May · Greece
Best time to visit Koufonisia in May Weather, crowds & prices
Weather in Koufonisia in May
Average temperature 19°C, 19 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 #5 of 12 months
- Avg temp
- 19°C
- Rainfall
- 19 mm
- Humidity
- 76%
- Days with 6h+ sun
- 31
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Koufonisia scores 8.2/10 for beach and coastal travel - an above-average month (#5 of 12). Expect around 19°C, 19 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Koufonisia pairs Pano and Kato Koufonisi, with sandy beaches, sea caves and a tiny Cycladic harbour village.
May holds up well in Koufonisia — 5th 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 19 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, 5th of 12 months, against 9.8/10 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? June scores 1.6 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Koufonisia in May?
- In May, Koufonisia averages 19°C, 19 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 Koufonisia?
- 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 Koufonisia in May?
- Expect about 19 mm of rain in May. Average humidity is 76% and there are about 31 days with 6+ hours of sunshine.
Curated in Koufonisia
Tickets & experiences
Things to do in Koufonisia
Koufonisia, Greece. Live activities and tours from GetYourGuide, matched to this destination.