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Climate and Average Weather Year Round in Santiago de Compostela Spain

In Santiago de Compostela, the summers are comfortable and mostly clear and the winters are cold, wet, and partly cloudy. Over the course of the year, the temperature typically varies from 41°F to 76°F and is rarely below 32°F or above 87°F.

Based on the tourism score, the best time of year to visit Santiago de Compostela for warm-weather activities is from late June to early September.

Climate in Santiago de Compostela

coldcoolcomfortablewarmcomfortablecoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow79%79%37%37%clearovercastprecipitation: 5.6 inprecipitation: 5.6 in0.9 in0.9 inmuggy: 5%muggy: 5%0%0%drydrytourism score: 7.9tourism score: 7.90.90.9
Santiago de Compostela weather by month. Click on each chart for more information.

The warm season lasts for 3.0 months, from June 20 to September 19, with an average daily high temperature above 71°F. The hottest month of the year in Santiago de Compostela is August, with an average high of 76°F and low of 57°F.

The cool season lasts for 3.7 months, from November 16 to March 6, with an average daily high temperature below 57°F. The coldest month of the year in Santiago de Compostela is January, with an average low of 41°F and high of 53°F.

Average High and Low Temperature in Santiago de Compostela

Average High and Low Temperature in Santiago de CompostelawarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 754°FFeb 754°FJul 2976°FJul 2976°F41°F41°F58°F58°FJun 2071°FJun 2071°FSep 1971°FSep 1971°FNov 1657°FNov 1657°FMar 657°FMar 657°F54°F54°F55°F55°F45°F45°F42°F42°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 53°F55°F58°F61°F65°F71°F75°F76°F72°F65°F58°F54°F
Temp. 47°F47°F50°F52°F56°F62°F65°F66°F63°F58°F51°F48°F
Low 41°F41°F43°F45°F49°F54°F57°F57°F55°F51°F46°F43°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 Santiago de Compostela

Average Hourly Temperature in Santiago de CompostelaJanFebMarAprMayJunJulAugSepOctNovDec12 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 coldcoldcoldcoolcomfortablevery 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.

Warragul, Australia (11,075 miles away) and Murupara, New Zealand (12,040 miles) are the far-away foreign places with temperatures most similar to Santiago de Compostela (view comparison).

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In Santiago de Compostela, 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 Santiago de Compostela begins around June 5 and lasts for 3.4 months, ending around September 17.

The clearest month of the year in Santiago de Compostela is July, during which on average the sky is clear, mostly clear, or partly cloudy 77% of the time.

The cloudier part of the year begins around September 17 and lasts for 8.6 months, ending around June 5.

The cloudiest month of the year in Santiago de Compostela is January, during which on average the sky is overcast or mostly cloudy 62% of the time.

Cloud Cover Categories in Santiago de Compostela

Cloud Cover Categories in Santiago de CompostelaclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2079%Jul 2079%Dec 3137%Dec 3137%Jun 558%Jun 558%Sep 1758%Sep 1758%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 62%58%55%53%47%37%23%28%41%53%60%62%
Clearer 38%42%45%47%53%63%77%72%59%47%40%38%

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

The wetter season lasts 8.0 months, from September 27 to May 26, with a greater than 27% chance of a given day being a wet day. The month with the most wet days in Santiago de Compostela is November, with an average of 12.6 days with at least 0.04 inches of precipitation.

The drier season lasts 4.0 months, from May 26 to September 27. The month with the fewest wet days in Santiago de Compostela is July, with an average of 3.6 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 Santiago de Compostela is November, with an average of 12.6 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 44% on January 8.

Daily Chance of Precipitation in Santiago de Compostela

Daily Chance of Precipitation in Santiago de CompostelawetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 844%Jan 844%Jul 2310%Jul 2310%Sep 2727%Sep 2727%May 2627%May 2627%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 12.5d9.8d9.7d11.0d9.2d5.7d3.6d4.0d6.4d11.7d12.6d12.4d

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. Santiago de Compostela experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Santiago de Compostela. The month with the most rain in Santiago de Compostela is December, with an average rainfall of 5.5 inches.

The month with the least rain in Santiago de Compostela is July, with an average rainfall of 0.9 inches.

Average Monthly Rainfall in Santiago de Compostela

Average Monthly Rainfall in Santiago de CompostelaJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inDec 295.6 inDec 295.6 inJul 220.9 inJul 220.9 inNov 75.5 inNov 75.5 inApr 23.7 inApr 23.7 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 4.9″3.8″3.4″3.6″2.8″1.6″0.9″1.2″2.6″5.2″5.4″5.5″

The length of the day in Santiago de Compostela varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 1 minute of daylight; the longest day is June 20, with 15 hours, 21 minutes of daylight.

Hours of Daylight and Twilight in Santiago de Compostela

Hours of Daylight and Twilight in Santiago de CompostelaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 21 minJun 2015 hr, 21 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 1 minDec 219 hr, 1 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 9.4h10.6h12.0h13.4h14.7h15.3h15.0h13.9h12.5h11.0h9.7h9.1h

The earliest sunrise is at 6:54 AM on June 15, and the latest sunrise is 2 hours, 10 minutes later at 9:05 AM on January 4. The earliest sunset is at 5:59 PM on December 8, and the latest sunset is 4 hours, 17 minutes later at 10:17 PM on June 26.

Daylight saving time (DST) is observed in Santiago de Compostela 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 Santiago de Compostela

Sunrise & Sunset with Twilight and Daylight Saving Time in Santiago de CompostelaJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMJun 156:54 AMJun 156:54 AM10:17 PMJun 2610:17 PMJun 26Dec 85:59 PMDec 85:59 PM9:05 AMJan 49:05 AMJan 4Mar 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 Santiago de Compostela

Solar Elevation and Azimuth in Santiago de CompostelaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0000101010202020303030404050606000010101010202020303040405050602471NowNow
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 Santiago de Compostela

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 Santiago de Compostela, 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 3% of 3% throughout.

