Climate and Average Weather Year Round in Diyadin Turkey

In Diyadin, the summers are warm, dry, and clear and the winters are freezing, snowy, and partly cloudy. Over the course of the year, the temperature typically varies from 11°F to 80°F and is rarely below 1°F or above 86°F.

Based on the tourism score, the best time of year to visit Diyadin for warm-weather activities is from late June to early September.

The warm season lasts for 3.2 months, from June 11 to September 18, with an average daily high temperature above 69°F. The hottest month of the year in Diyadin is July, with an average high of 79°F and low of 53°F.

The cold season lasts for 3.3 months, from November 30 to March 7, with an average daily high temperature below 37°F. The coldest month of the year in Diyadin is January, with an average low of 12°F and high of 27°F.

In Diyadin, 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 Diyadin begins around May 28 and lasts for 4.3 months, ending around October 7.

The clearest month of the year in Diyadin is August, during which on average the sky is clear, mostly clear, or partly cloudy 98% of the time.

The cloudier part of the year begins around October 7 and lasts for 7.7 months, ending around May 28.

The cloudiest month of the year in Diyadin is April, during which on average the sky is overcast or mostly cloudy 41% 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 Diyadin varies throughout the year.

The wetter season lasts 8.0 months, from October 15 to June 15, with a greater than 13% chance of a given day being a wet day. The month with the most wet days in Diyadin is May, with an average of 6.2 days with at least 0.04 inches of precipitation.

The drier season lasts 4.0 months, from June 15 to October 15. The month with the fewest wet days in Diyadin is August, with an average of 1.0 days with at least 0.04 inches of precipitation.

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 Diyadin changes throughout the year.

Rain alone is the most common for 8.2 months, from March 14 to November 20. The month with the most days of rain alone in Diyadin is May, with an average of 6.1 days.

Snow alone is the most common for 3.7 months, from November 20 to March 14. The month with the most days of snow alone in Diyadin is December, with an average of 2.3 days.

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. Diyadin experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.5 months, from March 25 to November 10, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Diyadin is May, with an average rainfall of 1.0 inches.

The rainless period of the year lasts for 4.5 months, from November 10 to March 25. The month with the least rain in Diyadin is January, with an average rainfall of 0.0 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Diyadin experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 5.7 months, from October 23 to April 12, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Diyadin is December, with an average snowfall of 4.0 inches.

The snowless period of the year lasts for 6.3 months, from April 12 to October 23. The least snow falls around August 3, with an average total accumulation of 0.0 inches.

The length of the day in Diyadin varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 22 minutes of daylight; the longest day is June 20, with 14 hours, 58 minutes of daylight.

The earliest sunrise is at 4:37 AM on June 13, and the latest sunrise is 2 hours, 49 minutes later at 7:26 AM on January 5. The earliest sunset is at 4:41 PM on December 7, and the latest sunset is 2 hours, 56 minutes later at 7:36 PM on June 27.

Daylight saving time (DST) is not observed in Diyadin during 2024.

The figure below presents a compact representation of key lunar data for 2024. 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.

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 Diyadin, 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 Diyadin experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.7 months, from December 16 to May 7, with average wind speeds of more than 7.6 miles per hour. The windiest month of the year in Diyadin is March, with an average hourly wind speed of 9.1 miles per hour.

The calmer time of year lasts for 7.3 months, from May 7 to December 16. The calmest month of the year in Diyadin is August, with an average hourly wind speed of 6.2 miles per hour.

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

The wind is most often from the east for 2.6 months, from June 14 to September 3, with a peak percentage of 54% on July 26. The wind is most often from the west for 9.4 months, from September 3 to June 14, with a peak percentage of 53% on January 1.

To characterize how pleasant the weather is in Diyadin 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 Diyadin for general outdoor tourist activities is from late June to early September, 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 Diyadin for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.

Methodology

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 Diyadin typically lasts for 5.3 months (162 days), from around May 4 to around October 13, rarely starting before April 12 or after May 23, and rarely ending before September 26 or after October 31.

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 Diyadin should appear around May 20, only rarely appearing before May 8 or after June 1.

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 3.1 months, from May 21 to August 26, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest month of the year in Diyadin is July, with an average of 8.2 kWh.

The darker period of the year lasts for 3.5 months, from October 28 to February 13, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest month of the year in Diyadin is December, with an average of 2.5 kWh.

For the purposes of this report, the geographical coordinates of Diyadin are 39.541 deg latitude, 43.671 deg longitude, and 6,325 ft elevation.

The topography within 2 miles of Diyadin contains very significant variations in elevation, with a maximum elevation change of 925 feet and an average elevation above sea level of 6,430 feet. Within 10 miles contains very significant variations in elevation (3,589 feet). Within 50 miles also contains extreme variations in elevation (14,091 feet).

The area within 2 miles of Diyadin is covered by cropland (70%) and artificial surfaces (17%), within 10 miles by grassland (33%) and cropland (32%), and within 50 miles by sparse vegetation (29%) and cropland (25%).