September · Greece
Best time to visit Kasos in September Weather, crowds & prices
Weather in Kasos in September
Average temperature 24°C, 2 mm of rain, about 30 days with 6+ hours of sunshine and 76% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.8/10
Ranked #1 of 12 months
- Avg temp
- 24°C
- Rainfall
- 2 mm
- Humidity
- 76%
- Days with 6h+ sun
- 30
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Kasos scores 9.8/10 for beach and coastal travel - the single best month of the year. Expect around 24°C, 2 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.
September in Kasos tops the year's climate scores
With 24°C (74°F) on average, September delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
At just 2 mm for the month, rain will not shape your plans; you get about 30 days with 6+ hours of sunshine and 12.4 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Kasos at 9.8/10 — the reference point every other month on this page is measured against.
Pack light clothing, swimwear and real sun protection.
Budget for peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Kasos in September?
- In September, Kasos averages 24°C, 2 mm of rain, and about 30 days with 6+ hours of sunshine. Its climate-comfort score is 9.8/10.
- Is September a good time to visit Kasos?
- September earns a 9.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Kasos in September?
- Expect about 2 mm of rain in September. Average humidity is 76% 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.