May · Greece
Best time to visit Sifnos in May Weather, crowds & prices
Weather in Sifnos in May
Average temperature 19°C, 20 mm of rain, about 31 days with 6+ hours of sunshine and 76% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
8.2/10
Ranked #6 of 12 months
- Avg temp
- 19°C
- Rainfall
- 20 mm
- Humidity
- 76%
- Days with 6h+ sun
- 31
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Sifnos scores 8.2/10 for beach and coastal travel - an above-average month (#6 of 12). Expect around 19°C, 20 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Sifnos is the Cycladic island of potters and chefs, with white villages, old trails and the Chrysopigi monastery.
May in Sifnos — reliably good (6th best month)
May averages 19°C (67°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
Expect 20 mm of rain — occasional showers rather than washed-out days — alongside about 31 days with 6+ hours of sunshine and 14 daylight hours.
It scores 8.2/10 here, 6th of 12 months, against 9.9/10 in the destination's best month.
Pack light clothing, swimwear and real sun protection.
Figure on mid-season pricing, with crowds are moderate.
Flexible dates? July scores 1.7 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Sifnos in May?
- In May, Sifnos averages 19°C, 20 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 8.2/10.
- Is May a good time to visit Sifnos?
- May earns a 8.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Sifnos in May?
- Expect about 20 mm of rain in May. Average humidity is 76% and there are about 31 days with 6+ hours of sunshine.
Curated in Sifnos
Tickets & experiences
Things to do in Sifnos
Sifnos, Greece. Live activities and tours from GetYourGuide, matched to this destination.