Santorini weather in May
May in Santorini: nice, dry, with very humid — an excellent time to visit.
#6 of 12 months in Santorini · #298 of 604 destinations to visit in May · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Santorini climate normals — May
| Daytime high | 20°C / 69°F | 😎 nice |
|---|---|---|
| Nighttime low | 17°C / 63°F | |
| Feels like (high) | 21°C / 70°F | |
| Rainfall | 4 mm / 0.2 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 14°C / 58°F | |
| Sunshine | 12.5 h/day | |
| Daylight | 14.1 h | |
| Wind | 28 km/h / 17 mph | |
| Air quality (US AQI) | 53 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Santorini in May — FAQ
- Is May a good time to visit Santorini?
- May in Santorini: nice, dry, with very humid — an excellent time to visit. It ranks #6 of 12 months for Santorini on SeasonMap's comfort score (82/100).
- What is the weather like in Santorini in May?
- In May, Santorini averages a daily high of 20.4°C and a low of 17°C, with about 4.4 mm of rain over roughly 1.2 rainy days.
- What is the air quality in Santorini in May?
- Santorini has a mean US Air Quality Index of about 53 in May.