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December Weather in Barra de São Francisco Brazil

Daily high temperatures are around 86°F, rarely falling below 80°F or exceeding 94°F. The lowest daily average high temperature is 86°F on December 13.

Daily low temperatures are around 70°F, rarely falling below 66°F or exceeding 72°F.

For reference, on October 13, the hottest day of the year, temperatures in Barra de São Francisco typically range from 67°F to 90°F, while on July 23, the coldest day of the year, they range from 61°F to 82°F.

Average High and Low Temperature in December in Barra de São Francisco

Average High and Low Temperature in December in Barra de São FranciscoDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313165°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°FNovJanDec 1386°FDec 1386°F70°F70°FDec 186°FDec 186°F69°F69°FDec 3186°FDec 3186°F70°F70°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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 in Barra de São Francisco

Average Hourly Temperature in December in Barra de São FranciscoDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNovJancomfortablecomfortablewarmwarmhot
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Maneromango, Tanzania (5,392 miles away) is the far-away foreign place with temperatures most similar to Barra de São Francisco (view comparison).

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The month of December in Barra de São Francisco experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 76% to 72%. The highest chance of overcast or mostly cloudy conditions is 77% on December 10.

The clearest day of the month is December 31, with clear, mostly clear, or partly cloudy conditions 28% of the time.

For reference, on December 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 77%, while on August 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%.

Cloud Cover Categories in December in Barra de São Francisco

Cloud Cover Categories in December in Barra de São FranciscoDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJanAug 2879%Aug 2879%Dec 124%Dec 124%Dec 3128%Dec 3128%Dec 1123%Dec 1123%Dec 2124%Dec 2124%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Barra de São Francisco, the chance of a wet day over the course of December is rapidly decreasing, starting the month at 54% and ending it at 47%.

For reference, the year's highest daily chance of a wet day is 54% on December 4, and its lowest chance is 6% on July 28.

Probability of Precipitation in December in Barra de São Francisco

Probability of Precipitation in December in Barra de São FranciscoDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%55%55%60%60%NovJanDec 354%Dec 354%Dec 3147%Dec 3147%Dec 1154%Dec 1154%Dec 2152%Dec 2152%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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 Barra de São Francisco is decreasing, starting the month at 7.1 inches, when it rarely exceeds 11.3 inches or falls below 3.2 inches, and ending the month at 6.4 inches, when it rarely exceeds 10.9 inches or falls below 1.9 inches.

The highest average 31-day accumulation is 7.2 inches on December 7.

Average Monthly Rainfall in December in Barra de São Francisco

Average Monthly Rainfall in December in Barra de São FranciscoDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inNovJanDec 67.2 inDec 67.2 inDec 316.4 inDec 316.4 inDec 216.8 inDec 216.8 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of December in Barra de São Francisco, the length of the day is essentially constant. The shortest day of the month is December 1, with 13 hours, 11 minutes of daylight and the longest day is December 21, with 13 hours, 16 minutes of daylight.

Hours of Daylight and Twilight in December in Barra de São Francisco

Hours of Daylight and Twilight in December in Barra de São FranciscoDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 2113 hr, 16 minDec 2113 hr, 16 mindaydaydaydaynightDec 113 hr, 11 minDec 113 hr, 11 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Barra de São Francisco is 4:57 AM on December 1 and the latest sunrise is 12 minutes later at 5:09 AM on December 31.

The earliest sunset is 6:08 PM on December 1 and the latest sunset is 16 minutes later at 6:24 PM on December 31.

Daylight saving time is not observed in Barra de São Francisco during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:04 AM and sets 13 hours, 16 minutes later, at 6:19 PM, while on June 20, the shortest day of the year, it rises at 6:15 AM and sets 11 hours, 0 minutes later, at 5:15 PM.

Sunrise & Sunset with Twilight in December in Barra de São Francisco

The solar day over the course of December. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

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.

Solar Elevation and Azimuth in December in Barra de São Francisco

Solar Elevation and Azimuth in December in Barra de São FranciscoDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNovJan0010102020203030404050505060607070808080000101020203030304040505060606070708080
northeastsouthwest
Solar elevation and azimuth over the course of December 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

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.

