May is a good time to visit Santorini, as the warmer summer season kicks in.
You can expect sunny blue skies with little or no rain.
How hot is it in Santorini in May?
Daytime temperatures usually reach 23°C (73°F) in Santorini in May, falling to 17°C (62°F) at night.
However, on the warmest days of the month, which normally occur at the end of the month, the temperature may reach a high of around 29°C (84°F).
How sunny is it in Santorini in May?
There are normally 9.5 hours of sunshine each day in Santorini in May – that's around 68% of daylight hours.
Sunrise & sunset in May?
Sunrise is around 6:10am with sunset around 8:15pm.
How warm is the sea around Santorini in May?
The average sea temperature around Santorini in May is 19°C (66°F), which is very cool for swimming.
Does it rain in Santorini in May?
There is usually two days with some rain in Santorini in May, with an average monthly rainfall of 15mm (‹1in).
How windy is it in Santorini in May?
May sees an average wind speed of 18km/h (10 knots; 12 mph). The predominant wind direction is from the north.
What to do in Santorini in May?
Weather conditions in May are good for sunbathing, swimming, snorkelling and scuba diving.
This is also a good time to explore the island on foot, bicycle or motorcycle. Don't miss the preserved ruins of classical antiquity at Ancient Thera and the nearby Minoan Bronze Age settlement of Akrotiri or the narrow picture-perfect alleyways of Firá and Oía.
May is also a good time to avoid the summer crowds and take advantage of cheaper off-season flights and hotel rates.
Labour Day – 1st May.
|High Temp: 23°C (73°F)|
|Low Temp: 17°C (62°F)|
|Sunshine: 9.5 hours per day|
|Daylight: 14 hours per day|
|Wind speed: 18 km/h (10 knots; 12 mph)|
|Wet Days: 2 days with some rain|
|Rainfall: 15mm (‹1in) per month|
|Comfort Level: Low heat & 65% humidity|
|UV Index: High|
|Sea Temp: 19°C (66°F)|
The best time to visit Santorini is during mid-season (May, June, September and October) when the weather is warm and the island is less crowded. The peak season of July and August is beautiful with hot, sunny weather but comes at a cost of sky-rocketing prices in hotels and restaurants.
Note: Weather data for Santorini is based on meteorological statistics gathered for the 30-year period 1991 to 2020, and is sourced from the Hellenic National Meteorological Service (HNMS) at the closest weather station, Santorini (Thira) International Airport (JTR), located about 5km (3mi) southeast of the capital, Fira. Additional climate data is sourced from the World Meteorological Organization (WMO).
Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.
Latest update: Santorini weather in May: 7 October, 2023
Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.