August Weather in Yongjiang ChinaDaily high temperatures decrease by 3°F, from 87°F to 84°F, rarely falling below 75°F or exceeding 93°F. Daily low temperatures decrease by 3°F, from 72°F to 69°F, rarely falling below 64°F or exceeding 76°F. For reference, on July 24, the hottest day of the year, temperatures in Yongjiang typically range from 73°F to 87°F, while on January 19, the coldest day of the year, they range from 32°F to 44°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. 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. East Hampton, United States (8,067 miles away) is the far-away foreign place with temperatures most similar to Yongjiang (view comparison). CloudsThe month of August in Yongjiang experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 73% to 61%. The clearest day of the month is August 31, with clear, mostly clear, or partly cloudy conditions 39% of the time. For reference, on July 8, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 78%, while on December 9, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Yongjiang, the chance of a wet day over the course of August is rapidly decreasing, starting the month at 34% and ending it at 26%. For reference, the year's highest daily chance of a wet day is 49% on May 16, and its lowest chance is 14% on December 17. 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 August in Yongjiang is decreasing, starting the month at 4.0 inches, when it rarely exceeds 8.3 inches or falls below 1.2 inches, and ending the month at 3.1 inches, when it rarely exceeds 6.1 inches or falls below 0.8 inches. SunOver the course of August in Yongjiang, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 39 minutes, implying an average daily decrease of 1 minute, 19 seconds, and weekly decrease of 9 minutes, 13 seconds. The shortest day of the month is August 31, with 12 hours, 41 minutes of daylight and the longest day is August 1, with 13 hours, 20 minutes of daylight. The earliest sunrise of the month in Yongjiang is 5:59 AM on August 1 and the latest sunrise is 14 minutes later at 6:13 AM on August 31. The latest sunset is 7:19 PM on August 1 and the earliest sunset is 26 minutes earlier at 6:53 PM on August 31. Daylight saving time is not observed in Yongjiang during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 5:42 AM and sets 13 hours, 46 minutes later, at 7:28 PM, while on December 21, the shortest day of the year, it rises at 7:16 AM and sets 10 hours, 31 minutes later, at 5:47 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 August 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 Yongjiang is rapidly decreasing during August, falling from 99% to 81% over the course of the month. For reference, on July 9, the muggiest day of the year, there are muggy conditions 99% of the time, while on December 20, 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 Yongjiang is essentially constant during August, remaining within 0.3 miles per hour of 6.3 miles per hour throughout. For reference, on March 8, the windiest day of the year, the daily average wind speed is 8.5 miles per hour, while on August 11, the calmest day of the year, the daily average wind speed is 6.1 miles per hour. The lowest daily average wind speed during August is 6.1 miles per hour on August 11. The wind direction in Yongjiang during August is predominantly out of the south from August 1 to August 14 and the north from August 14 to August 31. 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 Yongjiang typically lasts for 9.0 months (276 days), from around March 4 to around December 4, rarely starting before February 9 or after March 23, and rarely ending before November 17 or after December 21. The month of August in Yongjiang 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 Yongjiang are rapidly increasing during August, increasing by 821°F, from 2,786°F to 3,607°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 Yongjiang is essentially constant during August, remaining around 5.5 kWh throughout. TopographyFor the purposes of this report, the geographical coordinates of Yongjiang are 25.894 deg latitude, 111.588 deg longitude, and 1,230 ft elevation. The topography within 2 miles of Yongjiang contains large variations in elevation, with a maximum elevation change of 2,231 feet and an average elevation above sea level of 1,635 feet. Within 10 miles contains large variations in elevation (3,806 feet). Within 50 miles also contains extreme variations in elevation (6,299 feet). The area within 2 miles of Yongjiang is covered by trees (91%), within 10 miles by trees (88%), and within 50 miles by trees (59%) and cropland (21%). Data SourcesThis report illustrates the typical weather in Yongjiang, 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 is only a single weather station, Guilin Liangjiang International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Yongjiang. At a distance of 173 kilometers from Yongjiang, further than our threshold of 150 kilometers, this station is deemed insufficiently nearby to be relied upon as our primary source for temperature and dew point records. Consequently, the station records are blended with interpolated values from NASA's MERRA-2 satellite-era reanalysis , and both are corrected for elevation differences according to the International Standard Atmosphere . The weight assigned to the MERRA-2 value depends on the distance from Yongjiang to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 31%, making the weight assigned to the weather station 69%. 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. 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