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Climate and Average Weather Year Round in Chios Greece

In Chios, the summers are warm, arid, and clear; the winters are long, cold, wet, and partly cloudy; and it is windy year round. Over the course of the year, the temperature typically varies from 43°F to 87°F and is rarely below 34°F or above 92°F.

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

Climate in Chios

coolcoldcoolwarmhotwarmcoolJanFebMarAprMayJunJulAugSepOctNovDecNowNow99%99%57%57%clearovercastprecipitation: 3.9 inprecipitation: 3.9 in0.0 in0.0 inmuggy: 39%muggy: 39%0%0%drydrybeach/pool score: 9.5beach/pool score: 9.50.00.0
Chios weather by month. Click on each chart for more information.

Average Temperature in Chios

The hot season lasts for 3.0 months, from June 10 to September 11, with an average daily high temperature above 81°F. The hottest day of the year is July 31, with an average high of 87°F and low of 72°F.

The cool season lasts for 4.1 months, from November 25 to March 28, with an average daily high temperature below 61°F. The coldest day of the year is February 6, with an average low of 43°F and high of 54°F.

Average High and Low Temperature in Chios

Average High and Low Temperature in ChioshotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 654°FFeb 654°FJul 3187°FJul 3187°F43°F43°F72°F72°FJun 1081°FJun 1081°FSep 1181°FSep 1181°FNov 2561°FNov 2561°FMar 2861°FMar 2861°F64°F64°F66°F66°F49°F49°F47°F47°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.

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 Chios

Average Hourly Temperature in ChiosJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcoldcoldcoolcoolcomfortablewarmwarmhot
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.

Wanchese, North Carolina, United States (5,290 miles away) and Numazu, Japan (5,792 miles) are the far-away foreign places with temperatures most similar to Chios (view comparison).

Compare Chios to another city:

Clouds

In Chios, 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 Chios begins around May 27 and lasts for 4.2 months, ending around October 2. On July 20, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 99% of the time, and overcast or mostly cloudy 1% of the time.

The cloudier part of the year begins around October 2 and lasts for 7.8 months, ending around May 27. On December 14, the cloudiest day of the year, the sky is overcast or mostly cloudy 43% of the time, and clear, mostly clear, or partly cloudy 57% of the time.

Cloud Cover Categories in Chios

Cloud Cover Categories in ChiosclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2099%Jul 2099%Dec 1457%Dec 1457%May 2778%May 2778%Oct 279%Oct 279%NowNowclearmostly clearmostly cloudyovercastpartly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

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

The wetter season lasts 5.5 months, from November 2 to April 17, with a greater than 17% chance of a given day being a wet day. The chance of a wet day peaks at 33% on December 14.

The drier season lasts 6.5 months, from April 17 to November 2. The smallest chance of a wet day is 0% on July 27.

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 33% on December 14.

Daily Chance of Precipitation in Chios

Daily Chance of Precipitation in ChioswetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Dec 1433%Dec 1433%Jul 270%Jul 270%Nov 217%Nov 217%Apr 1717%Apr 1717%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).

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. Chios experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.3 months, from September 19 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 December 10, with an average total accumulation of 3.9 inches.

The rainless period of the year lasts for 3.7 months, from May 27 to September 19. The least rain falls around August 2, with an average total accumulation of 0.0 inches.

Average Monthly Rainfall in Chios

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 in Chios varies significantly over the course of the year. In 2021, the shortest day is December 21, with 9 hours, 29 minutes of daylight; the longest day is June 21, with 14 hours, 51 minutes of daylight.

Hours of Daylight and Twilight in Chios

Hours of Daylight and Twilight in ChiosJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2014 hr, 51 minJun 2114 hr, 51 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 29 minDec 219 hr, 29 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:51 AM on June 14, and the latest sunrise is 1 hour, 48 minutes later at 7:39 AM on October 30. The earliest sunset is at 4:54 PM on December 7, and the latest sunset is 3 hours, 49 minutes later at 8:43 PM on June 27.

Daylight saving time (DST) is observed in Chios during 2021, starting in the spring on March 28, lasting 7.1 months, and ending in the fall on October 31.

Sunrise & Sunset with Twilight and Daylight Saving Time in Chios

Sunrise & Sunset with Twilight and Daylight Saving Time in ChiosJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:51 AMJun 145:51 AM8:43 PMJun 278:43 PMJun 27Dec 74:54 PMDec 74:54 PM7:39 AMOct 307:39 AMOct 30Mar 28DSTMar 28DSTDSTOct 31DSTOct 31daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. 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.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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 Chios

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.

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.

