Average Weather in Katowice Poland
In Katowice, the temperature typically varies from 24°F to 75°F over the course of the year, and is rarely below 6°F or above 86°F.
The warm season lasts for 109 days, from May 23 to September 9, with an average daily high temperature above 67°F. The hottest day of the year is August 6, with an average high of 75°F and low of 55°F.
The cold season lasts for 108 days, from November 20 to March 8, with an average daily high temperature below 42°F. The coldest day of the year is January 20, with an average low of 24°F and high of 34°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
The length of the day in Katowice varies extremely over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 2 minutes of daylight; the longest day is June 21, with 16 hours, 25 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:32 AM on June 16, and the latest sunrise is 3 hours, 11 minutes later at 7:43 AM on December 31. The earliest sunset is at 3:40 PM on December 12, and the latest sunset is 5 hours, 18 minutes later at 8:58 PM on June 25.
Daylight saving time (DST) is observed in Katowice during 2017, starting in the spring on March 26, lasting 216 days, and ending in the fall on October 29.
Sunrise & Sunset with Twilight and Daylight Saving Time
In Katowice, 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 Katowice begins around April 18 and lasts for 176 days, ending around October 11. On August 11, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 60% of the time, and overcast or mostly cloudy 40% of the time.
The cloudier part of the year begins around October 11 and lasts for 189 days, ending around April 18. On December 1, the cloudiest day of the year, the sky is overcast or mostly cloudy 68% of the time, and clear, mostly clear, or partly cloudy 32% 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 in Katowice varies throughout the year.
The wetter season lasts 122 days, from May 6 to September 5, with a greater than 27% chance of a given day being a wet day. The chance of a wet day peaks at 36% on July 4.
The drier season lasts 243 days, from September 5 to May 6. The smallest chance of a wet day is 18% on January 4.
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 36% on July 4.
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 in the year. Katowice experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Katowice. The most rain falls during the 31 days centered around July 8, with an average total accumulation of 3.0 inches.
The least rain falls around February 3, with and average total accumulation of 0.6 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 in the year. Katowice experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 141 days, from November 10 to March 31, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 2, with an average total liquid-equivalent accumulation of 0.3 inches.
The snowless period of the year lasts for 224 days, from March 31 to November 10. The least snow falls around July 15, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
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 Katowice, 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 1% of 1% throughout.
Humidity Comfort Levels
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 Katowice experiences mildly seasonal variation over the course of the year.
The windier part of the year lasts for 169 days, from October 21 to April 8, with average wind speeds of more than 5.1 miles per hour. The windiest day of the year is January 24, with an average hourly wind speed of 6.1 miles per hour.
The calmer time of year lasts for 196 days, from April 8 to October 21. The calmest day of the year is July 28, with an average hourly wind speed of 4.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Katowice varies throughout the year.
The wind is most often from the east for 16 days, from April 23 to May 9, with a peak percentage of 27% on April 29. The wind is most often from the west for 167 days, from May 9 to October 23 and for 148 days, from November 26 to April 23, with a peak percentage of 43% on July 7. The wind is most often from the south for 34 days, from October 23 to November 26, with a peak percentage of 38% on October 29.
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 very significant seasonal variation over the course of the year.
The brighter period of the year lasts for 112 days, from April 29 to August 19, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is June 27, with an average of 6.4 kWh.
The darker period of the year lasts for 114 days, from October 27 to February 18, with an average daily incident shortwave energy per square meter below 1.9 kWh. The darkest day of the year is December 22, with an average of 0.8 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Katowice are 50.258 deg latitude, 19.028 deg longitude, and 912 ft elevation (map ).
The topography within 2 miles of Katowice contains only modest variations in elevation, with a maximum elevation change of 230 feet, and an average elevation above sea level of 911 feet. Within 10 miles contains significant variations in elevation (522 feet). Within 50 miles contains extreme variations in elevation (3,967 feet).
The area within 2 miles of Katowice is covered by artificial surfaces (87%) and trees (11%), within 10 miles by artificial surfaces (46%) and trees (25%), and within 50 miles by cropland (48%) and trees (33%).
This report illustrates the typical weather in Katowice, 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 are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Katowice.
For each station, the records are corrected for the elevation difference between that station and Katowice according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Katowice is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Katowice and a given station.
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 .