May is a popular month to ask about Red Beach Santorini because conditions can shift week to week along this coast. Expect the water near 20.0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the Aegean Sea.
Red Beach Santorini sea temperature in May — averages 20.0°C
The sea at Red Beach Santorini in Greece averages 20.0°C during May, based on long-run climatology for the Aegean Sea. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · May
20.0°C
warm · Good
Live water now
…
Recommended wetsuit
Shorty 2mm
At 20.0°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.
Monthly comparison
Yes — comfortable for most swimmers · Red Beach Santorini
Can you swim at Red Beach Santorini in June? — 23.0°C water23.0°CCan you swim at Red Beach Santorini in July? — 25.0°C water25.0°CCan you swim at Red Beach Santorini in August? — 26.0°C water26.0°CCan you swim at Red Beach Santorini in September? — 25.0°C water25.0°CCan you swim at Red Beach Santorini in October? — 22.0°C water22.0°CCan you swim at Red Beach Santorini in November? — 20.0°C water20.0°C
Frequently asked questions
What is the average sea temperature at Red Beach Santorini in May?
Red Beach Santorini averages 20.0°C in May, based on long-run climatology for the Aegean Sea.
Is the sea warm enough to swim at Red Beach Santorini in May?
Yes, most swimmers find 20.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Red Beach Santorini in May?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.