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    Average Weather at Faro Airport Portugal

    At Faro Airport, the summers are short, warm, arid, and mostly clear and the winters are long, cool, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 47°F to 84°F and is rarely below 40°F or above 92°F.

    The warm season lasts for 2.8 months, from June 20 to September 14, with an average daily high temperature above 79°F. The hottest day of the year is July 23, with an average high of 84°F and low of 68°F.

    The cool season lasts for 3.8 months, from November 22 to March 17, with an average daily high temperature below 66°F. The coldest day of the year is January 23, with an average low of 47°F and high of 61°F.

    Average High and Low Temperature

    Average High and Low Temperature at Faro Airportwarmcoolcool40°F45°F50°F55°F60°F65°F70°F75°F80°F85°F90°F95°FJanFebMarAprMayJunJulAugSepOctNovDecJan 2361°FJan 2361°FJul 2384°FJul 2384°F47°F47°F68°F68°FJun 2079°FJun 2079°FSep 1479°FSep 1479°FNov 2266°FNov 2266°FMar 1766°FMar 1766°F65°F65°F65°F65°F52°F52°F51°F51°F
    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.

    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

    Average Hourly Temperature at Faro Airport12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDeccoldcoolcomfortablewarm
    The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

    Clouds

    At Faro Airport, 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 at Faro Airport begins around June 4 and lasts for 3.2 months, ending around September 10. On July 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 94% of the time, and overcast or mostly cloudy 6% of the time.

    The cloudier part of the year begins around September 10 and lasts for 8.8 months, ending around June 4. On October 30, the cloudiest day of the year, the sky is overcast or mostly cloudy 45% of the time, and clear, mostly clear, or partly cloudy 55% of the time.

    Cloud Cover

    Cloud Cover at Faro Airportclearercloudiercloudier0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecOct 3045%Oct 3045%Jul 216%Jul 216%Jun 426%Jun 426%Sep 1026%Sep 1026%overcastmostly cloudypartly cloudymostly clearclear
    The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

    Precipitation

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

    The wetter season lasts 7.1 months, from October 3 to May 7, with a greater than 13% chance of a given day being a wet day. The chance of a wet day peaks at 25% on December 14.

    The drier season lasts 4.9 months, from May 7 to October 3. The smallest chance of a wet day is 0% on July 25.

    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 throughout the year is rain alone, with a peak probability of 25% on December 14.

    Daily Chance of Precipitation

    Daily Chance of Precipitation at Faro Airportwetwetdry0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecDec 1425%Dec 1425%Jul 250%Jul 250%Oct 313%Oct 313%May 713%May 713%rain
    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).

    Rainfall

    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. Faro Airport experiences significant seasonal variation in monthly rainfall.

    The rainy period of the year lasts for 8.5 months, from September 10 to May 27, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around November 8, with an average total accumulation of 3.2 inches.

    The rainless period of the year lasts for 3.4 months, from May 27 to September 10. The least rain falls around July 25, with an average total accumulation of 0.0 inches.

    Average Monthly Rainfall

    Average Monthly Rainfall at Faro Airportrainrain0 in2 in4 in6 in8 inJanFebMarAprMayJunJulAugSepOctNovDecNov 83.2 inNov 83.2 inJul 250.0 inJul 250.0 inFeb 201.8 inFeb 201.8 inApr 161.4 inApr 161.4 inSep 100.5 inSep 100.5 inMay 270.5 inMay 270.5 in
    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 liquid-equivalent snowfall.

    Sun

    The length of the day at Faro Airport varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 37 minutes of daylight; the longest day is June 21, with 14 hours, 42 minutes of daylight.

    Hours of Daylight and Twilight

    Hours of Daylight and Twilight at Faro Airport0 hr4 hr8 hr12 hr16 hr20 hr24 hrJanFebMarAprMayJunJulAugSepOctNovDec12 hr, 6 minMar 2012 hr, 6 minMar 2014 hr, 42 minJun 2114 hr, 42 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 37 minDec 219 hr, 37 minDec 21nightnightday
    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.

    The earliest sunrise is at 6:11 AM on June 13, and the latest sunrise is 1 hour, 40 minutes later at 7:52 AM on October 28. The earliest sunset is at 5:14 PM on December 6, and the latest sunset is 3 hours, 41 minutes later at 8:55 PM on June 28.

    Daylight saving time (DST) is observed at Faro Airport during 2017, starting in the spring on March 26, lasting 7.1 months, and ending in the fall on October 29.

    Sunrise & Sunset with Twilight and Daylight Saving Time

    Sunrise & Sunset with Twilight and Daylight Saving Time at Faro Airport2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDecJun 136:11 AMJun 136:11 AM8:55 PMJun 288:55 PMJun 28Dec 65:14 PMDec 65:14 PM7:52 AMOct 287:52 AMOct 28Mar 26DSTMar 26DSTDSTOct 29DSTOct 29daynightnightnightnight
    The solar day over the course of the year 2017. 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.

