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Climate and Average Weather Year Round in Santorini Island Greece

In Santorini Island, the summers are warm, humid, arid, and clear; the winters are long, cool, and mostly clear; and it is windy year round. Over the course of the year, the temperature typically varies from 49°F to 85°F and is rarely below 42°F or above 91°F.

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

Climate in Santorini Island

coolcomfortablewarmhotwarmcomfortablecoolJanFebMarAprMayJunJulAugSepOctNovDecNowNow100%100%61%61%clearovercastprecipitation: 2.7 inprecipitation: 2.7 in0.0 in0.0 inmuggy: 47%muggy: 47%0%0%drydrybeach/pool score: 9.6beach/pool score: 9.60.00.0
Santorini Island weather by month. Click on each chart for more information.

The hot season lasts for 3.2 months, from June 8 to September 15, with an average daily high temperature above 80°F. The hottest month of the year in Santorini Island is July, with an average high of 85°F and low of 74°F.

The cool season lasts for 4.0 months, from November 30 to March 28, with an average daily high temperature below 63°F. The coldest month of the year in Santorini Island is February, with an average low of 49°F and high of 58°F.

Average High and Low Temperature in Santorini Island

Average High and Low Temperature in Santorini IslandhotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 658°FFeb 658°FJul 3085°FJul 3085°F49°F49°F75°F75°FJun 880°FJun 880°FSep 1580°FSep 1580°FNov 3063°FNov 3063°FMar 2863°FMar 2863°F67°F67°F69°F69°F55°F55°F53°F53°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 58°F58°F61°F67°F74°F81°F85°F84°F80°F73°F66°F61°F
Temp. 54°F54°F57°F61°F68°F76°F79°F79°F75°F68°F62°F57°F
Low 50°F49°F51°F56°F62°F69°F74°F74°F69°F63°F57°F52°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 Santorini Island

Average Hourly Temperature in Santorini IslandJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowcoldcoldcoolcoolcomfortablecomfortablewarmcoldcold
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.
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© OpenStreetMap contributors

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In Santorini Island, 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 Santorini Island begins around May 26 and lasts for 4.2 months, ending around October 1.

The clearest month of the year in Santorini Island is July, during which on average the sky is clear, mostly clear, or partly cloudy 100% of the time.

The cloudier part of the year begins around October 1 and lasts for 7.8 months, ending around May 26.

The cloudiest month of the year in Santorini Island is December, during which on average the sky is overcast or mostly cloudy 38% of the time.

Cloud Cover Categories in Santorini Island

Cloud Cover Categories in Santorini IslandclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 19100%Jul 19100%Nov 2861%Nov 2861%May 2680%May 2680%Oct 181%Oct 181%NowNowclearmostly clearpartly cloudyovercastmostly 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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 36%35%32%30%23%7%0%1%11%28%37%38%
Clearer 64%65%68%70%77%93%100%99%89%72%63%62%

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

The wetter season lasts 5.1 months, from October 22 to March 26, with a greater than 17% chance of a given day being a wet day. The month with the most wet days in Santorini Island is December, with an average of 9.9 days with at least 0.04 inches of precipitation.

The drier season lasts 6.9 months, from March 26 to October 22. The month with the fewest wet days in Santorini Island is July, with an average of 0.2 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 Santorini Island is December, with an average of 9.9 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 34% on February 4.

Daily Chance of Precipitation in Santorini Island

Daily Chance of Precipitation in Santorini IslandwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 434%Feb 434%Jul 180%Jul 180%Oct 2217%Oct 2217%Mar 2617%Mar 2617%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 9.4d8.9d6.4d3.6d2.1d0.6d0.2d0.3d1.7d4.5d7.5d9.9d

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. Santorini Island experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.3 months, from September 24 to May 1, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Santorini Island is December, with an average rainfall of 2.7 inches.

The rainless period of the year lasts for 4.7 months, from May 1 to September 24. The month with the least rain in Santorini Island is July, with an average rainfall of 0.0 inches.

Average Monthly Rainfall in Santorini Island

Average Monthly Rainfall in Santorini IslandrainrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inDec 172.7 inDec 172.7 inJul 270.0 inJul 270.0 inSep 240.5 inSep 240.5 inMay 10.5 inMay 10.5 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 snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 2.5″2.4″1.5″0.7″0.4″0.1″0.0″0.1″0.3″1.2″2.2″2.7″

The length of the day in Santorini Island varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 41 minutes of daylight; the longest day is June 20, with 14 hours, 39 minutes of daylight.

Hours of Daylight and Twilight in Santorini Island

Hours of Daylight and Twilight in Santorini IslandJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2014 hr, 39 minJun 2014 hr, 39 minJun 2012 hr, 8 minSep 2212 hr, 8 minSep 229 hr, 41 minDec 219 hr, 41 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 10.0h10.9h12.0h13.1h14.1h14.6h14.4h13.5h12.4h11.2h10.2h9.7h

The earliest sunrise is at 5:59 AM on June 13, and the latest sunrise is 1 hour, 36 minutes later at 7:35 AM on October 26. The earliest sunset is at 5:02 PM on December 6, and the latest sunset is 3 hours, 38 minutes later at 8:40 PM on June 28.

