1. WeatherSpark.com
  2. Armenia

Average Weather at Zvartnots International Airport Armenia

At Zvartnots International Airport, the summers are hot and clear; the winters are short, freezing, and partly cloudy; and it is dry year round. Over the course of the year, the temperature typically varies from 20°F to 94°F and is rarely below 9°F or above 101°F.

Based on the beach/pool score, the best time of year to visit Zvartnots International Airport for hot-weather activities is from late June to early September.

Climate Summary

very coldcoldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow98%98%53%53%clearovercastprecipitation: 1.1 inprecipitation: 1.1 in0.3 in0.3 inmuggy: 1%muggy: 1%0%0%drydrybeach/pool score: 8.7beach/pool score: 8.70.00.0
Click on each chart for more information.

Temperature

The hot season lasts for 3.5 months, from June 1 to September 17, with an average daily high temperature above 82°F. The hottest day of the year is July 23, with an average high of 94°F and low of 68°F.

The cold season lasts for 2.9 months, from November 29 to February 23, with an average daily high temperature below 47°F. The coldest day of the year is January 14, with an average low of 20°F and high of 35°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature at Zvartnots International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMNowNowfreezingfreezingfreezingvery coldcoldcoldcoolcomfortablewarmwarmhotcoolvery coldfreezing
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
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Loma, Colorado, United States (6,707 miles away) and Stockton, Kansas, United States (6,487 miles) are the far-away foreign places with temperatures most similar to Zvartnots International Airport (view comparison).

Clouds

At Zvartnots International Airport, 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 at Zvartnots International Airport begins around May 30 and lasts for 4.2 months, ending around October 6. On August 16, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 98% of the time, and overcast or mostly cloudy 2% of the time.

The cloudier part of the year begins around October 6 and lasts for 7.8 months, ending around May 30. On April 10, the cloudiest day of the year, the sky is overcast or mostly cloudy 47% of the time, and clear, mostly clear, or partly cloudy 53% of the time.

Cloud Cover Categories

Cloud Cover Categories at Zvartnots International AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 1698%Aug 1698%Apr 1053%Apr 1053%May 3074%May 3074%Oct 675%Oct 675%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Zvartnots International Airport varies throughout the year.

The wetter season lasts 2.7 months, from April 6 to June 26, with a greater than 15% chance of a given day being a wet day. The chance of a wet day peaks at 24% on May 5.

The drier season lasts 9.3 months, from June 26 to April 6. The smallest chance of a wet day is 6% on August 26.

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 at Zvartnots International Airport changes throughout the year.

Rain alone is the most common for 10 months, from February 6 to December 20. The highest chance of a day with rain alone is 24% on May 5.

Snow alone is the most common for 1.6 months, from December 20 to February 6. The highest chance of a day with snow alone is 4% on January 9.

Daily Chance of Precipitation

Daily Chance of Precipitation at Zvartnots International AirportsnowrainJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%May 524%May 524%Aug 266%Aug 266%Feb 67%Feb 67%Dec 207%Dec 207%Jun 2615%Jun 2615%NowNowrainsnow
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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. Zvartnots International Airport experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.7 months, from March 22 to November 12, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 11, with an average total accumulation of 1.1 inches.

The rainless period of the year lasts for 4.3 months, from November 12 to March 22. The least rain falls around January 18, with an average total accumulation of 0.1 inches.

Average Monthly Rainfall

Average Monthly Rainfall at Zvartnots International AirportrainJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 inMay 111.1 inMay 111.1 inJan 180.1 inJan 180.1 inOct 260.7 inOct 260.7 inAug 270.3 inAug 270.3 inMar 220.5 inMar 220.5 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall at Zvartnots International Airport does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall at Zvartnots International AirportsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.2 in0.4 in0.6 in0.8 in1.0 in1.2 inJan 20.2 inJan 20.2 inJul 130.0 inJul 130.0 inNov 300.1 inNov 300.1 inFeb 200.1 inFeb 200.1 inNowNow
The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Sun

The length of the day at Zvartnots International Airport varies significantly over the course of the year. In 2020, the shortest day is December 21, with 9 hours, 19 minutes of daylight; the longest day is June 21, with 15 hours, 2 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Zvartnots International AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2015 hr, 2 minJun 2115 hr, 2 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 19 minDec 219 hr, 19 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:32 AM on June 14, and the latest sunrise is 2 hours, 52 minutes later at 8:24 AM on January 4. The earliest sunset is at 5:36 PM on December 8, and the latest sunset is 2 hours, 59 minutes later at 8:35 PM on June 27.

