Average Weather in Rize Turkey

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In Rize, the summers are warm, humid, and clear and the winters are long, chilly, and partly cloudy. Over the course of the year, the temperature typically varies from 37°F to 81°F and is rarely below 28°F or above 86°F.

The warm season lasts for 3.2 months, from June 14 to September 20, with an average daily high temperature above 74°F. The hottest day of the year is August 5, with an average high of 81°F and low of 70°F.

The cool season lasts for 3.8 months, from December 3 to March 27, with an average daily high temperature below 55°F. The coldest day of the year is January 28, with an average low of 37°F and high of 48°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 Rize, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Rize begins around June 5 and lasts for 3.7 months, ending around September 27. On August 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 96% of the time, and overcast or mostly cloudy 4% of the time.

The cloudier part of the year begins around September 27 and lasts for 8.3 months, ending around June 5. On January 17, the cloudiest day of the year, the sky is overcast or mostly cloudy 62% of the time, and clear, mostly clear, or partly cloudy 38% 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 Rize varies throughout the year.

The wetter season lasts 7.5 months, from September 15 to April 30, with a greater than 28% chance of a given day being a wet day. The chance of a wet day peaks at 39% on October 29.

The drier season lasts 4.5 months, from April 30 to September 15. The smallest chance of a wet day is 16% on July 27.

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 39% on October 29.

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. Rize experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Rize. The most rain falls during the 31 days centered around October 31, with an average total accumulation of 4.4 inches.

The least rain falls around July 24, with an average total accumulation of 1.2 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. Rize experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 2.9 months, from December 16 to March 12, 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 29, with an average total liquid-equivalent accumulation of 0.3 inches.

The snowless period of the year lasts for 9.1 months, from March 12 to December 16. The least snow falls around July 28, with an average total liquid-equivalent accumulation of 0.0 inches.

The length of the day in Rize varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 13 minutes of daylight; the longest day is June 21, with 15 hours, 8 minutes of daylight.

The earliest sunrise is at 4:45 AM on June 15, and the latest sunrise is 2 hours, 58 minutes later at 7:43 AM on January 5. The earliest sunset is at 4:49 PM on December 8, and the latest sunset is 3 hours, 5 minutes later at 7:54 PM on June 27.

Daylight saving time (DST) is not observed in Rize 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.

Rize experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.7 months, from June 21 to September 13, during which time the comfort level is muggy, oppressive, or miserable at least 14% of the time. The muggiest day of the year is August 5, with muggy conditions 53% of the time.

The least muggy day of the year is March 5, when muggy conditions are essentially unheard of.

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

The windier part of the year lasts for 4.4 months, from November 10 to March 21, with average wind speeds of more than 3.2 miles per hour. The windiest day of the year is January 31, with an average hourly wind speed of 4.0 miles per hour.

The calmer time of year lasts for 7.6 months, from March 21 to November 10. The calmest day of the year is May 10, with an average hourly wind speed of 2.3 miles per hour.

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

The wind is most often from the north for 6.2 months, from April 22 to October 27, with a peak percentage of 72% on August 19. The wind is most often from the south for 5.8 months, from October 27 to April 22, with a peak percentage of 58% on January 1.

Rize 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 water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.4 months, from June 20 to October 2, with an average temperature above 71°F. The day of the year with the warmest water is August 15, with an average temperature of 78°F.

The time of year with cooler water lasts for 4.0 months, from December 22 to April 23, with an average temperature below 53°F. The day of the year with the coolest water is March 5, with an average temperature of 47°F.

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 3.4 months, from May 9 to August 22, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest day of the year is July 3, with an average of 7.2 kWh.

The darker period of the year lasts for 3.5 months, from October 28 to February 14, with an average daily incident shortwave energy per square meter below 2.9 kWh. The darkest day of the year is December 23, with an average of 1.8 kWh.

For the purposes of this report, the geographical coordinates of Rize are 41.021 deg latitude, 40.522 deg longitude, and 367 ft elevation.

The topography within 2 miles of Rize contains very significant variations in elevation, with a maximum elevation change of 1,506 feet and an average elevation above sea level of 395 feet. Within 10 miles contains very significant variations in elevation (4,875 feet). Within 50 miles also contains extreme variations in elevation (12,818 feet).

The area within 2 miles of Rize is covered by cropland (37%), water (33%), and trees (21%), within 10 miles by water (44%) and trees (31%), and within 50 miles by water (44%) and trees (26%).

This report illustrates the typical weather in Rize, 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 Rize.

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

The stations contributing to this reconstruction are: Trabzon Airport (71%, 62 kilometers, west) and Batumi International Airport (29%, 111 kilometers, northeast).

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.