Climate and Average Weather Year Round in Tangdong China

In Tangdong, the summers are hot, oppressive, and overcast; the winters are short, cold, and partly cloudy; and it is wet year round. Over the course of the year, the temperature typically varies from 42°F to 92°F and is rarely below 33°F or above 97°F.

Based on the tourism score, the best time of year to visit Tangdong for warm-weather activities is from late September to late October.

The hot season lasts for 3.7 months, from May 30 to September 22, with an average daily high temperature above 85°F. The hottest month of the year in Tangdong is July, with an average high of 92°F and low of 79°F.

The cool season lasts for 2.9 months, from December 7 to March 2, with an average daily high temperature below 61°F. The coldest month of the year in Tangdong is January, with an average low of 42°F and high of 54°F.

In Tangdong, 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 Tangdong begins around September 10 and lasts for 6.5 months, ending around March 27.

The clearest month of the year in Tangdong is December, during which on average the sky is clear, mostly clear, or partly cloudy 69% of the time.

The cloudier part of the year begins around March 27 and lasts for 5.4 months, ending around September 10.

The cloudiest month of the year in Tangdong is July, during which on average the sky is overcast or mostly cloudy 75% of the time.

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

The wetter season lasts 6.5 months, from February 11 to August 29, with a greater than 32% chance of a given day being a wet day. The month with the most wet days in Tangdong is May, with an average of 14.9 days with at least 0.04 inches of precipitation.

The drier season lasts 5.4 months, from August 29 to February 11. The month with the fewest wet days in Tangdong is December, with an average of 4.9 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 Tangdong is May, with an average of 14.9 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 49% on May 5.

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. Tangdong experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Tangdong. The month with the most rain in Tangdong is May, with an average rainfall of 7.4 inches.

The month with the least rain in Tangdong is December, with an average rainfall of 1.6 inches.

The length of the day in Tangdong varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 31 minutes of daylight; the longest day is June 21, with 13 hours, 46 minutes of daylight.

The earliest sunrise is at 5:34 AM on June 9, and the latest sunrise is 1 hour, 41 minutes later at 7:15 AM on January 13. The earliest sunset is at 5:34 PM on November 30, and the latest sunset is 1 hour, 48 minutes later at 7:23 PM on July 2.

Daylight saving time (DST) is not observed in Tangdong during 2024.

The 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.

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.

Tangdong experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.0 months, from April 13 to October 13, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The month with the most muggy days in Tangdong is July, with 30.9 days that are muggy or worse.

The month with the fewest muggy days in Tangdong is January, with 0.0 days that are muggy or worse.

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

The windier part of the year lasts for 1.4 months, from June 12 to July 23, with average wind speeds of more than 6.8 miles per hour. The windiest month of the year in Tangdong is April, with an average hourly wind speed of 7.5 miles per hour.

The calmer time of year lasts for 11 months, from July 23 to June 12. The calmest month of the year in Tangdong is August, with an average hourly wind speed of 5.9 miles per hour.

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

The wind is most often from the south for 4.5 months, from April 7 to August 23, with a peak percentage of 76% on July 9. The wind is most often from the north for 7.5 months, from August 23 to April 7, with a peak percentage of 64% on January 1.

To characterize how pleasant the weather is in Tangdong 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 Tangdong for general outdoor tourist activities is from late September to late October, with a peak score in the second week of October.

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 Tangdong for hot-weather activities is from late August to early October, with a peak score in the third week of September.

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.

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).

While it does not do so every year, freezing temperatures are seen in Tangdong over some winters. The day least likely to be in the growing season is January 11, with a 54% chance.

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 Tangdong should appear around February 4, only rarely appearing before January 21 or after February 23.

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 4.1 months, from May 18 to September 20, with an average daily incident shortwave energy per square meter above 5.4 kWh. The brightest month of the year in Tangdong is July, with an average of 5.8 kWh.

The darker period of the year lasts for 3.1 months, from November 16 to February 20, with an average daily incident shortwave energy per square meter below 3.8 kWh. The darkest month of the year in Tangdong is January, with an average of 3.3 kWh.

For the purposes of this report, the geographical coordinates of Tangdong are 26.002 deg latitude, 113.254 deg longitude, and 430 ft elevation.

The topography within 2 miles of Tangdong contains very significant variations in elevation, with a maximum elevation change of 1,781 feet and an average elevation above sea level of 717 feet. Within 10 miles contains very significant variations in elevation (4,226 feet). Within 50 miles also contains extreme variations in elevation (6,496 feet).

The area within 2 miles of Tangdong is covered by trees (66%) and artificial surfaces (10%), within 10 miles by trees (74%) and shrubs (12%), and within 50 miles by trees (71%) and shrubs (12%).