April Weather in Hualfín ArgentinaDaily high temperatures decrease by 5°F, from 75°F to 70°F, rarely falling below 62°F or exceeding 81°F. Daily low temperatures decrease by 6°F, from 53°F to 46°F, rarely falling below 41°F or exceeding 58°F. For reference, on December 23, the hottest day of the year, temperatures in Hualfín typically range from 60°F to 80°F, while on July 11, the coldest day of the year, they range from 39°F to 63°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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. Johannesburg, South Africa (5,692 miles away) is the far-away foreign place with temperatures most similar to Hualfín (view comparison). CloudsThe month of April in Hualfín experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 18% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 16% on April 10. The clearest day of the month is April 10, with clear, mostly clear, or partly cloudy conditions 84% of the time. For reference, on January 10, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 33%, while on September 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 87%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Hualfín, the chance of a wet day over the course of April is very rapidly decreasing, starting the month at 21% and ending it at 11%. For reference, the year's highest daily chance of a wet day is 37% on February 7, and its lowest chance is 2% on August 7. 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 April in Hualfín is decreasing, starting the month at 1.5 inches, when it rarely exceeds 2.9 inches or falls below 0.2 inches, and ending the month at 0.6 inches, when it rarely exceeds 1.3 inches or falls below 0.1 inches. SunOver the course of April in Hualfín, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 43 minutes, implying an average daily decrease of 1 minute, 29 seconds, and weekly decrease of 10 minutes, 23 seconds. The shortest day of the month is April 30, with 11 hours, 4 minutes of daylight and the longest day is April 1, with 11 hours, 47 minutes of daylight. The earliest sunrise of the month in Hualfín is 7:37 AM on April 1 and the latest sunrise is 15 minutes later at 7:52 AM on April 30. The latest sunset is 7:24 PM on April 1 and the earliest sunset is 28 minutes earlier at 6:56 PM on April 30. Daylight saving time is not observed in Hualfín during 2024. For reference, on December 21, the longest day of the year, the Sun rises at 6:29 AM and sets 13 hours, 52 minutes later, at 8:21 PM, while on June 20, the shortest day of the year, it rises at 8:16 AM and sets 10 hours, 25 minutes later, at 6:41 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 April 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 Hualfín is essentially constant during April, remaining around 0% throughout. For reference, on December 13, the muggiest day of the year, there are muggy conditions 0% of the time, while on March 6, the least muggy day of the year, there are muggy conditions 0% 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 Hualfín is essentially constant during April, remaining within 0.1 miles per hour of 6.2 miles per hour throughout. For reference, on November 21, the windiest day of the year, the daily average wind speed is 7.9 miles per hour, while on April 19, the calmest day of the year, the daily average wind speed is 6.1 miles per hour. The lowest daily average wind speed during April is 6.1 miles per hour on April 27. The hourly average wind direction in Hualfín throughout April is predominantly from the south, with a peak proportion of 39% on April 1. 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). The growing season in Hualfín typically lasts for 10 months (319 days), from around August 6 to around June 20, rarely starting after September 15, or ending before May 20. The month of April in Hualfín is reliably fully 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 Hualfín are increasing during April, increasing by 301°F, from 3,623°F to 3,924°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 Hualfín is decreasing during April, falling by 1.1 kWh, from 6.5 kWh to 5.4 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Hualfín are -27.229 deg latitude, -66.831 deg longitude, and 6,043 ft elevation. The topography within 2 miles of Hualfín contains very significant variations in elevation, with a maximum elevation change of 1,362 feet and an average elevation above sea level of 6,199 feet. Within 10 miles contains very significant variations in elevation (5,492 feet). Within 50 miles also contains extreme variations in elevation (17,165 feet). The area within 2 miles of Hualfín is covered by sparse vegetation (40%), grassland (23%), trees (21%), and shrubs (13%), within 10 miles by sparse vegetation (44%) and grassland (18%), and within 50 miles by bare soil (39%) and sparse vegetation (20%). Data SourcesThis report illustrates the typical weather in Hualfín, 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 Hualfín. For each station, the records are corrected for the elevation difference between that station and Hualfín 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 Hualfín is computed as the weighted average of the individual contributions from each station, in addition to a contribution from the MERRA-2 reconstruction, corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Hualfín. The station weights are proportional to the inverse of the distance between Hualfín and a given station. The weight assigned to the MERRA-2 value depends on the distance from Hualfín to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 35%. 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 Hualfín 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. |