Daylight saving time (DST) is not observed at Zvartnots International Airport during 2020.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight at Zvartnots International AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:32 AMJun 145:32 AM8:35 PMJun 278:35 PMJun 27Dec 85:36 PMDec 85:36 PM8:24 AMJan 48:24 AMJan 4daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2020. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

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 at Zvartnots International Airport, 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

Humidity Comfort Levels at Zvartnots International AirportJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Mar 260%Mar 260%Aug 31%Aug 31%NowNowdrydrycomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

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 at Zvartnots International Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.5 months, from February 6 to September 22, with average wind speeds of more than 4.9 miles per hour. The windiest day of the year is July 22, with an average hourly wind speed of 5.9 miles per hour.

The calmer time of year lasts for 4.4 months, from September 22 to February 6. The calmest day of the year is December 30, with an average hourly wind speed of 3.9 miles per hour.

Average Wind Speed

Average Wind Speed at Zvartnots International AirportwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph1 mph2 mph3 mph4 mph5 mph6 mph7 mph8 mph9 mph10 mph11 mphJul 225.9 mphJul 225.9 mphDec 303.9 mphDec 303.9 mphFeb 64.9 mphFeb 64.9 mphSep 224.9 mphSep 224.9 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at Zvartnots International Airport varies throughout the year.

The wind is most often from the west for 3.7 months, from January 29 to May 20, with a peak percentage of 38% on April 5. The wind is most often from the east for 8.3 months, from May 20 to January 29, with a peak percentage of 36% on January 1.

Wind Direction

Wind Direction at Zvartnots International AirportEWEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastnorthsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Best Time of Year to Visit

To characterize how pleasant the weather is at Zvartnots International Airport 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 times of year to visit Zvartnots International Airport for general outdoor tourist activities are from late May to late June and from late August to late September, with a peak score in the second week of September.

Tourism Score

Tourism Score at Zvartnots International AirportJanFebMarAprMayJunJulAugSepOctNovDec02468108.28.20.00.07.77.76.66.6NowNow precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 Zvartnots International Airport for hot-weather activities is from late June to early September, with a peak score in the second week of August.

Beach/Pool Score

Beach/Pool Score at Zvartnots International Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468108.78.70.00.0NowNow precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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.

Growing Season

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 at Zvartnots International Airport typically lasts for 7.1 months (218 days), from around March 29 to around November 3, rarely starting before March 13 or after April 17, and rarely ending before October 16 or after November 19.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at Zvartnots International Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 2950%Mar 2950%Nov 350%Nov 390%Apr 1790%Apr 1790%Oct 1690%Oct 1610%Mar 1310%Mar 1310%Nov 1910%Nov 190%Jan 310%Jan 31Jul 15100%Jul 15100%NowNowfreezingvery coldcoolcomfortablewarmhotcoldfrigid
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
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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 at Zvartnots International Airport should appear around April 3, only rarely appearing before March 23 or after April 17.

Growing Degree Days

Growing Degree Days at Zvartnots International AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F500°F1,000°F1,500°F2,000°F2,500°F3,000°F3,500°F4,000°FApr 388°FApr 388°FJun 9900°FJun 9900°FJul 141,800°FJul 141,800°FDec 314,021°FDec 314,021°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 19 to August 25, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest day of the year is July 4, with an average of 8.0 kWh.

The darker period of the year lasts for 3.5 months, from October 29 to February 13, with an average daily incident shortwave energy per square meter below 3.4 kWh. The darkest day of the year is December 21, with an average of 2.2 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Zvartnots International AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWh10 kWhJul 48.0 kWhJul 48.0 kWhDec 212.2 kWhDec 212.2 kWhMay 196.9 kWhMay 196.9 kWhAug 256.9 kWhAug 256.9 kWhOct 293.4 kWhOct 293.4 kWhFeb 133.4 kWhFeb 133.4 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Zvartnots International Airport are 40.153 deg latitude, 44.402 deg longitude, and 2,864 ft elevation.

The topography within 2 miles of Zvartnots International Airport contains only modest variations in elevation, with a maximum elevation change of 371 feet and an average elevation above sea level of 2,856 feet. Within 10 miles contains only modest variations in elevation (1,873 feet). Within 50 miles contains very significant variations in elevation (14,206 feet).

The area within 2 miles of Zvartnots International Airport is covered by cropland (43%), grassland (18%), trees (16%), and shrubs (14%), within 10 miles by cropland (38%) and grassland (21%), and within 50 miles by cropland (25%) and trees (16%).

Data Sources

This report illustrates the typical weather at Zvartnots International Airport, 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

Zvartnots International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back are Erebuni Airport, Shirak Airport, Kars Airport, Nakhchivan International Airport, and Tbilisi.

Other Data

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 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.

Disclaimer

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.