Climate and Average Weather Year Round in Xiadian ChinaIn Xiadian, the summers are long, warm, humid, wet, and partly cloudy and the winters are freezing, snowy, windy, and mostly clear. Over the course of the year, the temperature typically varies from 19°F to 86°F and is rarely below 11°F or above 94°F. Based on the tourism score, the best times of year to visit Xiadian for warm-weather activities are from late May to mid July and from mid August to late September. Average Temperature in XiadianThe hot season lasts for 4.1 months, from May 18 to September 22, with an average daily high temperature above 75°F. The hottest month of the year in Xiadian is July, with an average high of 85°F and low of 71°F. The cold season lasts for 3.1 months, from November 29 to March 1, with an average daily high temperature below 44°F. The coldest month of the year in Xiadian is January, with an average low of 20°F and high of 34°F.
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. Fort Madison, United States (6,705 miles away) is the far-away foreign place with temperatures most similar to Xiadian (view comparison). CloudsIn Xiadian, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year. The clearer part of the year in Xiadian begins around August 29 and lasts for 5.6 months, ending around February 17. The clearest month of the year in Xiadian is October, during which on average the sky is clear, mostly clear, or partly cloudy 70% of the time. The cloudier part of the year begins around February 17 and lasts for 6.4 months, ending around August 29. The cloudiest month of the year in Xiadian is July, during which on average the sky is overcast or mostly cloudy 46% of the time.
PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Xiadian varies significantly throughout the year. The wetter season lasts 2.8 months, from June 13 to September 8, with a greater than 18% chance of a given day being a wet day. The month with the most wet days in Xiadian is July, with an average of 9.7 days with at least 0.04 inches of precipitation. The drier season lasts 9.2 months, from September 8 to June 13. The month with the fewest wet days in Xiadian is January, with an average of 0.8 days with at least 0.04 inches of precipitation. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Xiadian is July, with an average of 9.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 35% on July 23.
RainfallTo show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Xiadian experiences extreme seasonal variation in monthly rainfall. The rainy period of the year lasts for 8.1 months, from March 20 to November 25, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Xiadian is July, with an average rainfall of 5.3 inches. The rainless period of the year lasts for 3.9 months, from November 25 to March 20. The month with the least rain in Xiadian is January, with an average rainfall of 0.1 inches.
SunThe length of the day in Xiadian varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 36 minutes of daylight; the longest day is June 21, with 14 hours, 43 minutes of daylight.
The earliest sunrise is at 4:37 AM on June 13, and the latest sunrise is 2 hours, 35 minutes later at 7:12 AM on January 7. The earliest sunset is at 4:40 PM on December 6, and the latest sunset is 2 hours, 42 minutes later at 7:22 PM on June 28. Daylight saving time (DST) is not observed in Xiadian during 2024. 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 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. 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. Xiadian experiences extreme seasonal variation in the perceived humidity. The muggier period of the year lasts for 2.9 months, from June 17 to September 13, during which time the comfort level is muggy, oppressive, or miserable at least 22% of the time. The month with the most muggy days in Xiadian is July, with 23.8 days that are muggy or worse. The least muggy day of the year is February 22, when muggy conditions are essentially unheard of.
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 Xiadian experiences significant seasonal variation over the course of the year. The windier part of the year lasts for 7.4 months, from October 22 to June 5, with average wind speeds of more than 8.7 miles per hour. The windiest month of the year in Xiadian is April, with an average hourly wind speed of 10.5 miles per hour. The calmer time of year lasts for 4.5 months, from June 5 to October 22. The calmest month of the year in Xiadian is August, with an average hourly wind speed of 6.9 miles per hour.
The predominant average hourly wind direction in Xiadian varies throughout the year. The wind is most often from the south for 5.2 months, from March 15 to August 20, with a peak percentage of 56% on June 13. The wind is most often from the north for 6.8 months, from August 20 to March 15, with a peak percentage of 46% on January 1. Water TemperatureXiadian 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 water temperature experiences extreme seasonal variation over the course of the year. The time of year with warmer water lasts for 3.2 months, from June 26 to October 2, with an average temperature above 70°F. The month of the year in Xiadian with the warmest water is August, with an average temperature of 78°F. The time of year with cooler water lasts for 3.6 months, from December 18 to April 6, with an average temperature below 45°F. The month of the year in Xiadian with the coolest water is February, with an average temperature of 37°F.
Best Time of Year to VisitTo characterize how pleasant the weather is in Xiadian throughout the year, we compute two travel scores. The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Xiadian for general outdoor tourist activities are from late May to mid July and from mid August to late September, with a peak score in the first week of September. Tourism Score in XiadianThe beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Xiadian for hot-weather activities is from early July to late August, with a peak score in the last week of July. Beach/Pool Score in XiadianMethodologyFor each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed. Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more. Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter. Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter. 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 Xiadian typically lasts for 7.4 months (225 days), from around March 29 to around November 9, rarely starting before March 11 or after April 16, and rarely ending before October 23 or after November 26. 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. Based on growing degree days alone, the first spring blooms in Xiadian should appear around April 14, only rarely appearing before April 3 or after April 28. 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 experiences significant seasonal variation over the course of the year. The brighter period of the year lasts for 3.2 months, from April 12 to July 20, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest month of the year in Xiadian is June, with an average of 6.6 kWh. The darker period of the year lasts for 3.0 months, from November 4 to February 3, with an average daily incident shortwave energy per square meter below 3.3 kWh. The darkest month of the year in Xiadian is December, with an average of 2.4 kWh.
TopographyFor the purposes of this report, the geographical coordinates of Xiadian are 37.189 deg latitude, 120.377 deg longitude, and 469 ft elevation. The topography within 2 miles of Xiadian contains only modest variations in elevation, with a maximum elevation change of 394 feet and an average elevation above sea level of 429 feet. Within 10 miles contains only modest variations in elevation (833 feet). Within 50 miles contains very significant variations in elevation (2,904 feet). The area within 2 miles of Xiadian is covered by cropland (61%) and water (17%), within 10 miles by cropland (62%) and grassland (24%), and within 50 miles by cropland (46%) and water (24%). Data SourcesThis report illustrates the typical weather in Xiadian, 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, Qingdao Liuting International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Xiadian. At a distance of 103 kilometers from Xiadian, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records. The station records are corrected for the elevation difference between the station and Xiadian according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis. 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. |