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  3. Viloyati Sughd

Climate and Average Weather Year Round in Oltintopkan Tajikistan

In Oltintopkan, the summers are warm, arid, and clear and the winters are freezing, snowy, and partly cloudy. Over the course of the year, the temperature typically varies from 17°F to 84°F and is rarely below 5°F or above 91°F.

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

Climate in Oltintopkan

freezingvery coldcoldcoolwarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow97%97%37%37%clearovercastprecipitation: 1.0 inprecipitation: 1.0 in0.0 in0.0 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 8.8tourism score: 8.80.00.0
Oltintopkan weather by month. Click on each chart for more information.

The warm season lasts for 3.7 months, from May 23 to September 12, with an average daily high temperature above 73°F. The hottest month of the year in Oltintopkan is July, with an average high of 84°F and low of 59°F.

The cold season lasts for 3.5 months, from November 21 to March 4, with an average daily high temperature below 40°F. The coldest month of the year in Oltintopkan is January, with an average low of 17°F and high of 29°F.

Average High and Low Temperature in Oltintopkan

Average High and Low Temperature in OltintopkanwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1429°FJan 1429°FJul 484°FJul 484°F17°F17°F59°F59°FMay 2373°FMay 2373°FSep 1273°FSep 1273°FNov 2140°FNov 2140°FMar 440°FMar 440°F50°F50°F48°F48°F25°F25°F24°F24°FNowNow
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.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 29°F33°F45°F60°F71°F81°F84°F81°F71°F57°F43°F32°F
Temp. 23°F26°F37°F50°F60°F69°F72°F69°F59°F46°F34°F25°F
Low 17°F20°F29°F40°F49°F56°F59°F55°F46°F36°F27°F19°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.

Average Hourly Temperature in Oltintopkan

Average Hourly Temperature in OltintopkanJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowfreezingfreezingvery coldvery coldcoldcoldcoolcomfortablewarmcomfortable
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.

Rochelle, Illinois, United States (6,584 miles away) is the far-away foreign place with temperatures most similar to Oltintopkan (view comparison).

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In Oltintopkan, 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 Oltintopkan begins around May 18 and lasts for 5.0 months, ending around October 16.

The clearest month of the year in Oltintopkan is August, during which on average the sky is clear, mostly clear, or partly cloudy 97% of the time.

The cloudier part of the year begins around October 16 and lasts for 7.0 months, ending around May 18.

The cloudiest month of the year in Oltintopkan is February, during which on average the sky is overcast or mostly cloudy 61% of the time.

Cloud Cover Categories in Oltintopkan

Cloud Cover Categories in OltintopkanclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 3097%Jul 3097%Feb 737%Feb 737%May 1867%May 1867%Oct 1668%Oct 1668%NowNowclearovercastmostly clearpartly cloudy
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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 61%61%59%49%34%13%4%3%10%32%50%56%
Clearer 39%39%41%51%66%87%96%97%90%68%50%44%

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

The wetter season lasts 7.0 months, from October 25 to May 26, with a greater than 11% chance of a given day being a wet day. The month with the most wet days in Oltintopkan is March, with an average of 5.9 days with at least 0.04 inches of precipitation.

The drier season lasts 5.0 months, from May 26 to October 25. The month with the fewest wet days in Oltintopkan is August, with an average of 0.4 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 Oltintopkan changes throughout the year.

Rain alone is the most common for 8.4 months, from March 8 to November 18. The month with the most days of rain alone in Oltintopkan is April, with an average of 4.5 days.

Snow alone is the most common for 3.6 months, from November 18 to March 8. The month with the most days of snow alone in Oltintopkan is January, with an average of 4.0 days.

Daily Chance of Precipitation in Oltintopkan

Daily Chance of Precipitation in OltintopkansnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 3020%Mar 3020%Aug 241%Aug 241%Nov 1815%Nov 1815%May 2611%May 2611%NowNowsnowrainmixed
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).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 0.2d0.9d3.1d4.5d3.9d1.6d0.9d0.4d0.9d2.0d1.7d0.5d
Mixed 0.3d0.8d1.0d0.4d0.1d0.0d0.0d0.0d0.1d0.6d1.0d0.9d
Snow 4.0d3.5d1.7d0.3d0.0d0.0d0.0d0.0d0.0d0.4d1.6d3.3d
Any 4.6d5.1d5.9d5.2d4.0d1.6d0.9d0.4d1.0d2.9d4.3d4.7d

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. Oltintopkan experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 2.6 months, from March 9 to May 29, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Oltintopkan is April, with an average rainfall of 0.9 inches.

The rainless period of the year lasts for 9.4 months, from May 29 to March 9. The month with the least rain in Oltintopkan is August, with an average rainfall of 0.0 inches.

Average Monthly Rainfall in Oltintopkan

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 snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.1″0.2″0.6″0.9″0.7″0.2″0.1″0.0″0.1″0.3″0.4″0.2″

Snowfall

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

The snowy period of the year lasts for 6.2 months, from October 9 to April 14, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Oltintopkan is February, with an average snowfall of 6.7 inches.

The snowless period of the year lasts for 5.8 months, from April 14 to October 9. The least snow falls around July 19, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Oltintopkan

Average Monthly Snowfall in OltintopkansnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inFeb 76.9 inFeb 76.9 inJul 190.0 inJul 190.0 inDec 216.4 inDec 216.4 inOct 91.0 inOct 91.0 inApr 141.0 inApr 141.0 in
The average 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 6.2″6.7″4.0″0.9″0.1″0.0″0.0″0.0″0.1″1.5″3.6″6.3″

The length of the day in Oltintopkan varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 16 minutes of daylight; the longest day is June 21, with 15 hours, 5 minutes of daylight.