Humidity Comfort Levels in Santiago de Compostela

Humidity Comfort Levels in Santiago de CompostelaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 40%Mar 40%Aug 115%Aug 115%NowNowhumidhumidcomfortablecomfortabledrydry
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 0.0d0.0d0.0d0.0d0.0d0.3d1.0d1.3d0.5d0.1d0.0d0.0d

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 Santiago de Compostela experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.4 months, from October 25 to May 7, with average wind speeds of more than 5.8 miles per hour. The windiest month of the year in Santiago de Compostela is January, with an average hourly wind speed of 6.2 miles per hour.

The calmer time of year lasts for 5.6 months, from May 7 to October 25. The calmest month of the year in Santiago de Compostela is September, with an average hourly wind speed of 5.2 miles per hour.

Average Wind Speed in Santiago de Compostela

Average Wind Speed in Santiago de CompostelawindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mphDec 266.4 mphDec 266.4 mphSep 125.1 mphSep 125.1 mphOct 255.8 mphOct 255.8 mphMay 75.8 mphMay 75.8 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) 6.26.16.16.05.65.45.35.25.25.75.96.2

The predominant average hourly wind direction in Santiago de Compostela varies throughout the year.

The wind is most often from the north for 6.3 months, from March 24 to October 1, with a peak percentage of 54% on July 23. The wind is most often from the south for 5.7 months, from October 1 to March 24, with a peak percentage of 43% on January 1.

Wind Direction in Santiago de Compostela

Wind Direction in Santiago de CompostelaSNSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
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).

Santiago de Compostela 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 some seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.6 months, from July 8 to September 27, with an average temperature above 62°F. The month of the year in Santiago de Compostela with the warmest water is August, with an average temperature of 64°F.

The time of year with cooler water lasts for 4.0 months, from December 29 to April 30, with an average temperature below 57°F. The month of the year in Santiago de Compostela with the coolest water is March, with an average temperature of 55°F.

Average Water Temperature in Santiago de Compostela

Average Water Temperature in Santiago de CompostelawarmcoolJanFebMarAprMayJunJulAugSepOctNovDec52°F52°F54°F54°F56°F56°F58°F58°F60°F60°F62°F62°F64°F64°F66°F66°FAug 1464°FAug 1464°F55°FFeb 2655°FFeb 26Jul 862°FJul 862°FSep 2762°FSep 2762°FDec 2957°FDec 2957°FApr 3057°FApr 3057°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 56°F55°F55°F56°F58°F61°F63°F64°F63°F61°F59°F57°F

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

Tourism Score in Santiago de Compostela

Tourism Score in Santiago de Compostelabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.97.90.90.9NowNowtemperaturetemperature 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 Santiago de Compostela for hot-weather activities is from mid July to late August, with a peak score in the last week of July.

Beach/Pool Score in Santiago de Compostela

Beach/Pool Score in Santiago de CompostelaJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.64.60.00.0NowNowtemperaturetemperature 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 Santiago de Compostela typically lasts for 9.7 months (296 days), from around February 22 to around December 14, rarely starting after April 2, or ending before November 15.

Time Spent in Various Temperature Bands and the Growing Season in Santiago de Compostela

Time Spent in Various Temperature Bands and the Growing Season in Santiago de Compostelagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Feb 2250%Feb 2250%Dec 1450%Dec 1490%Apr 290%Apr 290%Nov 1590%Nov 1515%Jan 1615%Jan 16Jul 22100%Jul 22100%NowNowvery coldcoldcoolcomfortablewarm
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 Santiago de Compostela should appear around March 5, only rarely appearing before February 17 or after March 29.

Growing Degree Days in Santiago de Compostela

Growing Degree Days in Santiago de CompostelaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FMar 590°FMar 590°FJul 3900°FJul 3900°FAug 301,800°FAug 301,800°FDec 312,596°FDec 312,596°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 3.1 months, from May 16 to August 21, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest month of the year in Santiago de Compostela is July, with an average of 7.4 kWh.

The darker period of the year lasts for 3.8 months, from October 25 to February 17, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest month of the year in Santiago de Compostela is December, with an average of 1.4 kWh.

Average Daily Incident Shortwave Solar Energy in Santiago de Compostela

Average Daily Incident Shortwave Solar Energy in Santiago de CompostelabrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 67.5 kWhJul 67.5 kWhDec 261.4 kWhDec 261.4 kWhMay 166.3 kWhMay 166.3 kWhAug 216.3 kWhAug 216.3 kWhOct 252.6 kWhOct 252.6 kWhFeb 172.6 kWhFeb 172.6 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) 1.72.63.95.16.37.27.46.54.83.11.91.4

For the purposes of this report, the geographical coordinates of Santiago de Compostela are 42.881 deg latitude, -8.546 deg longitude, and 843 ft elevation.

The topography within 2 miles of Santiago de Compostela contains very significant variations in elevation, with a maximum elevation change of 1,027 feet and an average elevation above sea level of 860 feet. Within 10 miles also contains very significant variations in elevation (1,713 feet). Within 50 miles contains very significant variations in elevation (3,894 feet).

The area within 2 miles of Santiago de Compostela is covered by trees (39%), artificial surfaces (30%), and cropland (25%), within 10 miles by trees (57%) and cropland (39%), and within 50 miles by trees (33%) and water (30%).

This report illustrates the typical weather in Santiago de Compostela, 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 Santiago de Compostela.

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