Average Weather in July in Boyu China
Daily high temperatures increase by 3°F, from 80°F to 83°F, rarely falling below 74°F or exceeding 89°F.
Daily low temperatures increase by 5°F, from 69°F to 74°F, rarely falling below 66°F or exceeding 78°F.
For reference, on August 2, the hottest day of the year, temperatures in Boyu typically range from 74°F to 83°F, while on January 19, the coldest day of the year, they range from 26°F to 35°F.
Average High and Low Temperature in July
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. 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 July
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 month of July in Boyu experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 49% throughout the month. The highest chance of overcast or mostly cloudy conditions is 51% on July 22.
The clearest day of the month is July 1, with clear, mostly clear, or partly cloudy conditions 53% of the time.
For reference, on July 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 51%, while on October 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.
Cloud Cover Categories in July
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Boyu, the chance of a wet day over the course of July is rapidly increasing, starting the month at 24% and ending it at 30%.
For reference, the year's highest daily chance of a wet day is 32% on July 23, and its lowest chance is 2% on January 25.
Probability of Precipitation in July
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 July in Boyu is rapidly increasing, starting the month at 3.9 inches, when it rarely exceeds 7.6 inches or falls below 1.1 inches, and ending the month at 5.5 inches, when it rarely exceeds 10.3 inches or falls below 2.1 inches.
The highest average 31-day accumulation is 5.5 inches on July 30.
Average Monthly Rainfall in July
Over the course of July in Boyu, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 37 minutes, implying an average daily decrease of 1 minute, 13 seconds, and weekly decrease of 8 minutes, 32 seconds.
The shortest day of the month is July 31, with 14 hours, 5 minutes of daylight and the longest day is July 1, with 14 hours, 42 minutes of daylight.
Hours of Daylight and Twilight in July
The earliest sunrise of the month in Boyu is 4:33 AM on July 1 and the latest sunrise is 21 minutes later at 4:54 AM on July 31.
The latest sunset is 7:15 PM on July 1 and the earliest sunset is 16 minutes earlier at 6:59 PM on July 31.
Daylight saving time is not observed in Boyu during 2020.
For reference, on June 20, the longest day of the year, the Sun rises at 4:29 AM and sets 14 hours, 45 minutes later, at 7:14 PM, while on December 21, the shortest day of the year, it rises at 7:01 AM and sets 9 hours, 35 minutes later, at 4:36 PM.
Sunrise & Sunset with Twilight in July
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 Boyu is very rapidly increasing during July, rising from 64% to 94% over the course of the month.
For reference, on August 1, the muggiest day of the year, there are muggy conditions 94% of the time, while on November 13, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in July
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Boyu is essentially constant during July, remaining within 0.1 miles per hour of 10.3 miles per hour throughout.
For reference, on December 10, the windiest day of the year, the daily average wind speed is 15.1 miles per hour, while on August 11, the calmest day of the year, the daily average wind speed is 9.9 miles per hour.
Average Wind Speed in July
The hourly average wind direction in Boyu throughout July is predominantly from the south, with a peak proportion of 54% on July 12.
Wind Direction in July
Boyu 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 surface water temperature in Boyu is increasing during July, rising by 6°F, from 69°F to 75°F, over the course of the month.
Average Water Temperature in July
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 Boyu typically lasts for 8.2 months (251 days), from around March 17 to around November 23, rarely starting before February 29 or after April 3, and rarely ending before November 7 or after December 8.
The month of July in Boyu is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in July
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
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.
The average accumulated growing degree days in Boyu are rapidly increasing during July, increasing by 790°F, from 1,156°F to 1,946°F, over the course of the month.
Growing Degree Days in July
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 Boyu is gradually decreasing during July, falling by 0.5 kWh, from 6.3 kWh to 5.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in July
For the purposes of this report, the geographical coordinates of Boyu are 37.378 deg latitude, 122.349 deg longitude, and 69 ft elevation.
The topography within 2 miles of Boyu contains significant variations in elevation, with a maximum elevation change of 499 feet and an average elevation above sea level of 90 feet. Within 10 miles contains significant variations in elevation (1,781 feet). Within 50 miles contains very significant variations in elevation (2,992 feet).
The area within 2 miles of Boyu is covered by cropland (71%) and artificial surfaces (11%), within 10 miles by water (39%) and cropland (37%), and within 50 miles by water (76%) and cropland (15%).
This report illustrates the typical weather in Boyu 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, Dalian Zhoushuizi International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Boyu.
At a distance of 190 kilometers from Boyu, further than our threshold of 150 kilometers, this station is deemed insufficiently nearby to be relied upon as our primary source for temperature and dew point records. Consequently, the station records are blended with interpolated values from NASA's MERRA-2 satellite-era reanalysis , and both are corrected for elevation differences according to the International Standard Atmosphere .
The weight assigned to the MERRA-2 value depends on the distance from Boyu to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 45%, making the weight assigned to the weather station 55%.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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.
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.