May · Greece
Best time to visit Kasos in May Weather, crowds & prices
Weather in Kasos in May
Average temperature 18°C, 10 mm of rain, about 30 days with 6+ hours of sunshine and 83% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
7.5/10
Ranked #7 of 12 months
- Avg temp
- 18°C
- Rainfall
- 10 mm
- Humidity
- 83%
- Days with 6h+ sun
- 30
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Kasos scores 7.5/10 for beach and coastal travel - ranked #7 of 12. Expect around 18°C, 10 mm of rain, and roughly 30 days with 6+ hours of sunshine this month.
Kasos is a small, arid Dodecanese island south of Karpathos, with rocky coves and a plain harbour town.
May in Kasos — reliably good (7th best month)
Temperatures hover around 18°C (64°F) — the kind of month where neither heat nor cold forces the schedule.
At just 10 mm for the month, rain will not shape your plans; you get about 30 days with 6+ hours of sunshine and 14 hours of daylight.
That is 7.5/10 on the same scale — 7th of 12 months, versus 9.8/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, September is materially better in Kasos — 2.3 points higher on the same scale.
Frequently asked
- What is the weather like in Kasos in May?
- In May, Kasos averages 18°C, 10 mm of rain, and about 30 days with 6+ hours of sunshine. Its climate-comfort score is 7.5/10.
- Is May a good time to visit Kasos?
- May earns a 7.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Kasos in May?
- Expect about 10 mm of rain in May. Average humidity is 83% and there are about 30 days with 6+ hours of sunshine.
Curated in Kasos
Tickets & experiences
Things to do in Kasos
Kasos, Greece. Live activities and tours from GetYourGuide, matched to this destination.