Mykonos weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Fair
Best time to visit: June – September
What is the weather like in Mykonos in May?
In May, Mykonos is mild: daytime highs average 20 °C, and nights cool down to about 17 °C. The sea averages 18.4 °C – bracing, so a wetsuit helps for longer swims. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. It is often windy, with gusts of around 29 km/h. All in all, May is a so-so month for a holiday in Mykonos.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 14 h 9 min06:10 – 20:19
- UV index
- 10 · very highclear sky, noon (estimate)
- Muggy days
- 1 daydew point 18 °C or more
- Wind
- 29 km/haverage daily peak
- Cloud cover
- 27 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %18 %
- Seaweight 25 %20 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in May
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- Windproof jacket
Mykonos in May: quick answers
Is Mykonos hot in May?
No. In May, Mykonos is mild: daytime highs average 20 °C and nights drop to about 17 °C.
Can you swim in Mykonos in May?
Only if you don't mind cold water: in May the sea averages just 18.4 °C. Comfortable swimming is possible from June to October.
Does it rain much in Mykonos in May?
It hardly ever rains.
Mykonos month by month
The whole year in MykonosAll destinations: Greece
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)