© 2020 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved. With its typically Mediterranean climate Mykonos is still fairly warm during September. September is in the fall / autumn in Mykonos and is typically the 4th warmest month of the year.

There are usually nine hours of sunshine and sea temperatures are about 23°C. There are normally 11 hours of bright sunshine each day in Mykonos Town, Mykonos in September - that's 85% of daylight hours . How sunny is it in Mykonos in September? There are usually nine hours of sunshine and sea temperatures are about 23°C. Temperatures are around 20°C at night and 26°C under the hot afternoon sun. Visualize past, present, and future weather from many angles via both static and interactive mapsSatellite maps for visualizing where there is cloud cover and associated precipitationView live current conditions in and around your areaCurrently active global watches and warnings, lightning, and severe weather riskCoverage of top events from the world’s most trusted name in weatherBreaking news and top weather stories from around the globeListen to behind-the-scenes details on trending weather topicsMeet the talent dedicated to bringing you the most accurate informationVideo coverage of the top weather events people are talking aboutProvides winter weather forecasts and the winter weather outlook for your areaVisit our Corporate Site for more info on AccuWeatherDownload our free award-winning apps for Superior Accuracy™ on the goExplore More, Dive Deeper, Analyze Faster with AccuWeather PremiumSpecialized Weather Centers, More of Everything with AccuWeather ProfessionalLet AccuWeather help you personalize your day-to-day forecasts, to help you better know how to plan your day, and your outdoor activities.Florida braces for impact as Hurricane Isaias bears downFlorida Gov. Get the monthly weather forecast for Mykonos, Égée-Méridionale, Grèce, including daily high/low, historical averages, to help you plan ahead.