Moon Rise, Set & Phases in December in Barra de São Francisco

Moon Rise, Set & Phases in December in Barra de São FranciscoDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 19:48 AMNov 19:48 AMNov 156:29 PMNov 156:29 PMDec 13:22 AMDec 13:22 AMDec 156:02 AMDec 156:02 AMDec 307:28 PMDec 307:28 PMJan 137:28 PMJan 137:28 PMJan 299:37 AMJan 299:37 AM4:51 AM4:51 AM6:04 PM6:04 PM5:54 PM5:54 PM5:14 AM5:14 AM4:53 AM4:53 AM6:43 PM6:43 PM5:47 PM5:47 PM4:52 AM4:52 AM4:31 AM4:31 AM6:27 PM6:27 PM6:31 PM6:31 PM5:43 AM5:43 AM5:19 AM5:19 AM6:48 PM6:48 PM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Dec 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
0%4:53 AMESE6:43 PMWSW-11:47 AMS245,561 mi
2
2%5:44 AMESE7:40 PMWSW-12:42 PMS243,487 mi
3
6%6:40 AMESE8:35 PMWSW-1:39 PMS241,358 mi
4
12%7:40 AMESE9:26 PMWSW-2:35 PMS239,213 mi
5
20%8:40 AMESE10:13 PMWSW-3:29 PMS237,073 mi
6
30%9:40 AMESE10:55 PMWSW-4:20 PMN234,954 mi
7
41%10:38 AMESE11:35 PMW-5:08 PMN232,890 mi
8
50%11:35 AME--5:55 PMN230,949 mi
9
64%-12:13 AMW12:32 PME6:42 PMN229,242 mi
10
75%-12:51 AMW1:30 PME7:30 PMN227,918 mi
11
85%-1:30 AMW2:31 PMENE8:21 PMN227,150 mi
12
93%-2:13 AMWNW3:34 PMENE9:16 PMN227,104 mi
13
98%-3:00 AMWNW4:40 PMENE10:16 PMN227,899 mi
14
100%-3:53 AMWNW5:47 PMENE11:20 PMN229,566 mi
15
100%-4:52 AMWNW6:52 PMENE--
16
99%-5:55 AMWNW7:51 PMENE12:24 AMN232,026 mi
17
96%-6:58 AMWNW8:43 PMENE1:25 AMN235,087 mi
18
90%-7:59 AMWNW9:28 PMENE2:22 AMN238,482 mi
19
83%-8:56 AMWNW10:08 PMENE3:13 AMN241,913 mi
20
75%-9:49 AMWNW10:43 PME3:59 AMN245,094 mi
21
65%-10:39 AMW11:15 PME4:41 AMN247,779 mi
22
50%-11:27 AMW11:46 PME5:20 AMN249,782 mi
23
46%-12:14 PMW-5:59 AMN250,983 mi
24
36%12:17 AME1:01 PMW-6:38 AMN251,332 mi
25
27%12:49 AMESE1:50 PMWSW-7:18 AMN250,849 mi
26
19%1:24 AMESE2:42 PMWSW-8:01 AMS249,617 mi
27
12%2:03 AMESE3:36 PMWSW-8:47 AMS247,771 mi
28
6%2:46 AMESE4:33 PMWSW-9:38 AMS245,487 mi
29
2%3:36 AMESE5:30 PMWSW-10:32 AMS242,963 mi
30
0%4:31 AMESE6:27 PMWSW-11:29 AMS240,400 mi
31
1%5:30 AMESE7:21 PMWSW-12:27 PMS237,974 mi

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 Barra de São Francisco is increasing during December, rising from 86% to 93% over the course of the month.

The highest chance of a muggy day during December is 94% on December 26.

For reference, on December 26, the muggiest day of the year, there are muggy conditions 94% of the time, while on July 31, the least muggy day of the year, there are muggy conditions 4% of the time.

Humidity Comfort Levels in December in Barra de São Francisco

Humidity Comfort Levels in December in Barra de São FranciscoDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%NovJanDec 2694%Dec 2694%Dec 186%Dec 186%Dec 1192%Dec 1192%oppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Barra de São Francisco is essentially constant during December, remaining within 0.2 miles per hour of 8.2 miles per hour throughout.

For reference, on October 9, the windiest day of the year, the daily average wind speed is 9.9 miles per hour, while on May 5, the calmest day of the year, the daily average wind speed is 6.5 miles per hour.

Average Wind Speed in December in Barra de São Francisco

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Barra de São Francisco throughout December is predominantly from the east, with a peak proportion of 57% on December 31.

Wind Direction in December in Barra de São Francisco

Wind Direction in December in Barra de São FranciscoDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%NovJaneastnorthsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

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 Barra de São Francisco 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 in December in Barra de São Francisco

Time Spent in Various Temperature Bands and the Growing Season in December in Barra de São FranciscoDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJan100%Dec 16100%Dec 16comfortablewarmhotcool
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 percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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 Barra de São Francisco are rapidly increasing during December, increasing by 794°F, from 3,526°F to 4,320°F, over the course of the month.

Growing Degree Days in December in Barra de São Francisco

Growing Degree Days in December in Barra de São FranciscoDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031313,400°F3,400°F3,600°F3,600°F3,800°F3,800°F4,000°F4,000°F4,200°F4,200°F4,400°F4,400°FNovJanDec 13,526°FDec 13,526°FDec 314,320°FDec 314,320°FDec 113,791°FDec 113,791°FDec 214,054°FDec 214,054°F
The average growing degree days accumulated over the course of December, with 25th to 75th and 10th to 90th percentile bands.

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 Barra de São Francisco is essentially constant during December, remaining within 0.2 kWh of 6.3 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 6.1 kWh on December 2.

Average Daily Incident Shortwave Solar Energy in December in Barra de São Francisco

Average Daily Incident Shortwave Solar Energy in December in Barra de São FranciscoDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhNovJanDec 26.1 kWhDec 26.1 kWhDec 316.4 kWhDec 316.4 kWhDec 216.3 kWhDec 216.3 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Barra de São Francisco are -18.755 deg latitude, -40.891 deg longitude, and 646 ft elevation.

The topography within 2 miles of Barra de São Francisco contains very significant variations in elevation, with a maximum elevation change of 958 feet and an average elevation above sea level of 816 feet. Within 10 miles contains very significant variations in elevation (2,379 feet). Within 50 miles contains large variations in elevation (5,449 feet).

The area within 2 miles of Barra de São Francisco is covered by trees (29%), grassland (26%), cropland (24%), and shrubs (21%), within 10 miles by trees (33%) and cropland (29%), and within 50 miles by trees (36%) and cropland (26%).

This report illustrates the typical weather in Barra de São Francisco, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Barra de São Francisco 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 Barra de São Francisco, 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 Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

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.

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