Average Weather in Korostyshiv Ukraine
In Korostyshiv, the summers are comfortable and partly cloudy and the winters are long, freezing, dry, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 20°F to 78°F and is rarely below 2°F or above 89°F.
Based on the tourism score, the best time of year to visit Korostyshiv for warm-weather activities is from mid June to late August.
The warm season lasts for 3.6 months, from May 19 to September 7, with an average daily high temperature above 68°F. The hottest day of the year is July 26, with an average high of 78°F and low of 59°F.
The cold season lasts for 3.9 months, from November 16 to March 12, with an average daily high temperature below 40°F. The coldest day of the year is February 2, with an average low of 20°F and high of 30°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
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
In Korostyshiv, 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 Korostyshiv begins around April 23 and lasts for 5.7 months, ending around October 14. On August 1, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 69% of the time, and overcast or mostly cloudy 31% of the time.
The cloudier part of the year begins around October 14 and lasts for 6.3 months, ending around April 23. On November 27, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% of the time.
Cloud Cover Categories
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. The chance of wet days in Korostyshiv varies throughout the year.
The wetter season lasts 2.8 months, from May 11 to August 5, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 35% on June 26.
The drier season lasts 9.2 months, from August 5 to May 11. The smallest chance of a wet day is 14% on March 6.
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 in Korostyshiv changes throughout the year.
Rain alone is the most common for 12 months, from January 12 to January 28 and from February 5 to January 10. The highest chance of a day with rain alone is 35% on June 26.
Snow alone is the most common for 1.4 weeks, from January 10 to January 12 and from January 28 to February 5. The highest chance of a day with snow alone is 7% on December 23.
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. Korostyshiv experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 9.7 months, from February 26 to December 17, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 27, with an average total accumulation of 2.7 inches.
The rainless period of the year lasts for 2.3 months, from December 17 to February 26. The least rain falls around January 15, with an average total accumulation of 0.3 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Korostyshiv experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.2 months, from October 26 to April 3, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 12, with an average total liquid-equivalent accumulation of 0.5 inches.
The snowless period of the year lasts for 6.7 months, from April 3 to October 26. The least snow falls around July 20, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Korostyshiv varies extremely over the course of the year. In 2020, the shortest day is December 21, with 8 hours, 1 minute of daylight; the longest day is June 21, with 16 hours, 26 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:52 AM on June 16, and the latest sunrise is 3 hours, 11 minutes later at 8:03 AM on January 1. The earliest sunset is at 4:00 PM on December 12, and the latest sunset is 5 hours, 18 minutes later at 9:18 PM on June 25.
Daylight saving time (DST) is observed in Korostyshiv during 2020, starting in the spring on March 29, lasting 6.9 months, and ending in the fall on October 25.
Sunrise & Sunset with Twilight and Daylight Saving Time
The figure below presents a compact representation of key lunar data for 2020. 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.
Moon Rise, Set & 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.
The perceived humidity level in Korostyshiv, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 3% of 3% throughout.
Humidity Comfort Levels
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 Korostyshiv experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 6.0 months, from October 12 to April 14, with average wind speeds of more than 9.6 miles per hour. The windiest day of the year is January 25, with an average hourly wind speed of 11.4 miles per hour.
The calmer time of year lasts for 6.0 months, from April 14 to October 12. The calmest day of the year is August 4, with an average hourly wind speed of 7.9 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Korostyshiv varies throughout the year.
The wind is most often from the south for 1.3 months, from April 2 to May 11, with a peak percentage of 29% on April 6. The wind is most often from the north for 1.3 months, from May 11 to June 21 and for 3.7 weeks, from July 16 to August 11, with a peak percentage of 34% on June 20. The wind is most often from the west for 3.6 weeks, from June 21 to July 16 and for 7.7 months, from August 11 to April 2, with a peak percentage of 36% on June 27.
Best Time of Year to Visit
To characterize how pleasant the weather is in Korostyshiv 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 Korostyshiv for general outdoor tourist activities is from mid June to late August, with a peak score in the first week of August.
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 Korostyshiv for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.
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 in Korostyshiv typically lasts for 5.8 months (177 days), from around April 21 to around October 15, rarely starting before April 1 or after May 8, and rarely ending before September 27 or after November 3.
Time Spent in Various Temperature Bands and the Growing Season
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.
Based on growing degree days alone, the first spring blooms in Korostyshiv should appear around April 27, only rarely appearing before April 17 or after May 9.
Growing Degree Days
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 extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.7 months, from April 29 to August 21, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is June 21, with an average of 6.5 kWh.
The darker period of the year lasts for 3.7 months, from October 26 to February 17, with an average daily incident shortwave energy per square meter below 1.9 kWh. The darkest day of the year is December 19, with an average of 0.8 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Korostyshiv are 50.317 deg latitude, 29.056 deg longitude, and 591 ft elevation.
The topography within 2 miles of Korostyshiv contains only modest variations in elevation, with a maximum elevation change of 200 feet and an average elevation above sea level of 597 feet. Within 10 miles also contains only modest variations in elevation (322 feet). Within 50 miles contains only modest variations in elevation (876 feet).
The area within 2 miles of Korostyshiv is covered by trees (46%), artificial surfaces (26%), and cropland (21%), within 10 miles by cropland (49%) and trees (41%), and within 50 miles by cropland (60%) and trees (27%).
This report illustrates the typical weather in Korostyshiv, 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, Gostomel Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Korostyshiv.
At a distance of 87 kilometers from Korostyshiv, 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 Korostyshiv 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 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 airports 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.