Winter Weather in Barra Velha Brazil

Daily high temperatures are around 71°F, rarely falling below 61°F or exceeding 80°F. The lowest daily average high temperature is 69°F on July 21.

Daily low temperatures are around 59°F, rarely falling below 49°F or exceeding 66°F. The lowest daily average low temperature is 57°F on July 23.

For reference, on January 27, the hottest day of the year, temperatures in Barra Velha typically range from 73°F to 84°F, while on July 22, the coldest day of the year, they range from 57°F to 69°F.

The figure below shows you a compact characterization of the hourly average winter temperatures. 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.

Durban, South Africa (4,759 miles away) is the far-away foreign place with temperatures most similar to Barra Velha (view comparison).

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The winter in Barra Velha experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 39% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 36% on August 25.

The clearest day of the winter is August 25, with clear, mostly clear, or partly cloudy conditions 64% of the time.

For reference, on February 9, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on August 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Barra Velha, the chance of a wet day over the course of the winter is essentially constant, remaining around 28% throughout.

For reference, the year's highest daily chance of a wet day is 63% on February 3, and its lowest chance is 24% on August 13.

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the winter in Barra Velha is gradually increasing, starting the season at 3.5 inches, when it rarely exceeds 6.7 inches or falls below 0.8 inches, and ending the season at 3.9 inches, when it rarely exceeds 7.9 inches or falls below 0.8 inches.

The lowest average 31-day accumulation is 3.3 inches on August 13.

Over the course of the winter in Barra Velha, the length of the day is increasing. From the start to the end of the season, the length of the day increases by 1 hour, 0 minutes, implying an average daily increase of 39 seconds, and weekly increase of 4 minutes, 36 seconds.

The shortest day of the winter is June 20, with 10 hours, 28 minutes of daylight and the longest day is August 31, with 11 hours, 34 minutes of daylight.

The latest sunrise of the winter in Barra Velha is 7:03 AM on July 2 and the earliest sunrise is 36 minutes earlier at 6:28 AM on August 31.

The earliest sunset is 5:29 PM on June 8 and the latest sunset is 33 minutes later at 6:01 PM on August 31.

Daylight saving time is not observed in Barra Velha during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:18 AM and sets 13 hours, 49 minutes later, at 7:07 PM, while on June 20, the shortest day of the year, it rises at 7:02 AM and sets 10 hours, 28 minutes later, at 5:30 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 the winter of 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 Barra Velha is decreasing during the winter, falling from 31% to 23% over the course of the season.

The lowest chance of a muggy day during the winter is 11% on July 23.

For reference, on February 12, the muggiest day of the year, there are muggy conditions 97% of the time, while on July 23, the least muggy day of the year, there are muggy conditions 11% 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 Barra Velha is gradually increasing during the winter, increasing from 6.3 miles per hour to 6.9 miles per hour over the course of the season.

For reference, on November 27, the windiest day of the year, the daily average wind speed is 7.9 miles per hour, while on June 15, the calmest day of the year, the daily average wind speed is 6.2 miles per hour.

The lowest daily average wind speed during the winter is 6.2 miles per hour on June 20.

The wind direction in Barra Velha during the winter is predominantly out of the north from June 1 to August 30 and the east from August 30 to August 31.

Barra Velha is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Barra Velha is decreasing during the winter, falling by 4°F, from 69°F to 65°F, over the course of the season.

The lowest average surface water temperature during the winter is 64°F on August 4.

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 Velha 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 Barra Velha are very rapidly decreasing during the winter, decreasing by 6,359°F, from 7,168°F to 808°F, over the course of the season.

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 Velha is increasing during the winter, rising by 1.2 kWh, from 3.5 kWh to 4.6 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the winter is 3.2 kWh on June 24.

For the purposes of this report, the geographical coordinates of Barra Velha are -26.632 deg latitude, -48.685 deg longitude, and 46 ft elevation.

The topography within 2 miles of Barra Velha contains only modest variations in elevation, with a maximum elevation change of 184 feet and an average elevation above sea level of 24 feet. Within 10 miles contains only modest variations in elevation (1,250 feet). Within 50 miles contains very significant variations in elevation (5,089 feet).

The area within 2 miles of Barra Velha is covered by water (63%), trees (19%), and shrubs (10%), within 10 miles by water (54%) and trees (30%), and within 50 miles by water (52%) and trees (36%).