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Climate and Average Weather Year Round in Spercheiáda Greece

In Spercheiáda, the summers are hot, dry, and clear and the winters are long, very cold, and partly cloudy. Over the course of the year, the temperature typically varies from 35°F to 91°F and is rarely below 26°F or above 98°F.

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

Climate in Spercheiáda

coldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow96%96%47%47%clearovercastprecipitation: 3.0 inprecipitation: 3.0 in0.4 in0.4 inmuggy: 3%muggy: 3%0%0%drydrybeach/pool score: 8.7beach/pool score: 8.70.00.0
Spercheiáda weather by month. Click on each chart for more information.

The hot season lasts for 3.1 months, from June 9 to September 11, with an average daily high temperature above 83°F. The hottest month of the year in Spercheiáda is July, with an average high of 91°F and low of 65°F.

The cool season lasts for 4.0 months, from November 22 to March 20, with an average daily high temperature below 58°F. The coldest month of the year in Spercheiáda is January, with an average low of 35°F and high of 50°F.

Average High and Low Temperature in Spercheiáda

Average High and Low Temperature in SpercheiádahotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2250°FJan 2250°FJul 2591°FJul 2591°F35°F35°F66°F66°FJun 983°FJun 983°FSep 1183°FSep 1183°FNov 2258°FNov 2258°FMar 2058°FMar 2058°F59°F59°F59°F59°F43°F43°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 50°F52°F58°F65°F75°F85°F91°F90°F82°F71°F60°F52°F
Temp. 42°F43°F48°F55°F64°F74°F79°F78°F70°F61°F51°F44°F
Low 35°F36°F40°F45°F53°F60°F65°F64°F58°F51°F44°F37°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 Spercheiáda

Average Hourly Temperature in SpercheiádaJanFebMarAprMayJunJulAugSepOctNovDec12 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.

Columbia, California, United States (6,620 miles away); Fort Payne, Alabama, United States (5,594 miles); and Shanyang, China (5,442 miles) are the far-away foreign places with temperatures most similar to Spercheiáda (view comparison).

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In Spercheiáda, 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 Spercheiáda begins around May 29 and lasts for 3.8 months, ending around September 22.

The clearest month of the year in Spercheiáda is July, during which on average the sky is clear, mostly clear, or partly cloudy 95% of the time.

The cloudier part of the year begins around September 22 and lasts for 8.2 months, ending around May 29.

The cloudiest month of the year in Spercheiáda is December, during which on average the sky is overcast or mostly cloudy 53% of the time.

Cloud Cover Categories in Spercheiáda

Cloud Cover Categories in SpercheiádaclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1996%Jul 1996%Dec 347%Dec 347%May 2971%May 2971%Sep 2271%Sep 2271%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%50%48%43%34%17%5%8%24%43%51%53%
Clearer 50%50%52%57%66%83%95%92%76%57%49%47%

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

The wetter season lasts 6.6 months, from October 2 to April 20, with a greater than 18% chance of a given day being a wet day. The month with the most wet days in Spercheiáda is December, with an average of 9.0 days with at least 0.04 inches of precipitation.

The drier season lasts 5.5 months, from April 20 to October 2. The month with the fewest wet days in Spercheiáda is July, with an average of 1.6 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 Spercheiáda is December, 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 30% on November 29.

Daily Chance of Precipitation in Spercheiáda

Daily Chance of Precipitation in SpercheiádawetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Dec 631%Dec 631%Jul 115%Jul 115%Oct 218%Oct 218%Apr 2018%Apr 2018%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 7.5d7.5d6.6d5.5d4.1d2.7d1.6d2.4d3.8d6.5d8.2d8.8d
Mixed 0.2d0.2d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.2d
Any 7.7d7.8d6.7d5.5d4.1d2.7d1.6d2.4d3.8d6.5d8.2d9.0d

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. Spercheiáda experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 10 months, from August 10 to June 18, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Spercheiáda is November, with an average rainfall of 3.0 inches.

The rainless period of the year lasts for 1.7 months, from June 18 to August 10. The month with the least rain in Spercheiáda is July, with an average rainfall of 0.4 inches.

Average Monthly Rainfall in Spercheiáda

Average Monthly Rainfall in SpercheiádarainrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inNov 233.0 inNov 233.0 inJul 90.4 inJul 90.4 inAug 100.5 inAug 100.5 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 2.1″2.0″1.7″1.3″0.9″0.5″0.4″0.5″1.1″2.4″3.0″2.6″

The length of the day in Spercheiáda varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 26 minutes of daylight; the longest day is June 20, with 14 hours, 54 minutes of daylight.

Hours of Daylight and Twilight in Spercheiáda

Hours of Daylight and Twilight in SpercheiádaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2014 hr, 54 minJun 2014 hr, 54 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 26 minDec 219 hr, 26 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 9.8h10.8h12.0h13.3h14.3h14.9h14.6h13.6h12.4h11.2h10.1h9.5h

The earliest sunrise is at 6:05 AM on June 13, and the latest sunrise is 1 hour, 47 minutes later at 7:52 AM on October 26. The earliest sunset is at 5:09 PM on December 6, and the latest sunset is 3 hours, 52 minutes later at 9:01 PM on June 27.

Daylight saving time (DST) is observed in Spercheiáda 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 Spercheiáda

Sunrise & Sunset with Twilight and Daylight Saving Time in SpercheiádaJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 136:05 AMJun 136:05 AM9:01 PMJun 279:01 PMJun 27Dec 65:09 PMDec 65:09 PM7:52 AMOct 267:52 AMOct 26Mar 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 Spercheiáda

Solar Elevation and Azimuth in SpercheiádaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM000010101020202030303030404050506060700001010101020202030304040505060702875NowNow
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 Spercheiáda

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 Spercheiáda, 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 2% of 2% throughout.

