1. WeatherSpark.com
  2. Iran
  3. East Azerbaijan

Climate and Average Weather Year Round in Ahar Iran

In Ahar, the summers are warm, dry, and clear and the winters are very cold, snowy, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 21°F to 88°F and is rarely below 11°F or above 96°F.

Based on the beach/pool score, the best time of year to visit Ahar for hot-weather activities is from early July to late August.

Climate in Ahar

very coldcoldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow98%98%55%55%clearovercastprecipitation: 1.1 inprecipitation: 1.1 in0.2 in0.2 inmuggy: 0%muggy: 0%0%0%drydrybeach/pool score: 8.1beach/pool score: 8.10.00.0
Ahar weather by month. Click on each chart for more information.

The hot season lasts for 3.6 months, from May 31 to September 19, with an average daily high temperature above 78°F. The hottest month of the year in Ahar is July, with an average high of 87°F and low of 64°F.

The cold season lasts for 3.5 months, from November 24 to March 8, with an average daily high temperature below 47°F. The coldest month of the year in Ahar is January, with an average low of 22°F and high of 38°F.

Average High and Low Temperature in Ahar

Average High and Low Temperature in AharhotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2337°FJan 2337°FJul 2988°FJul 2988°F21°F21°F65°F65°FMay 3178°FMay 3178°FSep 1978°FSep 1978°FNov 2447°FNov 2447°FMar 847°FMar 847°F55°F55°F55°F55°F30°F30°F29°F29°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 38°F42°F50°F62°F72°F81°F87°F86°F79°F66°F51°F41°F
Temp. 29°F32°F41°F52°F61°F70°F75°F75°F67°F55°F42°F32°F
Low 22°F24°F32°F41°F50°F59°F64°F64°F56°F45°F33°F25°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 Ahar

Average Hourly Temperature in AharJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingfreezingfreezingvery coldvery coldcoldcoldcoolcoolcomfortablewarmhotfreezing
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.

Columbus, Ohio, United States (6,172 miles away) and Bridgewater, New Jersey, United States (5,858 miles) are the far-away foreign places with temperatures most similar to Ahar (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Ahar to another city:

Map

In Ahar, 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 Ahar begins around May 26 and lasts for 4.3 months, ending around October 5.

The clearest month of the year in Ahar is July, 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 5 and lasts for 7.7 months, ending around May 26.

The cloudiest month of the year in Ahar is March, during which on average the sky is overcast or mostly cloudy 44% of the time.

Cloud Cover Categories in Ahar

Cloud Cover Categories in AharclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2598%Jul 2598%Mar 1955%Mar 1955%May 2676%May 2676%Oct 577%Oct 577%NowNowclearmostly clearpartly cloudyovercastmostly 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 41%41%44%43%31%9%2%3%10%32%42%41%
Clearer 59%59%56%57%69%91%98%97%90%68%58%59%

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

The wetter season lasts 8.3 months, from September 20 to May 30, with a greater than 11% chance of a given day being a wet day. The month with the most wet days in Ahar is April, with an average of 4.6 days with at least 0.04 inches of precipitation.

The drier season lasts 3.7 months, from May 30 to September 20. The month with the fewest wet days in Ahar is July, with an average of 1.3 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 Ahar changes throughout the year.

Rain alone is the most common for 9.8 months, from February 21 to December 15. The month with the most days of rain alone in Ahar is May, with an average of 4.6 days.

Snow alone is the most common for 2.2 months, from December 15 to February 21. The month with the most days of snow alone in Ahar is February, with an average of 1.2 days.

Daily Chance of Precipitation in Ahar

Daily Chance of Precipitation in AharsnowrainJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%May 518%May 518%Jul 84%Jul 84%Feb 2111%Feb 2111%Dec 158%Dec 158%Sep 2011%Sep 2011%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 0.9d1.2d2.6d4.4d4.6d2.3d1.3d1.4d2.7d3.8d3.1d1.1d
Mixed 0.7d0.6d0.7d0.1d0.0d0.0d0.0d0.0d0.0d0.2d0.6d0.6d
Snow 1.2d1.2d0.7d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.5d0.9d
Any 2.8d3.0d4.0d4.6d4.6d2.3d1.3d1.4d2.7d4.1d4.2d2.6d

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. Ahar experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.6 months, from March 15 to December 2, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Ahar is October, with an average rainfall of 0.9 inches.

The rainless period of the year lasts for 3.4 months, from December 2 to March 15. The month with the least rain in Ahar is January, with an average rainfall of 0.2 inches.

Average Monthly Rainfall in Ahar

Average Monthly Rainfall in AharrainJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 inApr 291.0 inApr 291.0 inJan 40.2 inJan 40.2 inNov 41.0 inNov 41.0 inAug 10.2 inAug 10.2 inMar 150.5 inMar 150.5 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 snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.2″0.3″0.5″0.9″0.8″0.4″0.2″0.3″0.7″0.9″0.8″0.3″

Snowfall

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

The snowy period of the year lasts for 5.1 months, from November 1 to April 3, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Ahar is February, with an average snowfall of 2.8 inches.

