Winter Weather in Vitória de Santo Antão BrazilDaily high temperatures are around 83°F, rarely falling below 78°F or exceeding 88°F. The lowest daily average high temperature is 82°F on July 18. Daily low temperatures are around 70°F, rarely falling below 66°F or exceeding 74°F. The lowest daily average low temperature is 69°F on July 31. For reference, on February 22, the hottest day of the year, temperatures in Vitória de Santo Antão typically range from 75°F to 90°F, while on July 31, the coldest day of the year, they range from 69°F to 82°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. Tela, Honduras (3,937 miles away); Santiago de Cuba, Cuba (3,376 miles); and Dar es Salaam, Tanzania (5,107 miles) are the far-away foreign places with temperatures most similar to Vitória de Santo Antão (view comparison). CloudsThe winter in Vitória de Santo Antão experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 39% to 27%. The lowest chance of overcast or mostly cloudy conditions is 23% on July 11. The clearest day of the winter is July 11, with clear, mostly clear, or partly cloudy conditions 77% of the time. For reference, on April 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 61%, while on July 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Vitória de Santo Antão, the chance of a wet day over the course of the winter is very rapidly decreasing, starting the season at 55% and ending it at 26%. For reference, the year's highest daily chance of a wet day is 58% on June 17, and its lowest chance is 5% on November 30. RainfallTo 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 Vitória de Santo Antão is very rapidly decreasing, starting the season at 6.2 inches, when it rarely exceeds 10.2 inches or falls below 2.6 inches, and ending the season at 2.0 inches, when it rarely exceeds 3.9 inches or falls below 0.3 inches. The highest average 31-day accumulation is 6.7 inches on June 21. SunOver the course of the winter in Vitória de Santo Antão, the length of the day is gradually increasing. From the start to the end of the season, the length of the day increases by 16 minutes, implying an average daily increase of 11 seconds, and weekly increase of 1 minute, 16 seconds. The shortest day of the winter is June 19, with 11 hours, 39 minutes of daylight and the longest day is August 31, with 11 hours, 57 minutes of daylight. The latest sunrise of the winter in Vitória de Santo Antão is 5:36 AM on July 15 and the earliest sunrise is 14 minutes earlier at 5:22 AM on August 31. The earliest sunset is 5:09 PM on June 1 and the latest sunset is 12 minutes later at 5:21 PM on August 13. Daylight saving time is not observed in Vitória de Santo Antão during 2024. For reference, on December 21, the longest day of the year, the Sun rises at 5:01 AM and sets 12 hours, 36 minutes later, at 5:37 PM, while on June 20, the shortest day of the year, it rises at 5:33 AM and sets 11 hours, 39 minutes later, at 5:12 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. MoonThe 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. HumidityWe 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 Vitória de Santo Antão is decreasing during the winter, falling from 99% to 92% over the course of the season. The lowest chance of a muggy day during the winter is 91% on August 9. For reference, on February 23, the muggiest day of the year, there are muggy conditions 100% of the time, while on August 9, the least muggy day of the year, there are muggy conditions 91% of the time. WindThis 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 Vitória de Santo Antão is increasing during the winter, increasing from 10.2 miles per hour to 11.3 miles per hour over the course of the season. For reference, on November 14, the windiest day of the year, the daily average wind speed is 11.4 miles per hour, while on April 2, the calmest day of the year, the daily average wind speed is 9.3 miles per hour. The highest daily average wind speed during the winter is 11.3 miles per hour on August 8. The wind direction in Vitória de Santo Antão during the winter is predominantly out of the east from June 1 to July 11 and from August 9 to August 31 and the south from July 11 to August 9. Water TemperatureVitória de Santo Antão 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 Vitória de Santo Antão is gradually decreasing during the winter, falling by 3°F, from 82°F to 79°F, over the course of the season. The lowest average surface water temperature during the winter is 79°F on August 13. Growing SeasonDefinitions 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 Vitória de Santo Antão 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 Vitória de Santo Antão are very rapidly decreasing during the winter, decreasing by 8,067°F, from 9,583°F to 1,516°F, over the course of the season. Solar EnergyThis 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 Vitória de Santo Antão is increasing during the winter, rising by 1.1 kWh, from 5.5 kWh to 6.6 kWh, over the course of the season. The lowest average daily incident shortwave solar energy during the winter is 5.4 kWh on June 23. TopographyFor the purposes of this report, the geographical coordinates of Vitória de Santo Antão are -8.118 deg latitude, -35.291 deg longitude, and 512 ft elevation. The topography within 2 miles of Vitória de Santo Antão contains significant variations in elevation, with a maximum elevation change of 571 feet and an average elevation above sea level of 552 feet. Within 10 miles contains significant variations in elevation (1,644 feet). Within 50 miles contains very significant variations in elevation (3,261 feet). The area within 2 miles of Vitória de Santo Antão is covered by cropland (30%), shrubs (20%), grassland (17%), and bare soil (17%), within 10 miles by cropland (37%) and trees (21%), and within 50 miles by water (25%) and cropland (24%). Data SourcesThis report illustrates the typical weather in Vitória de Santo Antão, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Vitória de Santo Antão. For each station, the records are corrected for the elevation difference between that station and Vitória de Santo Antão according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. The estimated value at Vitória de Santo Antão is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Vitória de Santo Antão and a given station. The stations contributing to this reconstruction are:
To get a sense of how much these sources agree with each other, you can view a comparison of Vitória de Santo Antão and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. Other DataAll 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. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . 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. 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. DisclaimerThe 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. Please review our full terms contained on our Terms of Service page. |