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Climate and Average Weather Year Round in Kara-Kulja Kyrgyzstan

In Kara-Kulja, the summers are warm, arid, and mostly clear and the winters are freezing, snowy, and partly cloudy. Over the course of the year, the temperature typically varies from 14°F to 82°F and is rarely below 2°F or above 88°F.

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

Climate in Kara-Kulja

freezingvery coldcoldcoolwarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow93%93%30%30%clearovercastprecipitation: 1.0 inprecipitation: 1.0 in0.1 in0.1 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 8.4tourism score: 8.40.00.0
Kara-Kulja weather by month. Click on each chart for more information.

The warm season lasts for 3.7 months, from May 27 to September 18, with an average daily high temperature above 71°F. The hottest month of the year in Kara-Kulja is July, with an average high of 81°F and low of 57°F.

The cold season lasts for 3.3 months, from November 25 to March 4, with an average daily high temperature below 41°F. The coldest month of the year in Kara-Kulja is January, with an average low of 14°F and high of 31°F.

Average High and Low Temperature in Kara-Kulja

Average High and Low Temperature in Kara-KuljawarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1431°FJan 1431°FJul 2282°FJul 2282°F14°F14°F58°F58°FMay 2771°FMay 2771°FSep 1871°FSep 1871°FNov 2541°FNov 2541°FMar 441°FMar 441°F49°F49°F47°F47°F25°F25°F25°F25°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 31°F35°F46°F59°F68°F77°F81°F80°F72°F59°F45°F35°F
Temp. 22°F26°F38°F50°F58°F66°F70°F68°F60°F48°F36°F26°F
Low 14°F19°F31°F41°F47°F54°F57°F55°F48°F38°F28°F18°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 Kara-Kulja

Average Hourly Temperature in Kara-KuljaJanFebMarAprMayJunJulAugSepOctNovDec12 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 coldcoldcoldcoolcomfortablewarm
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.

Burlington, Wisconsin, United States (6,578 miles away) and Westhampton, Massachusetts, United States (6,340 miles) are the far-away foreign places with temperatures most similar to Kara-Kulja (view comparison).

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In Kara-Kulja, 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 Kara-Kulja begins around June 1 and lasts for 4.5 months, ending around October 15.

The clearest month of the year in Kara-Kulja is August, during which on average the sky is clear, mostly clear, or partly cloudy 93% of the time.

The cloudier part of the year begins around October 15 and lasts for 7.5 months, ending around June 1.

The cloudiest month of the year in Kara-Kulja is March, during which on average the sky is overcast or mostly cloudy 69% of the time.

Cloud Cover Categories in Kara-Kulja

Cloud Cover Categories in Kara-KuljaclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 993%Aug 993%Mar 530%Mar 530%Jun 161%Jun 161%Oct 1562%Oct 1562%NowNowclearovercastmostly clearmostly 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 66%68%69%60%49%26%10%7%15%39%56%61%
Clearer 34%32%31%40%51%74%90%93%85%61%44%39%

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

The wetter season lasts 7.7 months, from October 17 to June 7, with a greater than 10% chance of a given day being a wet day. The month with the most wet days in Kara-Kulja is April, with an average of 4.8 days with at least 0.04 inches of precipitation.

The drier season lasts 4.3 months, from June 7 to October 17. The month with the fewest wet days in Kara-Kulja is August, with an average of 0.9 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 Kara-Kulja changes throughout the year.

Rain alone is the most common for 9.2 months, from February 28 to December 5. The month with the most days of rain alone in Kara-Kulja is April, with an average of 4.5 days.

Snow alone is the most common for 2.8 months, from December 5 to February 28. The month with the most days of snow alone in Kara-Kulja is January, with an average of 2.0 days.

Daily Chance of Precipitation in Kara-Kulja

Daily Chance of Precipitation in Kara-KuljasnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 2417%Mar 2417%Sep 132%Sep 132%Dec 511%Dec 511%Oct 1710%Oct 1710%Jun 710%Jun 710%NowNowrainsnowmixed
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 0.2d0.9d3.3d4.5d4.3d2.3d1.4d0.9d0.9d2.5d2.4d0.8d
Mixed 0.3d0.7d0.7d0.3d0.0d0.0d0.0d0.0d0.0d0.2d0.7d0.6d
Snow 2.0d1.7d0.9d0.1d0.0d0.0d0.0d0.0d0.0d0.1d0.7d1.6d
Any 2.5d3.2d4.8d4.8d4.3d2.3d1.4d0.9d0.9d2.9d3.8d3.1d

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. Kara-Kulja experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.4 months, from March 9 to November 20, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Kara-Kulja is April, with an average rainfall of 1.0 inches.

The rainless period of the year lasts for 3.6 months, from November 20 to March 9. The month with the least rain in Kara-Kulja is January, with an average rainfall of 0.1 inches.

Average Monthly Rainfall in Kara-Kulja

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″1.0″0.9″0.4″0.2″0.1″0.2″0.5″0.5″0.2″

Snowfall

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

The snowy period of the year lasts for 5.2 months, from October 27 to April 1, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Kara-Kulja is February, with an average snowfall of 3.7 inches.

The snowless period of the year lasts for 6.8 months, from April 1 to October 27. The least snow falls around July 21, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Kara-Kulja

Average Monthly Snowfall in Kara-KuljasnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inFeb 133.7 inFeb 133.7 inJul 210.0 inJul 210.0 inOct 271.0 inOct 271.0 inApr 11.0 inApr 11.0 inNowNow
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 3.2″3.7″2.1″0.4″0.0″0.0″0.0″0.0″0.0″0.5″2.0″2.9″

The length of the day in Kara-Kulja 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 Kara-Kulja

Hours of Daylight and Twilight in Kara-KuljaJanFebMarAprMayJunJulAugSepOctNovDec0 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 5:34 AM on June 14, and the latest sunrise is 2 hours, 55 minutes later at 8:29 AM on January 5. The earliest sunset is at 5:38 PM on December 7, and the latest sunset is 3 hours, 2 minutes later at 8:40 PM on June 27.

