December Weather in Bom Jardim BrazilDaily high temperatures are around 90°F, rarely falling below 86°F or exceeding 94°F. The highest daily average high temperature is 90°F on December 23. Daily low temperatures are around 72°F, rarely falling below 70°F or exceeding 74°F. For reference, on January 11, the hottest day of the year, temperatures in Bom Jardim typically range from 72°F to 90°F, while on July 31, the coldest day of the year, they range from 66°F to 81°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. San Miguel de Cozumel, Mexico (4,002 miles away) and Holguín, Cuba (3,402 miles) are the far-away foreign places with temperatures most similar to Bom Jardim (view comparison). CloudsThe month of December in Bom Jardim experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 55% throughout the month. The clearest day of the month is December 29, with clear, mostly clear, or partly cloudy conditions 47% of the time. For reference, on April 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 62%, 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 Bom Jardim, the chance of a wet day over the course of December is rapidly increasing, starting the month at 5% and ending it at 13%. For reference, the year's highest daily chance of a wet day is 49% on June 17, and its lowest chance is 4% on October 24. RainfallTo 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 Bom Jardim is increasing, starting the month at 0.4 inches, when it rarely exceeds 1.2 inches or falls below -0.0 inches, and ending the month at 0.9 inches, when it rarely exceeds 2.9 inches. SunOver the course of December in Bom Jardim, the length of the day is essentially constant. The shortest day of the month is December 1, with 12 hours, 33 minutes of daylight and the longest day is December 20, with 12 hours, 35 minutes of daylight. The earliest sunrise of the month in Bom Jardim is 4:55 AM on December 1 and the latest sunrise is 13 minutes later at 5:08 AM on December 31. The earliest sunset is 5:27 PM on December 1 and the latest sunset is 15 minutes later at 5:42 PM on December 31. Daylight saving time is not observed in Bom Jardim during 2024. For reference, on December 21, the longest day of the year, the Sun rises at 5:03 AM and sets 12 hours, 35 minutes later, at 5:38 PM, while on June 20, the shortest day of the year, it rises at 5:33 AM and sets 11 hours, 40 minutes later, at 5:14 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 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.
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 Bom Jardim is gradually increasing during December, rising from 85% to 90% over the course of the month. For reference, on May 20, the muggiest day of the year, there are muggy conditions 98% of the time, while on August 8, the least muggy day of the year, there are muggy conditions 75% 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 Bom Jardim is essentially constant during December, remaining within 0.2 miles per hour of 11.6 miles per hour throughout. For reference, on November 14, the windiest day of the year, the daily average wind speed is 11.9 miles per hour, while on April 2, the calmest day of the year, the daily average wind speed is 9.1 miles per hour. The hourly average wind direction in Bom Jardim throughout December is predominantly from the east, with a peak proportion of 98% on December 3. Water TemperatureBom Jardim 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 Bom Jardim is essentially constant during December, remaining around 81°F throughout. 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 Bom Jardim 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 Bom Jardim are rapidly increasing during December, increasing by 857°F, from 3,798°F to 4,655°F, over the course of the month. 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 Bom Jardim is essentially constant during December, remaining within 0.2 kWh of 7.2 kWh throughout. TopographyFor the purposes of this report, the geographical coordinates of Bom Jardim are -7.796 deg latitude, -35.587 deg longitude, and 1,004 ft elevation. The topography within 2 miles of Bom Jardim contains significant variations in elevation, with a maximum elevation change of 676 feet and an average elevation above sea level of 1,213 feet. Within 10 miles contains significant variations in elevation (1,713 feet). Within 50 miles contains very significant variations in elevation (3,422 feet). The area within 2 miles of Bom Jardim is covered by cropland (42%), trees (24%), grassland (17%), and shrubs (17%), within 10 miles by cropland (37%) and trees (22%), and within 50 miles by shrubs (28%) and cropland (27%). Data SourcesThis report illustrates the typical weather in Bom Jardim, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Bom Jardim. For each station, the records are corrected for the elevation difference between that station and Bom Jardim 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 Bom Jardim is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Bom Jardim 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 Bom Jardim 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. |