December Weather in Manaíra Brazil

Daily high temperatures decrease by 2°F, from 94°F to 92°F, rarely falling below 86°F or exceeding 98°F.

Daily low temperatures are around 68°F, rarely falling below 65°F or exceeding 70°F. The highest daily average low temperature is 68°F on December 14.

For reference, on October 30, the hottest day of the year, temperatures in Manaíra typically range from 66°F to 95°F, while on July 30, the coldest day of the year, they range from 61°F to 86°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.

Coba, Mexico (3,894 miles away) is the far-away foreign place with temperatures most similar to Manaíra (view comparison).

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The month of December in Manaíra experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 65% throughout the month.

The clearest day of the month is December 23, with clear, mostly clear, or partly cloudy conditions 36% of the time.

For reference, on April 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 68%, while on July 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 75%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Manaíra, the chance of a wet day over the course of December is very rapidly increasing, starting the month at 9% and ending it at 22%.

For reference, the year's highest daily chance of a wet day is 51% on March 26, and its lowest chance is 3% on August 25.

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 in Manaíra is rapidly increasing, starting the month at 0.7 inches, when it rarely exceeds 2.3 inches, and ending the month at 1.8 inches, when it rarely exceeds 4.3 inches or falls below 0.2 inches.

Over the course of December in Manaíra, the length of the day is essentially constant. The shortest day of the month is December 1, with 12 hours, 32 minutes of daylight and the longest day is December 21, with 12 hours, 35 minutes of daylight.

The earliest sunrise of the month in Manaíra is 5:05 AM on December 1 and the latest sunrise is 13 minutes later at 5:18 AM on December 31.

The earliest sunset is 5:38 PM on December 1 and the latest sunset is 15 minutes later at 5:52 PM on December 31.

Daylight saving time is not observed in Manaíra during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:13 AM and sets 12 hours, 35 minutes later, at 5:48 PM, while on June 20, the shortest day of the year, it rises at 5:44 AM and sets 11 hours, 41 minutes later, at 5:24 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 in Manaíra is rapidly increasing during December, rising from 5% to 19% over the course of the month.

For reference, on March 31, the muggiest day of the year, there are muggy conditions 72% of the time, while on September 13, 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 in Manaíra is decreasing during December, decreasing from 10.6 miles per hour to 9.3 miles per hour over the course of the month.

For reference, on August 29, the windiest day of the year, the daily average wind speed is 12.8 miles per hour, while on March 26, the calmest day of the year, the daily average wind speed is 6.9 miles per hour.

The hourly average wind direction in Manaíra throughout December is predominantly from the east, with a peak proportion of 88% on December 6.

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 in Manaíra 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 in Manaíra are rapidly increasing during December, increasing by 850°F, from 3,848°F to 4,698°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 in Manaíra is essentially constant during December, remaining within 0.2 kWh of 7.1 kWh throughout.

For the purposes of this report, the geographical coordinates of Manaíra are -7.706 deg latitude, -38.154 deg longitude, and 2,487 ft elevation.

The topography within 2 miles of Manaíra contains very significant variations in elevation, with a maximum elevation change of 1,047 feet and an average elevation above sea level of 2,477 feet. Within 10 miles contains very significant variations in elevation (2,677 feet). Within 50 miles also contains large variations in elevation (3,153 feet).

The area within 2 miles of Manaíra is covered by trees (30%), shrubs (26%), grassland (26%), and cropland (18%), within 10 miles by shrubs (38%) and trees (31%), and within 50 miles by shrubs (45%) and trees (31%).