Average Weather in Mykonos Greece
In Mykonos, the summers are warm, arid, and clear; the winters are long, cold, and partly cloudy; and it is windy year round. Over the course of the year, the temperature typically varies from 47°F to 84°F and is rarely below 39°F or above 89°F.
Based on the beach/pool score, the best time of year to visit Mykonos for hot-weather activities is from mid June to early September.
The warm season lasts for 3.4 months, from June 6 to September 17, with an average daily high temperature above 78°F. The hottest day of the year is July 28, with an average high of 84°F and low of 73°F.
The cool season lasts for 3.9 months, from December 2 to March 29, with an average daily high temperature below 61°F. The coldest day of the year is February 6, with an average low of 47°F and high of 56°F.
Average High and Low Temperature
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 Mykonos, 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 Mykonos begins around May 27 and lasts for 4.2 months, ending around October 1. 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 1 and lasts for 7.8 months, ending around May 27. On December 13, the cloudiest day of the year, the sky is overcast or mostly cloudy 42% of the time, and clear, mostly clear, or partly cloudy 58% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Mykonos varies significantly throughout the year.
The wetter season lasts 5.1 months, from October 24 to March 26, with a greater than 16% chance of a given day being a wet day. The chance of a wet day peaks at 31% on December 21.
The drier season lasts 6.9 months, from March 26 to October 24. The smallest chance of a wet day is 0% on August 22.
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 31% on December 21.
Daily Chance of Precipitation
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. Mykonos experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 7.5 months, from September 24 to May 7, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 8, with an average total accumulation of 2.6 inches.
The rainless period of the year lasts for 4.5 months, from May 7 to September 24. The least rain falls around August 3, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
The length of the day in Mykonos varies significantly over the course of the year. In 2018, the shortest day is December 22, with 9 hours, 35 minutes of daylight; the longest day is June 21, with 14 hours, 45 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:57 AM on June 13, and the latest sunrise is 1 hour, 41 minutes later at 7:38 AM on October 27. The earliest sunset is at 5:00 PM on December 7, and the latest sunset is 3 hours, 43 minutes later at 8:43 PM on June 28.
Daylight saving time (DST) is observed in Mykonos during 2018, starting in the spring on March 25, lasting 7.1 months, and ending in the fall on October 28.
Sunrise & Sunset with Twilight and Daylight Saving Time
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.
Mykonos experiences significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.1 months, from June 13 to October 16, 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 9, with muggy conditions 42% of the time.
The least muggy day of the year is February 22, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Mykonos experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 5.7 months, from October 8 to March 31, with average wind speeds of more than 13.4 miles per hour. The windiest day of the year is January 30, with an average hourly wind speed of 16.2 miles per hour.
The calmer time of year lasts for 6.3 months, from March 31 to October 8. The calmest day of the year is May 24, with an average hourly wind speed of 10.5 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Mykonos is from the north throughout the year.
Mykonos 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 23 to October 4, with an average temperature above 72°F. The day of the year with the warmest water is August 17, with an average temperature of 75°F.
The time of year with cooler water lasts for 4.8 months, from December 9 to May 2, with an average temperature below 63°F. The day of the year with the coolest water is March 2, with an average temperature of 60°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Mykonos 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 Mykonos for general outdoor tourist activities is from mid May to mid October, with a peak score in the second week of September.
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 Mykonos for hot-weather activities is from mid June to early September, with a peak score in the last week of July.
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 Mykonos 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
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
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 23, with an average daily incident shortwave energy per square meter above 7.1 kWh. The brightest day of the year is June 30, with an average of 8.3 kWh.
The darker period of the year lasts for 3.5 months, from November 2 to February 15, with an average daily incident shortwave energy per square meter below 3.4 kWh. The darkest day of the year is December 21, with an average of 2.1 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Mykonos are 37.445 deg latitude, 25.329 deg longitude, and 79 ft elevation.
The topography within 2 miles of Mykonos contains very significant variations in elevation, with a maximum elevation change of 873 feet and an average elevation above sea level of 182 feet. Within 10 miles also contains very significant variations in elevation (1,247 feet). Within 50 miles contains very significant variations in elevation (3,333 feet).
The area within 2 miles of Mykonos is covered by water (30%), cropland (28%), artificial surfaces (12%), and grassland (11%), within 10 miles by water (88%), and within 50 miles by water (92%).
This report illustrates the typical weather in Mykonos, 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 Mykonos.
For each station, the records are corrected for the elevation difference between that station and Mykonos 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 Mykonos is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Mykonos and a given station.
The stations contributing to this reconstruction are: Mikonos Island, Mikonos Airport (98%, 2.1 kilometers, southeast) and Athens Eleftherios Venizelos International Airport (2.0%, 134 kilometers, northwest).
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.