Chios experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.0 months, from June 10 to October 8, during which time the comfort level is muggy, oppressive, or miserable at least 10% of the time. The muggiest day of the year is August 7, with muggy conditions 39% of the time.

The least muggy day of the year is February 8, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Chios

Humidity Comfort Levels in ChiosmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 80%Feb 80%Aug 739%Aug 739%Jun 1010%Jun 1010%Oct 810%Oct 810%NowNowmuggymuggyhumidhumidcomfortablecomfortabledrydryoppressiveoppressive
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.

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 in Chios experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.6 months, from October 13 to March 31, with average wind speeds of more than 12.9 miles per hour. The windiest day of the year is February 5, with an average hourly wind speed of 15.6 miles per hour.

The calmer time of year lasts for 6.4 months, from March 31 to October 13. The calmest day of the year is May 24, with an average hourly wind speed of 10.2 miles per hour.

Average Wind Speed in Chios

Average Wind Speed in ChioswindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mph25 mph25 mphFeb 515.6 mphFeb 515.6 mphMay 2410.2 mphMay 2410.2 mphOct 1312.9 mphOct 1312.9 mphMar 3112.9 mphMar 3112.9 mphNowNow
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 in Chios is from the north throughout the year.

Wind Direction in Chios

Wind Direction in ChiosJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowsouthnorthwesteast
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).

Water Temperature

Chios 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 June 17 to October 2, with an average temperature above 71°F. The day of the year with the warmest water is August 12, with an average temperature of 74°F.

The time of year with cooler water lasts for 4.3 months, from December 18 to April 28, with an average temperature below 62°F. The day of the year with the coolest water is March 6, with an average temperature of 60°F.

Average Water Temperature in Chios

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

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

Tourism Score in Chios

Tourism Score in Chiosbest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.78.72.12.18.58.57.17.1NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism 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 Chios for hot-weather activities is from mid June to early September, with a peak score in the last week of July.

Beach/Pool Score in Chios

Beach/Pool Score in Chiosbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810109.59.50.00.0NowNowprecipitationprecipitationcloudsclouds beach/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.

Growing Season

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 Chios typically lasts for 11 months (344 days), from around January 28 to around January 7, rarely starting after March 15, or ending before December 7.

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

Time Spent in Various Temperature Bands and the Growing Season in Chiosgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Jan 2850%Jan 2850%Jan 750%Jan 790%Mar 1590%Mar 1590%Dec 790%Dec 7Jul 20100%Jul 20100%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 Chios should appear around January 31, only rarely appearing before January 18 or after March 1.

Growing Degree Days in Chios

Growing Degree Days in ChiosJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°FJan 3189°FJan 3189°FMay 22900°FMay 22900°FJun 301,800°FJun 301,800°FDec 315,076°FDec 315,076°FNowNow
The average growing degree days accumulated over the course of the year, 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 8 to August 23, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is June 29, with an average of 8.3 kWh.

The darker period of the year lasts for 3.4 months, from November 3 to February 15, with an average daily incident shortwave energy per square meter below 3.3 kWh. The darkest day of the year is December 21, with an average of 2.1 kWh.

Average Daily Incident Shortwave Solar Energy in Chios

Average Daily Incident Shortwave Solar Energy in ChiosbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 298.3 kWhJun 298.3 kWhDec 212.1 kWhDec 212.1 kWhMay 87.1 kWhMay 87.1 kWhAug 237.1 kWhAug 237.1 kWhNov 33.3 kWhNov 33.3 kWhFeb 153.3 kWhFeb 153.3 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.

Topography

For the purposes of this report, the geographical coordinates of Chios are 38.368 deg latitude, 26.136 deg longitude, and 56 ft elevation.

The topography within 2 miles of Chios contains very significant variations in elevation, with a maximum elevation change of 1,184 feet and an average elevation above sea level of 147 feet. Within 10 miles contains very significant variations in elevation (3,035 feet). Within 50 miles contains large variations in elevation (4,173 feet).

The area within 2 miles of Chios is covered by water (50%) and cropland (11%), within 10 miles by water (55%) and shrubs (12%), and within 50 miles by water (82%).

Data Sources

This report illustrates the typical weather in Chios, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Chios.

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

The stations contributing to this reconstruction are: Chios Island National Airport (LGHI, 98%, 2.8 kilometers, south); Çiğli Air Base (LTBL, 0.8%, 78 kilometers, east); Mytilene International Airport "Odysseas Elytis" (LGMT, 0.7%, 87 kilometers, northeast); and Skiros Airport (LGSY, 0.3%, 158 kilometers, northwest).

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

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.