1. WeatherSpark.com
  2. Italy
  3. Umbria

Climate and Average Weather Year Round in Attigliano Italy

In Attigliano, the summers are short, hot, dry, and mostly clear and the winters are long, cold, and partly cloudy. Over the course of the year, the temperature typically varies from 36°F to 90°F and is rarely below 27°F or above 98°F.

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

Climate in Attigliano

coldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow86%86%48%48%clearovercastprecipitation: 3.4 inprecipitation: 3.4 in0.8 in0.8 inmuggy: 10%muggy: 10%0%0%drydrybeach/pool score: 8.2beach/pool score: 8.20.00.0
Attigliano weather by month. Click on each chart for more information.

The hot season lasts for 2.7 months, from June 15 to September 7, with an average daily high temperature above 82°F. The hottest month of the year in Attigliano is August, with an average high of 88°F and low of 63°F.

The cool season lasts for 4.0 months, from November 16 to March 15, with an average daily high temperature below 59°F. The coldest month of the year in Attigliano is January, with an average low of 36°F and high of 51°F.

Average High and Low Temperature in Attigliano

Average High and Low Temperature in AttiglianohotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1351°FJan 1351°FAug 390°FAug 390°F36°F36°F64°F64°FJun 1582°FJun 1582°FSep 782°FSep 782°FNov 1659°FNov 1659°FMar 1559°FMar 1559°F58°F58°F59°F59°F44°F44°F40°F40°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 51°F53°F59°F65°F73°F82°F89°F88°F79°F70°F59°F52°F
Temp. 43°F44°F49°F54°F62°F70°F76°F76°F68°F60°F51°F45°F
Low 36°F37°F40°F45°F51°F58°F63°F63°F58°F52°F44°F38°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 Attigliano

Average Hourly Temperature in AttiglianoJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowvery coldvery coldvery coldcoldcoldcoolcoolcomfortablewarmhotvery cold
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.

Mountain Ranch, California, United States (6,128 miles away) is the far-away foreign place with temperatures most similar to Attigliano (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Attigliano to another city:

Map

In Attigliano, 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 Attigliano begins around June 9 and lasts for 3.2 months, ending around September 14.

The clearest month of the year in Attigliano is July, during which on average the sky is clear, mostly clear, or partly cloudy 85% of the time.

The cloudier part of the year begins around September 14 and lasts for 8.8 months, ending around June 9.

The cloudiest month of the year in Attigliano is January, during which on average the sky is overcast or mostly cloudy 50% of the time.

Cloud Cover Categories in Attigliano

Cloud Cover Categories in AttiglianoclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2386%Jul 2386%Jan 1648%Jan 1648%Jun 967%Jun 967%Sep 1467%Sep 1467%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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 50%47%47%47%42%28%15%20%33%44%49%50%
Clearer 50%53%53%53%58%72%85%80%67%56%51%50%

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

The wetter season lasts 8.8 months, from September 4 to May 29, with a greater than 20% chance of a given day being a wet day. The month with the most wet days in Attigliano is November, with an average of 8.8 days with at least 0.04 inches of precipitation.

The drier season lasts 3.2 months, from May 29 to September 4. The month with the fewest wet days in Attigliano is July, with an average of 3.4 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. The month with the most days of rain alone in Attigliano is November, with an average of 8.8 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 31% on November 15.

Daily Chance of Precipitation in Attigliano

Daily Chance of Precipitation in AttiglianowetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 1531%Nov 1531%Aug 39%Aug 39%Sep 420%Sep 420%May 2920%May 2920%NowNowrain
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 6.0d6.5d6.6d7.4d6.9d5.1d3.4d4.0d6.9d8.2d8.8d7.3d
Mixed 0.1d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d
Any 6.2d6.6d6.6d7.4d6.9d5.1d3.4d4.0d6.9d8.2d8.8d7.4d

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. Attigliano experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Attigliano. The month with the most rain in Attigliano is November, with an average rainfall of 3.4 inches.

