20-Year Climate Average
Santorini, South Aegean, Greece Weather in May
Normal High
71°F
Normal Low
64°F
Rainy Days
~5 of the month
Chance of Rain
15%
Humidity
69%
UV index
Not available
Daylight
14.1 hours
Peak wind
17 mph
Usually good for: walking and sightseeing, running and hiking, outdoor events.
Based on May climate records from 2006–2025 (Open-Meteo Historical Weather Archive). These are planning averages, not a forecast. Data: Open-Meteo.com, CC BY 4.0.
Current conditions
Forecast versus the climate baseline
66°F
It currently feels like 63°F with 71% humidity, a 56°F dew point and 11 mph wind. Climate averages describe the month; this live reading is what matters for plans today.
73° / 66° · 0% rain
73° / 66° · 0% rain
74° / 66° · 0% rain
Best Months to Visit Santorini, South Aegean, Greece
Ranked by historical rainy-day frequency — the driest months over the past 20 years.
Methodology
Monthly values use the 2001–2020 observation period. Temperature, precipitation, humidity or dew point, wind, UV and daylight are shown only when the selected source provides them; unavailable fields are never estimated or silently replaced. These are planning normals, not guarantees for a specific trip.
What is the weather like in Santorini, South Aegean, Greece in May?
The 20-year average high in Santorini, South Aegean, Greece in May is 71°F, with a low around 64°F and about 5 rainy days.