    Humidity

    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.

    Faro Airport experiences some seasonal variation in the perceived humidity.

    The muggier period of the year lasts for 4.6 months, from June 14 to November 3, during which time the comfort level is muggy, oppressive, or miserable at least 7% of the time. The muggiest day of the year is September 6, with muggy conditions 28% of the time.

    The least muggy day of the year is February 20, when muggy conditions are essentially unheard of.

    Humidity Comfort Levels

    Humidity Comfort Levels at Faro Airportmuggy0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecFeb 200%Feb 200%Sep 628%Sep 628%Jun 147%Jun 147%Nov 37%Nov 37%oppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydry
    The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

    Wind

    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 at Faro Airport experiences mild seasonal variation over the course of the year.

    The windier part of the year lasts for 6.4 months, from October 22 to May 2, with average wind speeds of more than 6.1 miles per hour. The windiest day of the year is December 16, with an average hourly wind speed of 7.1 miles per hour.

    The calmer time of year lasts for 5.6 months, from May 2 to October 22. The calmest day of the year is September 14, with an average hourly wind speed of 5.3 miles per hour.

    Average Wind Speed

    Average Wind Speed at Faro Airportwindywindy0 mph1 mph2 mph3 mph4 mph5 mph6 mph7 mph8 mph9 mph10 mph11 mphJanFebMarAprMayJunJulAugSepOctNovDecDec 167.1 mphDec 167.1 mphSep 145.3 mphSep 145.3 mphOct 226.1 mphOct 226.1 mphMay 26.2 mphMay 26.2 mph
    The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

    The predominant average hourly wind direction at Faro Airport varies throughout the year.

    The wind is most often from the east for 3.1 weeks, from December 8 to December 30, with a peak percentage of 35% on December 17. The wind is most often from the north for 11 months, from December 30 to December 8, with a peak percentage of 33% on January 1.

    Wind Direction

    Wind Direction at Faro AirportNE0%20%40%60%80%100%JanFebMarAprMayJunJulAugSepOctNovDecwestsoutheastnorth
    The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

    Water Temperature

    Faro Airport 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 3.5 months, from July 1 to October 16, with an average temperature above 68°F. The day of the year with the warmest water is August 13, with an average temperature of 70°F.

    The time of year with cooler water lasts for 3.9 months, from December 29 to April 27, with an average temperature below 62°F. The day of the year with the coolest water is February 19, with an average temperature of 60°F.

    Average Water Temperature

    Average Water Temperature at Faro Airportwarmcool56°F58°F60°F62°F64°F66°F68°F70°F72°F74°FJanFebMarAprMayJunJulAugSepOctNovDecAug 1370°FAug 1370°F60°FFeb 1960°FFeb 19Jul 168°FJul 168°FOct 1668°FOct 1668°FDec 2962°FDec 2962°FApr 2762°FApr 2762°F
    The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

    Solar Energy

    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 3.5 months, from May 7 to August 21, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is July 2, with an average of 8.3 kWh.

    The darker period of the year lasts for 3.4 months, from October 27 to February 11, with an average daily incident shortwave energy per square meter below 3.6 kWh. The darkest day of the year is December 16, with an average of 2.3 kWh.

    Average Daily Incident Shortwave Solar Energy

    Average Daily Incident Shortwave Solar Energy at Faro Airportbrightdarkdark0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJanFebMarAprMayJunJulAugSepOctNovDecJul 28.3 kWhJul 28.3 kWhDec 162.3 kWhDec 162.3 kWhMay 77.1 kWhMay 77.1 kWhAug 217.1 kWhAug 217.1 kWhOct 273.6 kWhOct 273.6 kWhFeb 113.5 kWhFeb 113.5 kWh
    The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

    Topography

    For the purposes of this report, the geographical coordinates of Faro Airport are 37.014 deg latitude, -7.966 deg longitude, and 7 ft elevation.

    The topography within 2 miles of Faro Airport contains only modest variations in elevation, with a maximum elevation change of 151 feet and an average elevation above sea level of 16 feet. Within 10 miles contains only modest variations in elevation (1,365 feet). Within 50 miles contains very significant variations in elevation (3,012 feet).

    The area within 2 miles of Faro Airport is covered by artificial surfaces (24%), water (21%), herbaceous vegetation (17%), and cropland (14%), within 10 miles by water (51%) and cropland (27%), and within 50 miles by water (58%) and cropland (17%).

    Data Sources

    This report illustrates the typical weather at Faro Airport, 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

    Faro Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

    In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

    The stations on which we may fall back are Beja, Naval Station Rota, Jerez Airport, and Seville San Pablo Airport.

    Other Data

    All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .

    Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.