Average Weather in Wan’an China
In Wan’an, the summers are hot, 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 32°F to 89°F and is rarely below 24°F or above 92°F.
Based on the tourism score, the best time of year to visit Wan’an for warm-weather activities is from early September to mid October.
The hot season lasts for 3.8 months, from May 27 to September 21, with an average daily high temperature above 81°F. The hottest day of the year is July 31, with an average high of 89°F and low of 76°F.
The cold season lasts for 2.9 months, from December 4 to March 1, with an average daily high temperature below 57°F. The coldest day of the year is January 19, with an average low of 32°F and high of 49°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
In Wan’an, 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 Wan’an begins around September 2 and lasts for 6.2 months, ending around March 8. On October 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 71% of the time, and overcast or mostly cloudy 29% of the time.
The cloudier part of the year begins around March 8 and lasts for 5.8 months, ending around September 2. On July 4, the cloudiest day of the year, the sky is overcast or mostly cloudy 78% of the time, and clear, mostly clear, or partly cloudy 22% 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 Wan’an varies significantly throughout the year.
The wetter season lasts 6.6 months, from February 18 to September 6, with a greater than 36% chance of a given day being a wet day. The chance of a wet day peaks at 56% on June 22.
The drier season lasts 5.4 months, from September 6 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 56% 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. Wan’an experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Wan’an. The most rain falls during the 31 days centered around June 24, with an average total accumulation of 12.2 inches.
The least rain falls around December 22, with an average total accumulation of 1.5 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall in Wan’an does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Wan’an varies significantly over the course of the year. In 2018, the shortest day is December 22, with 10 hours, 14 minutes of daylight; the longest day is June 21, with 14 hours, 4 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, 58 minutes later at 7:03 AM on January 10. The earliest sunset is at 5:07 PM on December 2, and the latest sunset is 2 hours, 5 minutes later at 7:11 PM on July 1.
Daylight saving time (DST) is not observed in Wan’an during 2018.
Sunrise & Sunset with Twilight
Wan’an experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 5.0 months, from May 5 to October 4, 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 25, with muggy conditions 100% of the time.
The least muggy day of the year is January 21, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed in Wan’an experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 3.4 months, from January 28 to May 9, with average wind speeds of more than 6.7 miles per hour. The windiest day of the year is March 10, with an average hourly wind speed of 7.5 miles per hour.
The calmer time of year lasts for 8.6 months, from May 9 to January 28. The calmest day of the year is August 25, with an average hourly wind speed of 5.9 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Wan’an varies throughout the year.
The wind is most often from the south for 1.5 months, from June 20 to August 3, with a peak percentage of 47% on July 11. The wind is most often from the east for 11 months, from August 3 to June 20, with a peak percentage of 42% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Wan’an 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 Wan’an for general outdoor tourist activities is from early September to mid October, with a peak score in the last 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 Wan’an for hot-weather activities is from mid July to early September, with a peak score in the third 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.
The growing season in Wan’an typically lasts for 8.4 months (258 days), from around March 10 to around November 24, rarely starting before February 19 or after March 29, and rarely ending before November 6 or after December 11.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Wan’an should appear around March 3, only rarely appearing before February 17 or after March 21.
Growing Degree Days
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 5.2 kWh. The brightest day of the year is June 1, with an average of 5.7 kWh.
The darker period of the year lasts for 3.0 months, from November 10 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 3.1 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Wan’an are 29.792 deg latitude, 118.215 deg longitude, and 509 ft elevation.
The topography within 2 miles of Wan’an contains only modest variations in elevation, with a maximum elevation change of 200 feet and an average elevation above sea level of 503 feet. Within 10 miles contains only modest variations in elevation (2,441 feet). Within 50 miles contains large variations in elevation (5,988 feet).
The area within 2 miles of Wan’an is covered by cropland (67%) and trees (22%), within 10 miles by trees (61%) and cropland (28%), and within 50 miles by trees (80%).
This report illustrates the typical weather in Wan’an, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Wan’an 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 Wan’an, according to the International Standard Atmosphere .
Time zones for aiports and weather stations are provided by AskGeo.com .