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Average Weather in Tangjian China

In Tangjian, the summers are long, hot, muggy, and wet; the winters are short, very cold, and dry; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 26°F to 90°F and is rarely below 18°F or above 97°F.

Climate Summary

very coldcoldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDec69%69%41%41%clearovercastprecipitation: 7.2 inprecipitation: 7.2 in0.5 in0.5 inmuggy: 97%muggy: 97%0%0%drydrytourism score: 7.0tourism score: 7.00.00.0
Click on each chart for more information.

Based on the tourism score, the best times of year to visit Tangjian for warm-weather activities are from late May to mid June and from late August to early October.

Temperature

The hot season lasts for 4.3 months, from May 10 to September 19, with an average daily high temperature above 80°F. The hottest day of the year is August 1, with an average high of 90°F and low of 75°F.

The cold season lasts for 2.9 months, from December 1 to February 27, with an average daily high temperature below 52°F. The coldest day of the year is January 18, with an average low of 26°F and high of 43°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in TangjianJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMfreezingfreezingvery coldcoldcoldcoolcoolwarmhotvery coldcomfortablefreezingcomfortablefreezing
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Wichita, Kansas, United States (6,961 miles away) and Karaj, Iran (3,774 miles) are the far-away foreign places with temperatures most similar to Tangjian (view comparison).

Clouds

In Tangjian, 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 Tangjian begins around August 22 and lasts for 5.6 months, ending around February 11. On October 22, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 69% of the time, and overcast or mostly cloudy 31% of the time.

The cloudier part of the year begins around February 11 and lasts for 6.3 months, ending around August 22. On July 11, the cloudiest day of the year, the sky is overcast or mostly cloudy 59% of the time, and clear, mostly clear, or partly cloudy 41% of the time.

Cloud Cover Categories

Cloud Cover Categories in TangjianclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 2269%Oct 2269%Jul 1141%Jul 1141%Aug 2254%Aug 2254%Feb 1155%Feb 1155%clearmostly clearovercastmostly cloudypartly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Tangjian varies significantly throughout the year.

The wetter season lasts 2.8 months, from June 14 to September 8, with a greater than 25% chance of a given day being a wet day. The chance of a wet day peaks at 44% on July 11.

The drier season lasts 9.2 months, from September 8 to June 14. The smallest chance of a wet day is 6% on January 22.

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 44% on July 11.

Daily Chance of Precipitation

Daily Chance of Precipitation in TangjianwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 1144%Jul 1144%Jan 226%Jan 226%Jan 17%Jan 17%Jun 1425%Jun 1425%Sep 825%Sep 825%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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. Tangjian experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from February 1 to December 25, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 14, with an average total accumulation of 7.2 inches.

The rainless period of the year lasts for 1.2 months, from December 25 to February 1. The least rain falls around January 16, with an average total accumulation of 0.4 inches.

Average Monthly Rainfall

Average Monthly Rainfall in TangjianrainJanFebMarAprMayJunJulAugSepOctNovDec0 in2 in4 in6 in8 in10 in12 in14 inJul 147.2 inJul 147.2 inJan 160.4 inJan 160.4 inDec 250.5 inDec 250.5 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Tangjian varies significantly over the course of the year. In 2017, the shortest day is December 22, with 9 hours, 53 minutes of daylight; the longest day is June 21, with 14 hours, 26 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 4:51 AM on June 12, and the latest sunrise is 2 hours, 19 minutes later at 7:10 AM on January 8. The earliest sunset is at 4:54 PM on December 5, and the latest sunset is 2 hours, 25 minutes later at 7:19 PM on June 29.

Daylight saving time (DST) is not observed in Tangjian during 2017.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in TangjianJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 124:51 AMJun 124:51 AM7:19 PMJun 297:19 PMJun 29Dec 54:54 PMDec 54:54 PM7:10 AMJan 87:10 AMJan 8daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

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.

Tangjian experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.5 months, from June 7 to September 22, during which time the comfort level is muggy, oppressive, or miserable at least 24% of the time. The muggiest day of the year is August 2, with muggy conditions 97% of the time.

The least muggy day of the year is December 12, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in TangjianmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Dec 120%Dec 120%97%Aug 297%Aug 2Jun 724%Jun 724%Sep 2224%Sep 2224%miserablemiserabledrydryhumidhumidoppressiveoppressivemuggymuggy
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Tangjian experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 3.8 months, from February 13 to June 5, with average wind speeds of more than 8.4 miles per hour. The windiest day of the year is May 2, with an average hourly wind speed of 9.6 miles per hour.

