Average Weather in Van Turkey

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In Van, the summers are warm and clear; the winters are long, freezing, and partly cloudy; and it is dry year round. Over the course of the year, the temperature typically varies from 18°F to 81°F and is rarely below 6°F or above 86°F.

The warm season lasts for 3.3 months, from June 12 to September 20, with an average daily high temperature above 71°F. The hottest day of the year is August 2, with an average high of 81°F and low of 60°F.

The cold season lasts for 3.7 months, from November 30 to March 21, with an average daily high temperature below 43°F. The coldest day of the year is January 24, with an average low of 18°F and high of 34°F.

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.

In Van, 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 Van begins around May 25 and lasts for 4.5 months, ending around October 8. On August 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 99% of the time, and overcast or mostly cloudy 1% of the time.

The cloudier part of the year begins around October 8 and lasts for 7.5 months, ending around May 25. On March 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 44% of the time, and clear, mostly clear, or partly cloudy 56% 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 Van varies throughout the year.

The wetter season lasts 7.5 months, from October 12 to May 27, with a greater than 14% chance of a given day being a wet day. The chance of a wet day peaks at 25% on April 30.

The drier season lasts 4.5 months, from May 27 to October 12. The smallest chance of a wet day is 1% on August 22.

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 Van changes throughout the year.

Rain alone is the most common for 10 months, from February 19 to December 23. The highest chance of a day with rain alone is 25% on April 30.

Snow alone is the most common for 1.5 months, from December 23 to February 8. The highest chance of a day with snow alone is 7% on January 14.

Mixed snow and rain is the most common for 1.6 weeks, from February 8 to February 19. The highest chance of a day with mixed snow and rain is 6% on December 7.

Rainfall

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. Van experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.9 months, from September 18 to June 14, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around April 24, with an average total accumulation of 1.5 inches.

The rainless period of the year lasts for 3.1 months, from June 14 to September 18. The least rain falls around August 10, with an average total accumulation of 0.1 inches.

Snowfall

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. Van experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 5.1 months, from November 2 to April 5, 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 22, with an average total liquid-equivalent accumulation of 0.6 inches.

The snowless period of the year lasts for 6.9 months, from April 5 to November 2. The least snow falls around July 22, with an average total liquid-equivalent accumulation of 0.0 inches.

The length of the day in Van varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 29 minutes of daylight; the longest day is June 21, with 14 hours, 51 minutes of daylight.

The earliest sunrise is at 4:41 AM on June 14, and the latest sunrise is 2 hours, 42 minutes later at 7:24 AM on January 5. The earliest sunset is at 4:45 PM on December 7, and the latest sunset is 2 hours, 49 minutes later at 7:34 PM on June 28.

Daylight saving time (DST) is not observed in Van during 2017.

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 Van, 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, remaining a virtually constant 0% throughout.

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 Van experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.3 months, from February 17 to June 27, with average wind speeds of more than 3.9 miles per hour. The windiest day of the year is April 18, with an average hourly wind speed of 4.6 miles per hour.

The calmer time of year lasts for 7.6 months, from June 27 to February 17. The calmest day of the year is December 19, with an average hourly wind speed of 3.3 miles per hour.

The predominant average hourly wind direction in Van varies throughout the year.

The wind is most often from the west for 2.9 weeks, from March 23 to April 12; for 1.5 months, from May 7 to June 23; and for 1.9 months, from August 11 to October 9, with a peak percentage of 44% on September 16. The wind is most often from the south for 3.6 weeks, from April 12 to May 7 and for 5.5 months, from October 9 to March 23, with a peak percentage of 44% on April 24. The wind is most often from the east for 1.6 months, from June 23 to August 11, with a peak percentage of 39% on July 9.

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 3.2 months, from May 20 to August 26, with an average daily incident shortwave energy per square meter above 7.4 kWh. The brightest day of the year is July 4, with an average of 8.7 kWh.

The darker period of the year lasts for 3.6 months, from October 27 to February 15, with an average daily incident shortwave energy per square meter below 3.8 kWh. The darkest day of the year is December 23, with an average of 2.6 kWh.

For the purposes of this report, the geographical coordinates of Van are 38.495 deg latitude, 43.383 deg longitude, and 5,640 ft elevation.

The topography within 2 miles of Van contains very significant variations in elevation, with a maximum elevation change of 991 feet and an average elevation above sea level of 5,623 feet. Within 10 miles contains very significant variations in elevation (5,056 feet). Within 50 miles also contains extreme variations in elevation (9,295 feet).

The area within 2 miles of Van is covered by artificial surfaces (89%) and sparse vegetation (11%), within 10 miles by cropland (28%) and sparse vegetation (21%), and within 50 miles by sparse vegetation (24%) and cropland (22%).

This report illustrates the typical weather in Van, 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 Van.

For each station, the records are corrected for the elevation difference between that station and Van 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 Van is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Van and a given station.

The stations contributing to this reconstruction are: Van Ferit Melen Airport (99%, 5.4 kilometers, southwest) and Khoy Airport (1.1%, 139 kilometers, east).

Other Data

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.