Daylight saving time (DST) is observed in Santorini Island 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 Santorini Island

Sunrise & Sunset with Twilight and Daylight Saving Time in Santorini IslandJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:59 AMJun 135:59 AM8:40 PMJun 288:40 PMJun 28Dec 65:02 PMDec 65:02 PM7:35 AMOct 267:35 AMOct 26Mar 31DSTMar 31DSTDSTOct 27DSTOct 27daynightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Santorini Island

Solar Elevation and Azimuth in Santorini IslandJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00001010102020203030303040405050606070000101010102020203030304040405050607077NowNow
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 Santorini Island

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.

Santorini Island experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.1 months, from June 10 to October 15, during which time the comfort level is muggy, oppressive, or miserable at least 12% of the time. The month with the most muggy days in Santorini Island is August, with 13.5 days that are muggy or worse.

The least muggy day of the year is February 26, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Santorini Island

Humidity Comfort Levels in Santorini IslandmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 260%Feb 260%Aug 1347%Aug 1347%Jun 1012%Jun 1012%Oct 1512%Oct 1512%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.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.5d4.7d10.3d13.5d8.8d3.7d0.4d0.0d

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 Santorini Island experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.9 months, from November 5 to April 1, with average wind speeds of more than 13.5 miles per hour. The windiest month of the year in Santorini Island is February, with an average hourly wind speed of 16.0 miles per hour.

The calmer time of year lasts for 7.1 months, from April 1 to November 5. The calmest month of the year in Santorini Island is May, with an average hourly wind speed of 11.2 miles per hour.

Average Wind Speed in Santorini Island

Average Wind Speed in Santorini IslandwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mph25 mph25 mphFeb 616.2 mphFeb 616.2 mphMay 2310.8 mphMay 2310.8 mphNov 513.5 mphNov 513.5 mphApr 113.5 mphApr 113.5 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) 15.716.014.612.711.212.014.514.513.213.113.915.1

The predominant average hourly wind direction in Santorini Island is from the north throughout the year.

Wind Direction in Santorini Island

Wind Direction in Santorini IslandJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestnorthsoutheast
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).

Santorini Island 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 3.4 months, from June 24 to October 5, with an average temperature above 73°F. The month of the year in Santorini Island with the warmest water is August, with an average temperature of 75°F.

The time of year with cooler water lasts for 4.5 months, from December 13 to April 30, with an average temperature below 63°F. The month of the year in Santorini Island with the coolest water is February, with an average temperature of 61°F.

Average Water Temperature in Santorini Island

Average Water Temperature in Santorini IslandwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec60°F60°F65°F65°F70°F70°F75°F75°F80°F80°FAug 2076°FAug 2076°F60°FMar 160°FMar 1Jun 2473°FJun 2473°FOct 573°FOct 573°FDec 1363°FDec 1363°FApr 3063°FApr 3063°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 61°F61°F61°F62°F66°F71°F74°F75°F74°F71°F67°F63°F

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

Tourism Score in Santorini Island

Tourism Score in Santorini Islandbest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.88.83.63.68.88.87.67.6NowNowtemperaturetemperature 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 Santorini Island for hot-weather activities is from mid June to mid September, with a peak score in the last week of July.

Beach/Pool Score in Santorini Island

Beach/Pool Score in Santorini Islandbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810109.69.60.00.0NowNow 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).

Temperatures in Santorini Island are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in Santorini Island

Time Spent in Various Temperature Bands and the Growing Season in Santorini IslandJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Mar 6100%Mar 694%Jan 2394%Jan 23Jul 27100%Jul 27100%NowNowcoldcoolcomfortablewarmhotvery 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 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.

Growing Degree Days in Santorini Island

Growing Degree Days in Santorini IslandJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°FJan 1890°FJan 1890°FMay 3900°FMay 3900°FJun 171,800°FJun 171,800°FDec 315,846°FDec 315,846°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 3.5 months, from May 5 to August 23, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest month of the year in Santorini Island is June, with an average of 8.2 kWh.

The darker period of the year lasts for 3.4 months, from November 1 to February 14, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest month of the year in Santorini Island is December, with an average of 2.4 kWh.

Average Daily Incident Shortwave Solar Energy in Santorini Island

Average Daily Incident Shortwave Solar Energy in Santorini IslandbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 268.4 kWhJun 268.4 kWhDec 202.3 kWhDec 202.3 kWhMay 57.2 kWhMay 57.2 kWhAug 237.2 kWhAug 237.2 kWhNov 13.5 kWhNov 13.5 kWhFeb 143.5 kWhFeb 143.5 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) 2.73.65.06.47.58.28.27.46.04.33.02.4

For the purposes of this report, the geographical coordinates of Santorini Island are 36.406 deg latitude, 25.457 deg longitude, and 0 ft elevation.

The topography within 2 miles of Santorini Island is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).

The area within 2 miles of Santorini Island is covered by cropland (25%), water (25%), artificial surfaces (14%), and trees (13%), within 10 miles by water (90%), and within 50 miles by water (96%).

This report illustrates the typical weather in Santorini Island, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used for this report can be found on the Santorini Airport page.

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.