The snowless period of the year lasts for 6.9 months, from April 3 to November 1. The least snow falls around July 21, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Ahar

Average Monthly Snowfall in AharsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 inFeb 252.9 inFeb 252.9 inJul 210.0 inJul 210.0 inDec 22.6 inDec 22.6 inApr 31.0 inApr 31.0 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 2.4″2.8″2.1″0.4″0.0″0.0″0.0″0.0″0.0″0.3″2.0″2.3″

The length of the day in Ahar varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 29 minutes of daylight; the longest day is June 21, with 14 hours, 51 minutes of daylight.

Hours of Daylight and Twilight in Ahar

Hours of Daylight and Twilight in AharJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2014 hr, 51 minJun 2114 hr, 51 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 29 minDec 219 hr, 29 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 9.8h10.8h12.0h13.2h14.3h14.8h14.5h13.6h12.4h11.2h10.1h9.5h

The earliest sunrise is at 4:57 AM on June 13, and the latest sunrise is 2 hours, 42 minutes later at 7:39 AM on January 5. The earliest sunset is at 5:00 PM on December 6, and the latest sunset is 2 hours, 49 minutes later at 7:49 PM on June 27.

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

Sunrise & Sunset with Twilight in Ahar

Sunrise & Sunset with Twilight in AharJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 134:57 AMJun 134:57 AM7:49 PMJun 277:49 PMJun 27Dec 65:00 PMDec 65:00 PM7:39 AMJan 57:39 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 Ahar

Solar Elevation and Azimuth in AharJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0000101010102020202030303030404040505050606070000010101010202020203030304040505060702875NowNow
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 Ahar

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 Ahar, 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 Ahar

Humidity Comfort Levels in AharJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 30%Feb 30%Aug 220%Aug 220%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 Ahar experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.6 months, from November 13 to April 30, with average wind speeds of more than 8.2 miles per hour. The windiest month of the year in Ahar is February, with an average hourly wind speed of 9.7 miles per hour.

The calmer time of year lasts for 6.4 months, from April 30 to November 13. The calmest month of the year in Ahar is September, with an average hourly wind speed of 6.6 miles per hour.

Average Wind Speed in Ahar

Average Wind Speed in AharwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mphFeb 710.0 mphFeb 710.0 mphSep 126.5 mphSep 126.5 mphNov 138.2 mphNov 138.2 mphApr 308.2 mphApr 308.2 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) 9.69.79.28.87.37.07.57.16.67.28.29.1

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

The wind is most often from the east for 4.4 months, from May 30 to October 12, with a peak percentage of 57% on July 25. The wind is most often from the west for 7.6 months, from October 12 to May 30, with a peak percentage of 49% on January 1.

Wind Direction in Ahar

Wind Direction in AharWEWJanFebMarAprMayJunJulAugSepOctNovDec0%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 Ahar 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 Ahar for general outdoor tourist activities is from late May to late September, with a peak score in the third week of June.

Tourism Score in Ahar

Tourism Score in Aharbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.68.60.00.08.58.5NowNowtemperaturetemperature 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 Ahar for hot-weather activities is from early July to late August, with a peak score in the last week of July.

Beach/Pool Score in Ahar

Beach/Pool Score in Aharbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.18.10.00.0NowNowtemperaturetemperature 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 Ahar typically lasts for 7.1 months (219 days), from around April 3 to around November 8, rarely starting before March 15 or after April 26, and rarely ending before October 21 or after November 24.

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

Time Spent in Various Temperature Bands and the Growing Season in Ahargrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 350%Apr 350%Nov 850%Nov 890%Apr 2690%Apr 2690%Oct 2190%Oct 2110%Mar 1510%Mar 1510%Nov 2410%Nov 240%Jan 310%Jan 31Jul 23100%Jul 23100%freezingvery 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 Ahar should appear around April 14, only rarely appearing before March 30 or after April 28.

Growing Degree Days in Ahar

Growing Degree Days in AharJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°FApr 1489°FApr 1489°FJun 19900°FJun 19900°FJul 281,800°FJul 281,800°FDec 313,377°FDec 313,377°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 14 to August 22, with an average daily incident shortwave energy per square meter above 7.0 kWh. The brightest month of the year in Ahar is June, 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 3.6 kWh. The darkest month of the year in Ahar is December, with an average of 2.5 kWh.

Average Daily Incident Shortwave Solar Energy in Ahar

Average Daily Incident Shortwave Solar Energy in AharbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJun 168.1 kWhJun 168.1 kWhDec 212.5 kWhDec 212.5 kWhAug 227.0 kWhAug 227.0 kWhOct 293.6 kWhOct 293.6 kWhFeb 133.6 kWhFeb 133.6 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) 2.83.74.86.07.18.07.97.26.04.33.02.5

For the purposes of this report, the geographical coordinates of Ahar are 38.477 deg latitude, 47.070 deg longitude, and 4,383 ft elevation.

The topography within 2 miles of Ahar contains only modest variations in elevation, with a maximum elevation change of 417 feet and an average elevation above sea level of 4,439 feet. Within 10 miles contains only modest variations in elevation (5,469 feet). Within 50 miles also contains extreme variations in elevation (14,997 feet).

The area within 2 miles of Ahar is covered by cropland (37%), shrubs (34%), sparse vegetation (18%), and grassland (11%), within 10 miles by shrubs (61%) and cropland (18%), and within 50 miles by shrubs (66%).

This report illustrates the typical weather in Ahar, 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 Ahar.

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