December Weather at Santa Genoveva / Goiânia Airport Brazil

Daily high temperatures are around 85°F, rarely falling below 79°F or exceeding 91°F. The lowest daily average high temperature is 85°F on December 28.

Daily low temperatures are around 70°F, rarely falling below 67°F or exceeding 72°F. The highest daily average low temperature is 70°F on December 11.

For reference, on September 10, the hottest day of the year, temperatures at Santa Genoveva / Goiânia Airport typically range from 66°F to 91°F, while on July 12, the coldest day of the year, they range from 58°F to 85°F.

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.

Chicacao, Guatemala (3,593 miles away); El Rusio, Honduras (3,326 miles); and Sikonge, Tanzania (5,584 miles) are the far-away foreign places with temperatures most similar to Santa Genoveva / Goiânia Airport (view comparison).

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The month of December at Santa Genoveva / Goiânia Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 86% throughout the month. The highest chance of overcast or mostly cloudy conditions is 87% on December 15.

The clearest day of the month is December 1, with clear, mostly clear, or partly cloudy conditions 15% of the time.

For reference, on December 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 87%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 76%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Santa Genoveva / Goiânia Airport, the chance of a wet day over the course of December is essentially constant, remaining around 80% throughout.

For reference, the year's highest daily chance of a wet day is 81% on December 16, and its lowest chance is 3% on July 29.

Rainfall

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 at Santa Genoveva / Goiânia Airport is increasing, starting the month at 8.5 inches, when it rarely exceeds 12.5 inches or falls below 5.0 inches, and ending the month at 9.1 inches, when it rarely exceeds 13.9 inches or falls below 5.4 inches.

Over the course of December at Santa Genoveva / Goiânia Airport, the length of the day is essentially constant. The shortest day of the month is December 1, with 13 hours, 3 minutes of daylight and the longest day is December 21, with 13 hours, 7 minutes of daylight.

The earliest sunrise of the month at Santa Genoveva / Goiânia Airport is 5:34 AM on December 1 and the latest sunrise is 12 minutes later at 5:47 AM on December 31.

The earliest sunset is 6:37 PM on December 1 and the latest sunset is 16 minutes later at 6:53 PM on December 31.

Daylight saving time is not observed at Santa Genoveva / Goiânia Airport during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:41 AM and sets 13 hours, 7 minutes later, at 6:48 PM, while on June 20, the shortest day of the year, it rises at 6:44 AM and sets 11 hours, 8 minutes later, at 5:52 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for December 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

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 at Santa Genoveva / Goiânia Airport is essentially constant during December, remaining within 1% of 86% throughout.

The highest chance of a muggy day during December is 87% on December 13.

For reference, on March 13, the muggiest day of the year, there are muggy conditions 87% of the time, while on July 18, the least muggy day of the year, there are muggy conditions 0% of the time.

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 at Santa Genoveva / Goiânia Airport is essentially constant during December, remaining within 0.2 miles per hour of 6.4 miles per hour throughout.

For reference, on August 26, the windiest day of the year, the daily average wind speed is 8.9 miles per hour, while on March 10, the calmest day of the year, the daily average wind speed is 5.6 miles per hour.

The hourly average wind direction at Santa Genoveva / Goiânia Airport throughout December is predominantly from the north, with a peak proportion of 46% on December 28.

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).

Temperatures at Santa Genoveva / Goiânia Airport 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.

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 at Santa Genoveva / Goiânia Airport are rapidly increasing during December, increasing by 781°F, from 3,892°F to 4,673°F, over the course of the month.

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 at Santa Genoveva / Goiânia Airport is essentially constant during December, remaining within 0.1 kWh of 5.6 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 5.6 kWh on December 12.

For the purposes of this report, the geographical coordinates of Santa Genoveva / Goiânia Airport are -16.632 deg latitude, -49.221 deg longitude, and 2,428 ft elevation.

The topography within 2 miles of Santa Genoveva / Goiânia Airport contains significant variations in elevation, with a maximum elevation change of 528 feet and an average elevation above sea level of 2,416 feet. Within 10 miles contains significant variations in elevation (1,211 feet). Within 50 miles contains very significant variations in elevation (2,070 feet).

The area within 2 miles of Santa Genoveva / Goiânia Airport is covered by shrubs (49%), trees (22%), and grassland (21%), within 10 miles by trees (30%) and shrubs (23%), and within 50 miles by cropland (51%) and trees (28%).