Average Weather in Barra de São Francisco Brazil
In Barra de São Francisco, the wet season is hot, oppressive, and mostly cloudy and the dry season is warm and mostly clear. Over the course of the year, the temperature typically varies from 61°F to 90°F and is rarely below 56°F or above 98°F.
Based on the tourism score, the best time of year to visit Barra de São Francisco for warm-weather activities is from mid May to mid September.
The temperature in Barra de São Francisco varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Barra de São Francisco, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year in Barra de São Francisco begins around April 4 and lasts for 6.4 months, ending around October 18. On August 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 79% of the time, and overcast or mostly cloudy 21% of the time.
The cloudier part of the year begins around October 18 and lasts for 5.6 months, ending around April 4. On December 4, the cloudiest day of the year, the sky is overcast or mostly cloudy 77% of the time, and clear, mostly clear, or partly cloudy 23% of the time.
Cloud Cover Categories
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. The chance of wet days in Barra de São Francisco varies significantly throughout the year.
The wetter season lasts 5.5 months, from October 20 to April 5, with a greater than 30% chance of a given day being a wet day. The chance of a wet day peaks at 54% on December 4.
The drier season lasts 6.5 months, from April 5 to October 20. The smallest chance of a wet day is 6% on July 29.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 54% on December 4.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Barra de São Francisco experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 10 months, from August 12 to June 13, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 8, with an average total accumulation of 7.2 inches.
The rainless period of the year lasts for 2.0 months, from June 13 to August 12. The least rain falls around July 22, with an average total accumulation of 0.4 inches.
Average Monthly Rainfall
The length of the day in Barra de São Francisco varies over the course of the year. In 2018, the shortest day is June 21, with 11 hours, 0 minutes of daylight; the longest day is December 21, with 13 hours, 16 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:10 AM on October 20, and the latest sunrise is 1 hour, 27 minutes later at 6:37 AM on February 17. The earliest sunset is at 5:13 PM on June 4, and the latest sunset is 2 hours, 13 minutes later at 7:26 PM on January 17.
Daylight saving time (DST) is observed in Barra de São Francisco during 2018, starting in the spring on October 21 and ending in the fall on February 17.
Sunrise & Sunset with Twilight and Daylight Saving Time
Barra de São Francisco experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 8.0 months, from October 4 to June 6, during which time the comfort level is muggy, oppressive, or miserable at least 26% of the time. The muggiest day of the year is December 27, with muggy conditions 94% of the time.
The least muggy day of the year is August 3, with muggy conditions 4% of the time.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Barra de São Francisco experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 4.0 months, from August 12 to December 11, with average wind speeds of more than 8.2 miles per hour. The windiest day of the year is October 10, with an average hourly wind speed of 9.9 miles per hour.
The calmer time of year lasts for 8.0 months, from December 11 to August 12. The calmest day of the year is May 6, with an average hourly wind speed of 6.5 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Barra de São Francisco is from the east throughout the year.
Best Time of Year to Visit
To characterize how pleasant the weather is in Barra de São Francisco throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Barra de São Francisco for general outdoor tourist activities is from mid May to mid September, with a peak score in the last week of July.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Barra de São Francisco for hot-weather activities are from late March to late June and from late July to mid October, with a peak score in the second week of September.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
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
Growing Degree Days
The average daily incident shortwave solar energy experiences some seasonal variation over the course of the year.
The brighter period of the year lasts for 2.1 months, from December 31 to March 2, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest day of the year is February 11, with an average of 6.9 kWh.
The darker period of the year lasts for 2.6 months, from May 11 to July 29, with an average daily incident shortwave energy per square meter below 5.0 kWh. The darkest day of the year is June 17, with an average of 4.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Barra de São Francisco are -18.755 deg latitude, -40.891 deg longitude, and 814 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 .
Time zones for aiports and weather stations are provided by AskGeo.com .