, with a 65% chance.
Time Spent in Various Temperature Bands and the Growing Season in December
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
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 Três de Maio are rapidly increasing during December, increasing by 763°F, from 2,367°F to 3,130°F, over the course of the month.
Growing Degree Days 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 Três de Maio is essentially constant during December, remaining within 0.1 kWh of 7.3 kWh throughout.
The highest average daily incident shortwave solar energy during December is 7.4 kWh on December 4.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Três de Maio are -27.773 deg latitude, -54.240 deg longitude, and 1,066 ft elevation.
The topography within 2 miles of Três de Maio contains only modest variations in elevation, with a maximum elevation change of 315 feet and an average elevation above sea level of 1,102 feet. Within 10 miles contains only modest variations in elevation (807 feet). Within 50 miles contains significant variations in elevation (1,709 feet).
The area within 2 miles of Três de Maio is covered by cropland (38%), shrubs (31%), trees (16%), and grassland (15%), within 10 miles by cropland (37%) and shrubs (27%), and within 50 miles by cropland (34%) and trees (33%).
This report illustrates the typical weather in Três de Maio year round, 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 Três de Maio.
For each station, the records are corrected for the elevation difference between that station and Três de Maio 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 Três de Maio is computed as the weighted average of the individual contributions from each station, in addition to a contribution from the MERRA-2 reconstruction, corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Três de Maio.
The station weigths are proportional to the inverse of the distance between Três de Maio and a given station.
The weight assigned to the MERRA-2 value depends on the distance from Três de Maio to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 23%.
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.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . 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.
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.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.