Climate and Average Weather Year Round at Changsha Huanghua International Airport China

At Changsha Huanghua International Airport, the summers are hot, oppressive, wet, and mostly cloudy and the winters are cold and partly cloudy. Over the course of the year, the temperature typically varies from 36°F to 94°F and is rarely below 29°F or above 99°F.

Based on the tourism score, the best time of year to visit Changsha Huanghua International Airport for warm-weather activities is from mid September to mid October.

The hot season lasts for 3.3 months, from June 5 to September 16, with an average daily high temperature above 85°F. The hottest month of the year at Changsha Huanghua International Airport is July, with an average high of 93°F and low of 78°F.

The cool season lasts for 3.0 months, from December 3 to March 4, with an average daily high temperature below 57°F. The coldest month of the year at Changsha Huanghua International Airport is January, with an average low of 37°F and high of 49°F.

At Changsha Huanghua International Airport, 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 at Changsha Huanghua International Airport begins around September 2 and lasts for 6.5 months, ending around March 19.

The clearest month of the year at Changsha Huanghua International Airport is December, 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 March 19 and lasts for 5.5 months, ending around September 2.

The cloudiest month of the year at Changsha Huanghua International Airport is July, during which on average the sky is overcast or mostly cloudy 71% 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 at Changsha Huanghua International Airport varies significantly throughout the year.

The wetter season lasts 6.2 months, from February 13 to August 20, with a greater than 33% chance of a given day being a wet day. The month with the most wet days at Changsha Huanghua International Airport is April, with an average of 14.6 days with at least 0.04 inches of precipitation.

The drier season lasts 5.8 months, from August 20 to February 13. The month with the fewest wet days at Changsha Huanghua International Airport is December, with an average of 5.4 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 at Changsha Huanghua International Airport is April, with an average of 14.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 50% on April 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. Changsha Huanghua International Airport experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year at Changsha Huanghua International Airport. The month with the most rain at Changsha Huanghua International Airport is June, with an average rainfall of 7.6 inches.

The month with the least rain at Changsha Huanghua International Airport is December, with an average rainfall of 1.4 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Changsha Huanghua International Airport experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 1.1 months, from January 9 to February 12, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Changsha Huanghua International Airport is January, with an average snowfall of 1.2 inches.

The snowless period of the year lasts for 11 months, from February 12 to January 9. The least snow falls around July 20, with an average total accumulation of 0.0 inches.

The length of the day at Changsha Huanghua International Airport varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 21 minutes of daylight; the longest day is June 21, with 13 hours, 56 minutes of daylight.

The earliest sunrise is at 5:29 AM on June 10, and the latest sunrise is 1 hour, 51 minutes later at 7:20 AM on January 12. The earliest sunset is at 5:30 PM on December 1, and the latest sunset is 1 hour, 57 minutes later at 7:28 PM on July 1.

Daylight saving time (DST) is not observed at Changsha Huanghua International Airport 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.

Changsha Huanghua International Airport experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 5.6 months, from April 20 to October 8, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The month with the most muggy days at Changsha Huanghua International Airport is July, with 30.9 days that are muggy or worse.

The month with the fewest muggy days at Changsha Huanghua International Airport 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 at Changsha Huanghua International Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 1.3 months, from June 17 to July 25, with average wind speeds of more than 7.0 miles per hour. The windiest month of the year at Changsha Huanghua International Airport 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 25 to June 17. The calmest month of the year at Changsha Huanghua International Airport is August, with an average hourly wind speed of 6.4 miles per hour.

The predominant average hourly wind direction at Changsha Huanghua International Airport varies throughout the year.

The wind is most often from the south for 1.0 months, from April 21 to May 21 and for 2.5 months, from May 30 to August 14, with a peak percentage of 64% on July 11. The wind is most often from the north for 1.3 weeks, from May 21 to May 30 and for 8.2 months, from August 14 to April 21, with a peak percentage of 34% on May 27.

To characterize how pleasant the weather is at Changsha Huanghua International Airport 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 Changsha Huanghua International Airport for general outdoor tourist activities is from mid September to mid October, with a peak score in the first 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 Changsha Huanghua International Airport for hot-weather activities is from mid August to late September, with a peak score in the first 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).

The growing season at Changsha Huanghua International Airport typically lasts for 9.9 months (299 days), from around February 17 to around December 12, rarely starting before January 23 or after March 11, and rarely ending before November 21 or after January 2.

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 at Changsha Huanghua International Airport should appear around February 27, only rarely appearing before February 10 or after March 16.

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 4.6 months, from May 2 to September 20, with an average daily incident shortwave energy per square meter above 5.1 kWh. The brightest month of the year at Changsha Huanghua International Airport is July, with an average of 5.5 kWh.

The darker period of the year lasts for 3.2 months, from November 10 to February 17, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest month of the year at Changsha Huanghua International Airport is January, with an average of 3.1 kWh.

For the purposes of this report, the geographical coordinates of Changsha Huanghua International Airport are 28.189 deg latitude, 113.220 deg longitude, and 210 ft elevation.

The topography within 2 miles of Changsha Huanghua International Airport contains only modest variations in elevation, with a maximum elevation change of 144 feet and an average elevation above sea level of 205 feet. Within 10 miles contains only modest variations in elevation (614 feet). Within 50 miles contains significant variations in elevation (5,207 feet).

The area within 2 miles of Changsha Huanghua International Airport is covered by cropland (45%) and trees (43%), within 10 miles by cropland (46%) and trees (42%), and within 50 miles by trees (59%) and cropland (26%).