Humidity Comfort Levels in Spercheiáda

Humidity Comfort Levels in SpercheiádaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 270%Feb 270%Aug 73%Aug 73%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 0.0d0.0d0.0d0.0d0.0d0.3d0.7d0.8d0.2d0.0d0.0d0.0d

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

The windier part of the year lasts for 5.5 months, from November 10 to April 25, with average wind speeds of more than 6.6 miles per hour. The windiest month of the year in Spercheiáda is February, with an average hourly wind speed of 7.7 miles per hour.

The calmer time of year lasts for 6.5 months, from April 25 to November 10. The calmest month of the year in Spercheiáda is August, with an average hourly wind speed of 5.5 miles per hour.

Average Wind Speed in Spercheiáda

Average Wind Speed in SpercheiádawindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphFeb 237.8 mphFeb 237.8 mphSep 15.5 mphSep 15.5 mphNov 106.6 mphNov 106.6 mphApr 256.6 mphApr 256.6 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) 7.47.77.36.86.26.05.75.55.66.26.77.2

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

The wind is most often from the east for 1.9 months, from July 8 to September 6 and for 1.2 months, from October 5 to November 11, with a peak percentage of 38% on August 10. The wind is most often from the west for 4.1 weeks, from September 6 to October 5 and for 7.9 months, from November 11 to July 8, with a peak percentage of 35% on September 15.

Wind Direction in Spercheiáda

Wind Direction in SpercheiádaWEWEWJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Spercheiáda 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 3.1 months, from June 25 to September 29, with an average temperature above 74°F. The month of the year in Spercheiáda with the warmest water is August, with an average temperature of 78°F.

The time of year with cooler water lasts for 4.3 months, from December 16 to April 26, with an average temperature below 61°F. The month of the year in Spercheiáda with the coolest water is February, with an average temperature of 56°F.

Average Water Temperature in Spercheiáda

Average Water Temperature in SpercheiádawarmcoolJanFebMarAprMayJunJulAugSepOctNovDec55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°FAug 1278°FAug 1278°F56°FFeb 2256°FFeb 22Jun 2574°FJun 2574°FSep 2974°FSep 2974°FDec 1661°FDec 1661°FApr 2661°FApr 2661°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 58°F56°F57°F59°F65°F72°F77°F78°F76°F71°F66°F61°F

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

Tourism Score in Spercheiáda

Tourism Score in Spercheiádabest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.87.80.70.77.67.66.66.6NowNow 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 Spercheiáda for hot-weather activities is from mid June to late August, with a peak score in the last week of July.

Beach/Pool Score in Spercheiáda

Beach/Pool Score in Spercheiádabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.78.70.00.0NowNowtemperaturetemperature 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 Spercheiáda typically lasts for 8.7 months (267 days), from around March 10 to around December 2, rarely starting before February 5 or after April 7, and rarely ending before November 5 or after December 29.

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

Time Spent in Various Temperature Bands and the Growing Season in Spercheiádagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 1050%Mar 1050%Dec 250%Dec 290%Apr 790%Apr 790%Nov 590%Nov 510%Feb 510%Feb 510%Dec 2910%Dec 293%Jan 153%Jan 15Jul 23100%Jul 23100%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 Spercheiáda should appear around March 15, only rarely appearing before February 26 or after April 1.

Growing Degree Days in Spercheiáda

Growing Degree Days in SpercheiádaJanFebMarAprMayJunJulAugSepOctNovDec0°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°F4,500°F4,500°FMar 1583°FMar 1583°FJun 6900°FJun 6900°FJul 121,800°FJul 121,800°FDec 314,223°FDec 314,223°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 3.3 months, from May 12 to August 21, with an average daily incident shortwave energy per square meter above 6.6 kWh. The brightest month of the year in Spercheiáda is July, with an average of 7.7 kWh.

The darker period of the year lasts for 3.6 months, from October 29 to February 16, with an average daily incident shortwave energy per square meter below 3.0 kWh. The darkest month of the year in Spercheiáda is December, with an average of 1.9 kWh.

Average Daily Incident Shortwave Solar Energy in Spercheiáda

Average Daily Incident Shortwave Solar Energy in SpercheiádabrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 67.8 kWhJul 67.8 kWhDec 201.8 kWhDec 201.8 kWhMay 126.6 kWhMay 126.6 kWhAug 216.6 kWhAug 216.6 kWhOct 293.0 kWhOct 293.0 kWhFeb 163.0 kWhFeb 163.0 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) 2.23.04.35.76.87.67.76.85.33.72.41.9

For the purposes of this report, the geographical coordinates of Spercheiáda are 38.907 deg latitude, 22.128 deg longitude, and 679 ft elevation.

The topography within 2 miles of Spercheiáda contains large variations in elevation, with a maximum elevation change of 2,126 feet and an average elevation above sea level of 829 feet. Within 10 miles contains large variations in elevation (6,768 feet). Within 50 miles also contains extreme variations in elevation (8,337 feet).

The area within 2 miles of Spercheiáda is covered by cropland (46%), trees (25%), shrubs (12%), and grassland (11%), within 10 miles by trees (46%) and cropland (27%), and within 50 miles by trees (34%) and cropland (26%).

This report illustrates the typical weather in Spercheiáda, 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 Spercheiáda.

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