Climate and Average Weather Year Round in Si’erbao ChinaIn Si’erbao, the summers are long, warm, humid, and partly cloudy and the winters are freezing, snowy, windy, and mostly clear. Over the course of the year, the temperature typically varies from 10°F to 86°F and is rarely below 2°F or above 92°F. Based on the tourism score, the best time of year to visit Si’erbao for warm-weather activities is from early June to mid September. Average Temperature in Si’erbaoThe hot season lasts for 4.2 months, from May 16 to September 23, with an average daily high temperature above 74°F. The hottest month of the year in Si’erbao is July, with an average high of 85°F and low of 69°F. The cold season lasts for 3.0 months, from November 26 to February 28, with an average daily high temperature below 39°F. The coldest month of the year in Si’erbao is January, with an average low of 11°F and high of 28°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. Hawarden, United States (6,207 miles away) is the far-away foreign place with temperatures most similar to Si’erbao (view comparison). CloudsIn Si’erbao, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year. The clearer part of the year in Si’erbao begins around September 1 and lasts for 6.0 months, ending around March 3. The clearest month of the year in Si’erbao is January, during which on average the sky is clear, mostly clear, or partly cloudy 77% of the time. The cloudier part of the year begins around March 3 and lasts for 6.0 months, ending around September 1. The cloudiest month of the year in Si’erbao is June, during which on average the sky is overcast or mostly cloudy 42% 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 Si’erbao varies significantly throughout the year. The wetter season lasts 4.0 months, from May 12 to September 12, with a greater than 17% chance of a given day being a wet day. The month with the most wet days in Si’erbao is July, with an average of 10.3 days with at least 0.04 inches of precipitation. The drier season lasts 8.0 months, from September 12 to May 12. The month with the fewest wet days in Si’erbao is January, with an average of 0.2 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. Based on this categorization, the most common form of precipitation in Si’erbao changes throughout the year. Rain alone is the most common for 8.9 months, from February 29 to November 25. The month with the most days of rain alone in Si’erbao is July, with an average of 10.3 days. Snow alone is the most common for 2.7 months, from February 18 to February 26 and from November 25 to February 8. The month with the most days of snow alone in Si’erbao is November, with an average of 0.3 days. Mixed snow and rain is the most common for 1.9 weeks, from February 8 to February 18 and from February 26 to February 29. The month with the most days of mixed snow and rain in Si’erbao is March, with an average of 0.3 days.
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. Si’erbao experiences extreme seasonal variation in monthly rainfall. The rainy period of the year lasts for 6.9 months, from April 2 to October 31, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Si’erbao is July, with an average rainfall of 4.7 inches. The rainless period of the year lasts for 5.1 months, from October 31 to April 2. The month with the least rain in Si’erbao is January, with an average rainfall of 0.0 inches.
SunThe length of the day in Si’erbao varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 15 minutes of daylight; the longest day is June 21, with 15 hours, 6 minutes of daylight.
The earliest sunrise is at 4:24 AM on June 14, and the latest sunrise is 2 hours, 57 minutes later at 7:21 AM on January 5. The earliest sunset is at 4:29 PM on December 8, and the latest sunset is 3 hours, 3 minutes later at 7:32 PM on June 27. Daylight saving time (DST) is not observed in Si’erbao 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. Si’erbao experiences extreme seasonal variation in the perceived humidity. The muggier period of the year lasts for 2.4 months, from June 23 to September 4, during which time the comfort level is muggy, oppressive, or miserable at least 18% of the time. The month with the most muggy days in Si’erbao is July, with 18.5 days that are muggy or worse. The least muggy day of the year is March 14, 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 Si’erbao experiences significant seasonal variation over the course of the year. The windier part of the year lasts for 8.0 months, from September 30 to May 31, with average wind speeds of more than 9.3 miles per hour. The windiest month of the year in Si’erbao is April, with an average hourly wind speed of 10.9 miles per hour. The calmer time of year lasts for 4.0 months, from May 31 to September 30. The calmest month of the year in Si’erbao is August, with an average hourly wind speed of 7.6 miles per hour.
The predominant average hourly wind direction in Si’erbao varies throughout the year. The wind is most often from the south for 4.6 months, from April 15 to September 4, with a peak percentage of 60% on July 7. The wind is most often from the north for 7.4 months, from September 4 to April 15, with a peak percentage of 61% on January 1. Water TemperatureSi’erbao 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 3.1 months, from June 26 to September 29, with an average temperature above 68°F. The month of the year in Si’erbao with the warmest water is August, with an average temperature of 77°F. The time of year with cooler water lasts for 3.7 months, from December 17 to April 9, with an average temperature below 41°F. The month of the year in Si’erbao with the coolest water is February, with an average temperature of 32°F.
Best Time of Year to VisitTo characterize how pleasant the weather is in Si’erbao 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 time of year to visit Si’erbao for general outdoor tourist activities is from early June to mid September, with a peak score in the last week of August. Tourism Score in Si’erbaoThe 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 Si’erbao for hot-weather activities is from mid July to mid August, with a peak score in the last week of July. Beach/Pool Score in Si’erbaoMethodologyFor 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 Si’erbao typically lasts for 6.5 months (200 days), from around April 9 to around October 26, rarely starting before March 26 or after April 23, and rarely ending before October 10 or after November 11. 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 Si’erbao should appear around April 22, only rarely appearing before April 14 or after May 1. 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 3.5 months, from April 14 to July 31, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest month of the year in Si’erbao is June, with an average of 6.5 kWh. The darker period of the year lasts for 3.0 months, from November 1 to February 2, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest month of the year in Si’erbao is December, with an average of 2.3 kWh.
TopographyFor the purposes of this report, the geographical coordinates of Si’erbao are 40.797 deg latitude, 120.738 deg longitude, and 144 ft elevation. The topography within 2 miles of Si’erbao contains very significant variations in elevation, with a maximum elevation change of 991 feet and an average elevation above sea level of 229 feet. Within 10 miles contains very significant variations in elevation (2,844 feet). Within 50 miles contains large variations in elevation (3,698 feet). The area within 2 miles of Si’erbao is covered by cropland (63%) and trees (31%), within 10 miles by cropland (48%) and trees (45%), and within 50 miles by water (34%) and cropland (32%). Data SourcesThis report illustrates the typical weather in Si’erbao, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Si’erbao is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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. The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Si’erbao, according to the International Standard Atmosphere . All 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. 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. |