The calmer time of year lasts for 8.2 months, from June 5 to February 13. The calmest day of the year is August 30, with an average hourly wind speed of 7.1 miles per hour.

Average Wind Speed

Average Wind Speed in TangjianwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mphMay 29.6 mphMay 29.6 mphAug 307.1 mphAug 307.1 mphFeb 138.4 mphFeb 138.4 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Tangjian varies throughout the year.

The wind is most often from the east for 1.2 months, from February 27 to April 2; for 4.0 weeks, from June 2 to June 30; and for 2.8 months, from July 27 to October 20, with a peak percentage of 47% on August 17. The wind is most often from the south for 2.0 months, from April 2 to June 2 and for 3.9 weeks, from June 30 to July 27, with a peak percentage of 41% on July 12. The wind is most often from the north for 4.2 months, from October 20 to February 27, with a peak percentage of 42% on January 1.

Wind Direction

Wind Direction in TangjianNESESENJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%southeastnorthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Tangjian 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 3.3 months, from June 27 to October 4, with an average temperature above 72°F. The day of the year with the warmest water is August 10, with an average temperature of 80°F.

The time of year with cooler water lasts for 3.6 months, from December 21 to April 8, with an average temperature below 48°F. The day of the year with the coolest water is February 11, with an average temperature of 39°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Tangjian 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 Tangjian for general outdoor tourist activities are from late May to mid June and from late August to early October, with a peak score in the second week of September.

Tourism Score

Tourism Score in TangjianJanFebMarAprMayJunJulAugSepOctNovDec02468107.07.00.00.06.66.64.64.6precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 Tangjian for hot-weather activities is from mid July to late August, with a peak score in the second week of August.

Beach/Pool Score

Beach/Pool Score in Tangjianbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468105.95.90.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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.

Growing Season

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 Tangjian typically lasts for 7.5 months (229 days), from around March 29 to around November 13, rarely starting before March 14 or after April 13, and rarely ending before October 28 or after November 29.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Tangjiangrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 2950%Mar 2950%Nov 1350%Nov 1390%Apr 1390%Apr 1390%Oct 2890%Oct 2810%Mar 1410%Mar 1410%Nov 2910%Nov 290%Dec 250%Dec 25Jul 19100%Jul 19100%freezingvery coldcomfortablewarmhotcoolcold
The percentage of time spent in various temperature bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The black line is the percentage chance that a given day is 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.

Based on growing degree days alone, the first spring blooms in Tangjian should appear around March 27, only rarely appearing before March 20 or after April 6.

Growing Degree Days

Growing Degree Days in TangjianJanFebMarAprMayJunJulAugSepOctNovDec0°F500°F1,000°F1,500°F2,000°F2,500°F3,000°F3,500°F4,000°F4,500°FMar 2784°FMar 2784°FMay 28900°FMay 28900°FJul 21,800°FJul 21,800°FDec 314,684°FDec 314,684°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 significant seasonal variation over the course of the year.

The brighter period of the year lasts for 2.6 months, from April 16 to July 5, with an average daily incident shortwave energy per square meter above 5.6 kWh. The brightest day of the year is May 31, with an average of 6.4 kWh.

The darker period of the year lasts for 3.0 months, from November 5 to February 6, with an average daily incident shortwave energy per square meter below 3.4 kWh. The darkest day of the year is December 20, with an average of 2.7 kWh.

Average Daily Incident Shortwave Solar Energy

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Tangjian are 34.133 deg latitude, 119.004 deg longitude, and 13 ft elevation.

The topography within 2 miles of Tangjian is essentially flat, with a maximum elevation change of 36 feet and an average elevation above sea level of 14 feet. Within 10 miles is essentially flat (174 feet). Within 50 miles contains only modest variations in elevation (2,067 feet).

The area within 2 miles of Tangjian is covered by cropland (74%) and artificial surfaces (24%), within 10 miles by cropland (68%) and artificial surfaces (26%), and within 50 miles by cropland (65%) and artificial surfaces (24%).

Data Sources

This report illustrates the typical weather in Tangjian, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Tangjian 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 Tangjian, 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 Tables of the Sun, Moon and Planets , 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 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.

Disclaimer

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.