Average Weather in October in Chengdu China
In Chengdu, the month of October is characterized by falling daily high temperatures, with daily highs decreasing by 8°F, from 73°F to 66°F over the course of the month, and rarely exceeding 82°F or dropping below 59°F.
Daily low temperatures decrease by 8°F, from 63°F to 55°F, rarely falling below 49°F or exceeding 67°F.
For reference, on August 1, the hottest day of the year, temperatures in Chengdu typically range from 73°F to 87°F, while on January 14, the coldest day of the year, they range from 37°F to 48°F.
Average High and Low Temperature in October
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in October
The month of October in Chengdu experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 42% to 30%.
The clearest day of the month is October 31, with clear, mostly clear, or partly cloudy conditions 70% of the time.
For reference, on July 4, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 62%, while on December 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 78%.
Cloud Cover Categories in October
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Chengdu, the chance of a wet day over the course of October is very rapidly decreasing, starting the month at 29% and ending it at 10%.
For reference, the year's highest daily chance of a wet day is 55% on August 9, and its lowest chance is 1% on January 11.
Probability of Precipitation in October
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during October in Chengdu is rapidly decreasing, starting the month at 2.3 inches, when it rarely exceeds 3.7 inches or falls below 1.0 inches, and ending the month at 0.6 inches, when it rarely exceeds 1.1 inches or falls below 0.2 inches.
Average Monthly Rainfall in October
Over the course of October in Chengdu, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 53 minutes, implying an average daily decrease of 1 minute, 46 seconds, and weekly decrease of 12 minutes, 21 seconds.
The shortest day of the month is October 31, with 10 hours, 59 minutes of daylight and the longest day is October 1, with 11 hours, 52 minutes of daylight.
Hours of Daylight and Twilight in October
The earliest sunrise of the month in Chengdu is 6:57 AM on October 1 and the latest sunrise is 20 minutes later at 7:17 AM on October 31.
The latest sunset is 6:49 PM on October 1 and the earliest sunset is 32 minutes earlier at 6:16 PM on October 31.
Daylight saving time is not observed in Chengdu during 2017.
For reference, on June 21, the longest day of the year, the Sun rises at 6:01 AM and sets 14 hours, 8 minutes later, at 8:09 PM, while on December 21, the shortest day of the year, it rises at 7:56 AM and sets 10 hours, 10 minutes later, at 6:06 PM.
Sunrise & Sunset with Twilight in October
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.
The chance that a given day will be muggy in Chengdu is very rapidly decreasing during October, falling from 21% to 0% over the course of the month.
For reference, on August 2, the muggiest day of the year, there are muggy conditions 98% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in October
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 Chengdu is essentially constant during October, remaining around 2.5 miles per hour throughout.
For reference, on May 2, the windiest day of the year, the daily average wind speed is 3.2 miles per hour, while on September 29, the calmest day of the year, the daily average wind speed is 2.5 miles per hour.
Average Wind Speed in October
Wind Direction in October
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 in Chengdu is gradually decreasing during October, falling by 0.7 kWh, from 4.3 kWh to 3.6 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in October
For the purposes of this report, the geographical coordinates of Chengdu are 30.667 deg latitude, 104.067 deg longitude, and 1,640 ft elevation.
The topography within 2 miles of Chengdu contains only modest variations in elevation, with a maximum elevation change of 154 feet and an average elevation above sea level of 1,641 feet. Within 10 miles also contains only modest variations in elevation (417 feet). Within 50 miles contains only modest variations in elevation (12,306 feet).
The area within 2 miles of Chengdu is covered by artificial surfaces (100%), within 10 miles by artificial surfaces (51%) and cropland (36%), and within 50 miles by cropland (53%) and trees (22%).
This report illustrates the typical weather in Chengdu year round, 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, Chengdu Shuangliu International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Chengdu.
At a distance of 15 kilometers from Chengdu, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Chengdu according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
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.