The month with the least rain in Attigliano is July, with an average rainfall of 0.8 inches.

Average Monthly Rainfall in Attigliano

Average Monthly Rainfall in AttiglianoJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 inNov 143.4 inNov 143.4 inJul 220.8 inJul 220.8 inFeb 182.1 inFeb 182.1 inApr 171.9 inApr 171.9 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 1.7″2.1″1.8″1.9″1.7″1.3″0.8″1.1″2.4″3.0″3.4″2.3″

The length of the day in Attigliano varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 4 minutes of daylight; the longest day is June 20, with 15 hours, 18 minutes of daylight.

Hours of Daylight and Twilight in Attigliano

Hours of Daylight and Twilight in AttiglianoJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 18 minJun 2015 hr, 18 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 4 minDec 219 hr, 4 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 9.5h10.6h12.0h13.4h14.6h15.3h14.9h13.8h12.5h11.0h9.8h9.1h

The earliest sunrise is at 5:32 AM on June 14, and the latest sunrise is 2 hours, 8 minutes later at 7:40 AM on January 3. The earliest sunset is at 4:37 PM on December 8, and the latest sunset is 4 hours, 15 minutes later at 8:52 PM on June 26.

Daylight saving time (DST) is observed in Attigliano during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

Sunrise & Sunset with Twilight and Daylight Saving Time in Attigliano

Sunrise & Sunset with Twilight and Daylight Saving Time in AttiglianoJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:32 AMJun 145:32 AM8:52 PMJun 268:52 PMJun 26Dec 84:37 PMDec 84:37 PM7:40 AMJan 37:40 AMJan 3Mar 31DSTMar 31DSTDSTOct 27DSTOct 27daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 transitions to and from daylight saving time are indicated by the 'DST' labels.

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 Attigliano

Solar Elevation and Azimuth in AttiglianoJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM000010101020202030303040405050606000010101010202020303040405050602471NowNow
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 Attigliano

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 Attigliano, 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 5% of 5% throughout.

Humidity Comfort Levels in Attigliano

Humidity Comfort Levels in AttiglianoJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 250%Feb 250%Aug 1510%Aug 1510%NowNowhumidhumidcomfortablecomfortabledrydrymuggymuggy
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 0.0d0.0d0.0d0.0d0.1d1.0d2.2d2.7d1.0d0.1d0.0d0.0d

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

The windier part of the year lasts for 6.1 months, from October 22 to April 25, with average wind speeds of more than 6.1 miles per hour. The windiest month of the year in Attigliano is February, with an average hourly wind speed of 6.7 miles per hour.

The calmer time of year lasts for 5.9 months, from April 25 to October 22. The calmest month of the year in Attigliano is August, with an average hourly wind speed of 5.4 miles per hour.

Average Wind Speed in Attigliano

Average Wind Speed in AttiglianowindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphFeb 246.8 mphFeb 246.8 mphAug 75.4 mphAug 75.4 mphOct 226.1 mphOct 226.1 mphApr 256.1 mphApr 256.1 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) 6.56.76.76.45.75.55.55.45.66.06.46.5

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

The wind is most often from the east for 1.1 months, from January 5 to February 9 and for 1.1 months, from November 23 to December 26, with a peak percentage of 35% on December 8. The wind is most often from the south for 4.8 months, from February 9 to July 3; for 3.0 months, from August 24 to November 23; and for 1.4 weeks, from December 26 to January 5, with a peak percentage of 40% on April 4. The wind is most often from the west for 1.7 months, from July 3 to August 24, with a peak percentage of 32% on August 2.

Wind Direction in Attigliano

Wind Direction in AttiglianoESWSEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
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).

Attigliano is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

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

The time of year with warmer water lasts for 2.8 months, from June 28 to September 20, with an average temperature above 73°F. The month of the year in Attigliano with the warmest water is August, with an average temperature of 77°F.

