May · Greece
Best time to visit Santorini in May Weather, crowds & prices
Weather in Santorini in May
Average temperature 20°C, 16 mm of rain, about 30 days with 6+ hours of sunshine and 66% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
8.8/10
Ranked #6 of 12 months
- Avg temp
- 20°C
- Rainfall
- 16 mm
- Humidity
- 66%
- Days with 6h+ sun
- 30
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Santorini scores 8.8/10 for beach and coastal travel - an above-average month (#6 of 12). Expect around 20°C, 16 mm of rain, and roughly 30 days with 6+ hours of sunshine this month.
Santorini is far more than an Oia sunset: volcanic footpaths, black-sand coves, and village tavernas feel most balanced in June, September, and early October.
May is one of the strongest months in Santorini (6th)
With 20°C (69°F) on average, May delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
With around 16 mm of rain, any showers tend to pass through rather than settle in; about 30 days with 6+ hours of sunshine and 14.1 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Santorini at 8.8/10 (6th of 12), just behind June at 10/10.
Pack light clothing, swimwear and real sun protection.
Expect mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Santorini in May?
- In May, Santorini averages 20°C, 16 mm of rain, and about 30 days with 6+ hours of sunshine. Its climate-comfort score is 8.8/10.
- Is May a good time to visit Santorini?
- May earns a 8.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Santorini in May?
- Expect about 16 mm of rain in May. Average humidity is 66% and there are about 30 days with 6+ hours of sunshine.
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