Daylight saving time (DST) is not observed in Kara-Kulja during 2024.

Sunrise & Sunset with Twilight in Kara-Kulja

Sunrise & Sunset with Twilight in Kara-KuljaJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:34 AMJun 145:34 AM8:40 PMJun 278:40 PMJun 27Dec 75:38 PMDec 75:38 PM8:29 AMJan 58:29 AMJan 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
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 Kara-Kulja

Solar Elevation and Azimuth in Kara-KuljaJanFebMarAprMayJunJulAugSepOctNovDec12 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 Kara-Kulja

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 Kara-Kulja, 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 Kara-Kulja

Humidity Comfort Levels in Kara-KuljaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 120%Jan 120%Jul 40%Jul 40%NowNowdrydry
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 Kara-Kulja experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.6 months, from April 16 to October 2, with average wind speeds of more than 5.0 miles per hour. The windiest month of the year in Kara-Kulja is July, with an average hourly wind speed of 5.8 miles per hour.

The calmer time of year lasts for 6.4 months, from October 2 to April 16. The calmest month of the year in Kara-Kulja is November, with an average hourly wind speed of 4.2 miles per hour.

Average Wind Speed in Kara-Kulja

Average Wind Speed in Kara-KuljawindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mphJul 95.8 mphJul 95.8 mphNov 244.1 mphNov 244.1 mphApr 165.0 mphApr 165.0 mphOct 25.0 mphOct 25.0 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) 4.34.34.64.95.25.55.85.65.44.64.24.3

The predominant average hourly wind direction in Kara-Kulja varies throughout the year.

The wind is most often from the west for 6.8 months, from March 17 to October 12, with a peak percentage of 55% on July 21. The wind is most often from the east for 5.2 months, from October 12 to March 17, with a peak percentage of 54% on January 1.

Wind Direction in Kara-Kulja

Wind Direction in Kara-KuljaEWEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastsouthnorth
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 Kara-Kulja 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 Kara-Kulja for general outdoor tourist activities is from late June to late August, with a peak score in the third week of July.

Tourism Score in Kara-Kulja

Tourism Score in Kara-Kuljabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.48.40.00.0NowNowtemperaturetemperature 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 Kara-Kulja for hot-weather activities is from late June to mid August, with a peak score in the third week of July.

Beach/Pool Score in Kara-Kulja

Beach/Pool Score in Kara-Kuljabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.05.00.00.0NowNowtemperaturetemperature 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 Kara-Kulja typically lasts for 6.4 months (197 days), from around April 4 to around October 17, rarely starting before March 14 or after April 28, and rarely ending before September 30 or after November 6.

Time Spent in Various Temperature Bands and the Growing Season in Kara-Kulja

Time Spent in Various Temperature Bands and the Growing Season in Kara-Kuljagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 450%Apr 450%Oct 1750%Oct 1790%Apr 2890%Apr 2890%Sep 3090%Sep 3010%Mar 1410%Mar 1410%Nov 610%Nov 60%Jan 260%Jan 26Jul 19100%Jul 19100%NowNowfreezingvery coldcoldcoolcomfortablewarmfrigidhot
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 Kara-Kulja should appear around April 22, only rarely appearing before April 14 or after May 5.

Growing Degree Days in Kara-Kulja

Growing Degree Days in Kara-KuljaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FApr 2290°FApr 2290°FJun 30900°FJun 30900°FAug 161,800°FAug 161,800°FDec 312,491°FDec 312,491°FNowNow
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 3.2 months, from May 23 to August 29, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest month of the year in Kara-Kulja is July, with an average of 8.0 kWh.

The darker period of the year lasts for 3.6 months, from October 31 to February 18, with an average daily incident shortwave energy per square meter below 3.2 kWh. The darkest month of the year in Kara-Kulja is December, with an average of 2.1 kWh.

Average Daily Incident Shortwave Solar Energy in Kara-Kulja

Average Daily Incident Shortwave Solar Energy in Kara-KuljabrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJul 88.1 kWhJul 88.1 kWhDec 142.0 kWhDec 142.0 kWhMay 236.9 kWhMay 236.9 kWhAug 296.9 kWhAug 296.9 kWhOct 313.2 kWhOct 313.2 kWhFeb 183.2 kWhFeb 183.2 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) 2.33.14.25.66.67.78.07.35.94.02.62.1

For the purposes of this report, the geographical coordinates of Kara-Kulja are 40.632 deg latitude, 73.592 deg longitude, and 4,541 ft elevation.

The topography within 2 miles of Kara-Kulja contains very significant variations in elevation, with a maximum elevation change of 1,490 feet and an average elevation above sea level of 4,740 feet. Within 10 miles contains very significant variations in elevation (5,715 feet). Within 50 miles also contains extreme variations in elevation (14,206 feet).

The area within 2 miles of Kara-Kulja is covered by sparse vegetation (28%), cropland (26%), grassland (18%), and bare soil (13%), within 10 miles by cropland (38%) and grassland (35%), and within 50 miles by grassland (36%) and cropland (20%).

This report illustrates the typical weather in Kara-Kulja, 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 is only a single weather station, Osh Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Kara-Kulja.

At a distance of 68 kilometers from Kara-Kulja, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Kara-Kulja according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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.