The time of year with cooler water lasts for 4.5 months, from December 14 to April 28, with an average temperature below 61°F. The month of the year in Attigliano with the coolest water is February, with an average temperature of 57°F.

Average Water Temperature in Attigliano

Average Water Temperature in AttiglianowarmcoolJanFebMarAprMayJunJulAugSepOctNovDec55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°FAug 977°FAug 977°F57°FFeb 2457°FFeb 24Jun 2873°FJun 2873°FSep 2073°FSep 2073°FDec 1461°FDec 1461°FApr 2861°FApr 2861°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 58°F57°F57°F59°F64°F71°F75°F77°F74°F70°F65°F61°F

To characterize how pleasant the weather is in Attigliano 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 Attigliano for general outdoor tourist activities are from mid May to early August and from mid August to early October, with a peak score in the second week of September.

Tourism Score in Attigliano

Tourism Score in Attiglianobest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.47.40.70.77.27.26.66.6NowNowtemperaturetemperature precipitationprecipitationtourism 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 Attigliano for hot-weather activities is from late June to late August, with a peak score in the last week of July.

Beach/Pool Score in Attigliano

Beach/Pool Score in Attiglianobest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.28.20.00.0NowNowtemperaturetemperature 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 Attigliano typically lasts for 8.7 months (266 days), from around March 13 to around December 4, rarely starting before February 20 or after April 10, and rarely ending before November 12 or after December 28.

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

Time Spent in Various Temperature Bands and the Growing Season in Attiglianogrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 1350%Mar 1350%Dec 450%Dec 490%Apr 1090%Apr 1090%Nov 1290%Nov 1210%Feb 2010%Feb 2010%Dec 2810%Dec 280%Jan 240%Jan 24Jul 29100%Jul 29100%NowNowvery 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 Attigliano should appear around March 15, only rarely appearing before February 27 or after April 2.

Growing Degree Days in Attigliano

Growing Degree Days in AttiglianoJanFebMarAprMayJunJulAugSepOctNovDec0°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°F4,000°F4,000°FMar 1586°FMar 1586°FJun 10900°FJun 10900°FJul 201,800°FJul 201,800°FDec 313,877°FDec 313,877°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 11 to August 17, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest month of the year in Attigliano is July, with an average of 7.5 kWh.

The darker period of the year lasts for 3.6 months, from October 27 to February 15, with an average daily incident shortwave energy per square meter below 2.9 kWh. The darkest month of the year in Attigliano is December, with an average of 1.7 kWh.

Average Daily Incident Shortwave Solar Energy in Attigliano

Average Daily Incident Shortwave Solar Energy in AttiglianobrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 77.7 kWhJul 77.7 kWhDec 151.7 kWhDec 151.7 kWhMay 116.5 kWhMay 116.5 kWhAug 176.5 kWhAug 176.5 kWhOct 272.9 kWhOct 272.9 kWhFeb 152.9 kWhFeb 152.9 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) 2.02.94.25.56.67.47.56.54.93.42.21.7

For the purposes of this report, the geographical coordinates of Attigliano are 42.515 deg latitude, 12.295 deg longitude, and 289 ft elevation.

The topography within 2 miles of Attigliano contains very significant variations in elevation, with a maximum elevation change of 830 feet and an average elevation above sea level of 348 feet. Within 10 miles contains very significant variations in elevation (3,369 feet). Within 50 miles also contains extreme variations in elevation (7,205 feet).

The area within 2 miles of Attigliano is covered by cropland (79%) and trees (16%), within 10 miles by cropland (65%) and trees (31%), and within 50 miles by cropland (48%) and trees (33%).

This report illustrates the typical weather in Attigliano, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Attigliano.

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

The stations contributing to this reconstruction are:

Sources mapLIRV, 74%13 mi, 699 ftLIRK, 5%35 mi, 5,863 ftLIRZ, 22%42 mi, 404 ft© OpenStreetMap contributors

To get a sense of how much these sources agree with each other, you can view a comparison of Attigliano 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.