Hours of Daylight and Twilight in Oltintopkan

Hours of Daylight and Twilight in OltintopkanJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2015 hr, 5 minJun 2115 hr, 5 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 16 minDec 219 hr, 16 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.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 9.6h10.7h12.0h13.3h14.5h15.0h14.7h13.7h12.4h11.1h9.9h9.3h

The earliest sunrise is at 4:50 AM on June 14, and the latest sunrise is 2 hours, 56 minutes later at 7:45 AM on January 5. The earliest sunset is at 4:54 PM on December 8, and the latest sunset is 3 hours, 3 minutes later at 7:56 PM on June 27.

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

Sunrise & Sunset with Twilight in Oltintopkan

Sunrise & Sunset with Twilight in OltintopkanJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 144:50 AMJun 144:50 AM7:56 PMJun 277:56 PMJun 27Dec 84:54 PMDec 84:54 PM7:45 AMJan 57:45 AMJan 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. 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.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in Oltintopkan

Solar Elevation and Azimuth in OltintopkanJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM000010101010202020203030303040404050506060700000101010102020202030303040405050602673NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

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.

Moon Rise, Set & Phases in Oltintopkan

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

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 Oltintopkan, 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.

Humidity Comfort Levels in Oltintopkan

Humidity Comfort Levels in OltintopkanJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 190%Jan 190%Aug 50%Aug 50%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.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

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

The windier part of the year lasts for 2.8 months, from May 28 to August 21, with average wind speeds of more than 6.6 miles per hour. The windiest month of the year in Oltintopkan is July, with an average hourly wind speed of 7.2 miles per hour.

The calmer time of year lasts for 9.2 months, from August 21 to May 28. The calmest month of the year in Oltintopkan is October, with an average hourly wind speed of 5.8 miles per hour.

Average Wind Speed in Oltintopkan

Average Wind Speed in OltintopkanwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphJul 107.3 mphJul 107.3 mphOct 275.8 mphOct 275.8 mphMay 286.6 mphMay 286.6 mphAug 216.6 mphAug 216.6 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 6.26.66.76.66.56.97.26.76.15.85.96.2

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

The wind is most often from the west for 7.2 months, from March 14 to October 20, with a peak percentage of 62% on July 31. The wind is most often from the east for 4.8 months, from October 20 to March 14, with a peak percentage of 46% on January 1.

Wind Direction in Oltintopkan

Wind Direction in OltintopkanEWEJanFebMarAprMayJunJulAugSepOctNovDec0%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).

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

Tourism Score in Oltintopkan

Tourism Score in Oltintopkanbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.88.80.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism 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 Oltintopkan for hot-weather activities is from late June to early August, with a peak score in the first week of July.

Beach/Pool Score in Oltintopkan

Beach/Pool Score in Oltintopkanbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.36.30.00.0NowNow cloudscloudsprecipitationprecipitationbeach/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.

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 Oltintopkan typically lasts for 5.9 months (180 days), from around April 14 to around October 11, rarely starting before March 25 or after May 8, and rarely ending before September 24 or after October 29.

Time Spent in Various Temperature Bands and the Growing Season in Oltintopkan

Time Spent in Various Temperature Bands and the Growing Season in Oltintopkangrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 1450%Apr 1450%Oct 1150%Oct 1150%May 890%May 890%Sep 2490%Sep 2490%Mar 2510%Mar 2510%Oct 2910%Oct 2910%Jul 17100%Jul 17100%NowNowfrigidfreezingvery coldcoldcoolcomfortablewarmhot
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 in Oltintopkan should appear around April 21, only rarely appearing before April 12 or after May 4.

Growing Degree Days in Oltintopkan

Growing Degree Days in OltintopkanJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FApr 2190°FApr 2190°FJun 23900°FJun 23900°FAug 41,800°FAug 41,800°FDec 312,678°FDec 312,678°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

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 3.3 months, from May 15 to August 25, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest month of the year in Oltintopkan is July, with an average of 8.2 kWh.

The darker period of the year lasts for 3.8 months, from October 30 to February 21, with an average daily incident shortwave energy per square meter below 3.2 kWh. The darkest month of the year in Oltintopkan is December, with an average of 1.9 kWh.

Average Daily Incident Shortwave Solar Energy in Oltintopkan

Average Daily Incident Shortwave Solar Energy in OltintopkanbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJun 268.4 kWhJun 268.4 kWhDec 231.9 kWhDec 231.9 kWhMay 157.1 kWhMay 157.1 kWhAug 257.1 kWhAug 257.1 kWhOct 303.2 kWhOct 303.2 kWhFeb 213.2 kWhFeb 213.2 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 2.13.04.25.87.18.18.27.45.94.02.51.9

For the purposes of this report, the geographical coordinates of Oltintopkan are 40.654 deg latitude, 69.598 deg longitude, and 4,131 ft elevation.

The topography within 2 miles of Oltintopkan contains large variations in elevation, with a maximum elevation change of 2,799 feet and an average elevation above sea level of 4,470 feet. Within 10 miles contains large variations in elevation (5,774 feet). Within 50 miles also contains extreme variations in elevation (11,512 feet).

The area within 2 miles of Oltintopkan is covered by sparse vegetation (45%), bare soil (18%), grassland (14%), and trees (11%), within 10 miles by sparse vegetation (52%) and bare soil (26%), and within 50 miles by cropland (38%) and bare soil (29%).

This report illustrates the typical weather in Oltintopkan, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Oltintopkan.

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

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Oltintopkan and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

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 airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

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.

Please review our full terms contained on our Terms of Service page.