Average Weather in Tangkou China
In Tangkou, the summers are warm, oppressive, wet, and mostly cloudy and the winters are short, very cold, and partly cloudy. Over the course of the year, the temperature typically varies from 26°F to 82°F and is rarely below 18°F or above 87°F.
Based on the tourism score, the best time of year to visit Tangkou for warm-weather activities is from late July to late September.
The warm season lasts for 3.5 months, from June 2 to September 17, with an average daily high temperature above 74°F. The hottest day of the year is July 28, with an average high of 82°F and low of 71°F.
The cold season lasts for 3.0 months, from December 4 to March 3, with an average daily high temperature below 49°F. The coldest day of the year is January 13, with an average low of 26°F and high of 41°F.
Average High and Low Temperature
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.
Average Hourly Temperature
New York City, New York, United States (7,492 miles away); Gargnano, Italy (5,522 miles); and Qvareli, Georgia (4,011 miles) are the far-away foreign places with temperatures most similar to Tangkou (view comparison).
In Tangkou, 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 Tangkou begins around September 1 and lasts for 6.2 months, ending around March 9. On October 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 70% of the time, and overcast or mostly cloudy 30% of the time.
The cloudier part of the year begins around March 9 and lasts for 5.8 months, ending around September 1. On July 4, the cloudiest day of the year, the sky is overcast or mostly cloudy 77% of the time, and clear, mostly clear, or partly cloudy 23% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Tangkou varies significantly throughout the year.
The wetter season lasts 6.6 months, from February 18 to September 7, with a greater than 35% chance of a given day being a wet day. The chance of a wet day peaks at 55% on June 22.
The drier season lasts 5.4 months, from September 7 to February 18. The smallest chance of a wet day is 16% on December 18.
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 throughout the year is rain alone, with a peak probability of 55% on June 22.
Daily Chance of Precipitation
To 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. Tangkou experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Tangkou. The most rain falls during the 31 days centered around June 25, with an average total accumulation of 12.5 inches.
The least rain falls around December 27, with an average total accumulation of 1.2 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Tangkou experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.2 months, from November 22 to March 29, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 22, with an average total liquid-equivalent accumulation of 0.7 inches.
The snowless period of the year lasts for 7.8 months, from March 29 to November 22. The least snow falls around July 29, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Tangkou varies significantly over the course of the year. In 2018, the shortest day is December 22, with 10 hours, 13 minutes of daylight; the longest day is June 21, with 14 hours, 5 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:05 AM on June 11, and the latest sunrise is 1 hour, 59 minutes later at 7:04 AM on January 10. The earliest sunset is at 5:06 PM on December 2, and the latest sunset is 2 hours, 6 minutes later at 7:12 PM on July 1.
Daylight saving time (DST) is not observed in Tangkou during 2018.
Sunrise & Sunset with Twilight
We 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.
Tangkou experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.3 months, from May 18 to September 28, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The muggiest day of the year is July 24, with muggy conditions 99% of the time.
The least muggy day of the year is December 22, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
This 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 Tangkou experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 3.5 months, from January 29 to May 13, with average wind speeds of more than 6.6 miles per hour. The windiest day of the year is March 9, with an average hourly wind speed of 7.4 miles per hour.
The calmer time of year lasts for 8.5 months, from May 13 to January 29. The calmest day of the year is August 25, with an average hourly wind speed of 5.8 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Tangkou varies throughout the year.
The wind is most often from the east for 3.1 months, from January 16 to April 19; for 4.0 weeks, from May 17 to June 14; and for 3.9 months, from August 8 to December 4, with a peak percentage of 54% on October 7. The wind is most often from the south for 4.0 weeks, from April 19 to May 17 and for 1.8 months, from June 14 to August 8, with a peak percentage of 52% on July 12. The wind is most often from the north for 1.4 months, from December 4 to January 16, with a peak percentage of 37% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Tangkou 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 Tangkou for general outdoor tourist activities is from late July to late September, with a peak score in the second week of September.
The 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 Tangkou for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.
For 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.
Definitions 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 Tangkou typically lasts for 7.5 months (231 days), from around March 26 to around November 12, rarely starting before March 7 or after April 13, and rarely ending before October 26 or after November 29.
Time Spent in Various Temperature Bands and 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.
Based on growing degree days alone, the first spring blooms in Tangkou should appear around April 2, only rarely appearing before March 20 or after April 14.
Growing Degree Days
This 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 some seasonal variation over the course of the year.
The brighter period of the year lasts for 1.9 months, from April 27 to June 22, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is June 1, with an average of 5.8 kWh.
The darker period of the year lasts for 3.1 months, from November 9 to February 11, with an average daily incident shortwave energy per square meter below 3.6 kWh. The darkest day of the year is December 29, with an average of 3.0 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Tangkou are 30.081 deg latitude, 118.185 deg longitude, and 2,159 ft elevation.
The topography within 2 miles of Tangkou contains extreme variations in elevation, with a maximum elevation change of 3,435 feet and an average elevation above sea level of 2,120 feet. Within 10 miles also contains extreme variations in elevation (5,384 feet). Within 50 miles also contains extreme variations in elevation (5,955 feet).
The area within 2 miles of Tangkou is covered by trees (91%), within 10 miles by trees (86%), and within 50 miles by trees (77%) and cropland (10%).
This report illustrates the typical weather in Tangkou, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Nanjing Dajiaochang Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Tangkou.
At a distance of 196 kilometers from Tangkou, 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 Tangkou to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 48%, making the weight assigned to the weather station 52%.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The 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.