September · Greece
Best time to visit Skiathos in September Weather, crowds & prices
Weather in Skiathos in September
Average temperature 24°C, 84 mm of rain, about 19 days with 6+ hours of sunshine and 66% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.5/10
Ranked #4 of 12 months
- Avg temp
- 24°C
- Rainfall
- 84 mm
- Humidity
- 66%
- Days with 6h+ sun
- 19
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Skiathos scores 8.5/10 for beach and coastal travel - an above-average month (#4 of 12). Expect around 24°C, 84 mm of rain, and roughly 19 days with 6+ hours of sunshine this month.
Skiathos pairs pine-backed beaches and a lively harbour with the green Sporades landscape.
September in Skiathos — one of the year's strongest windows (4th)
September averages 24°C (75°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
Rainfall runs 84 mm, so plan one flexible day in three; you still get about 19 days with 6+ hours of sunshine and 12.2 hours of daylight.
A 8.5/10 puts this among the year's best months in Skiathos (4th of 12); only June scores higher, at 10/10.
Pack light clothing, swimwear and real sun protection, a packable rain layer.
Figure on mid-season pricing, with crowds are moderate.
Flexible dates? June scores 1.5 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Skiathos in September?
- In September, Skiathos averages 24°C, 84 mm of rain, and about 19 days with 6+ hours of sunshine. Its climate-comfort score is 8.5/10.
- Is September a good time to visit Skiathos?
- September earns a 8.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Skiathos in September?
- Expect about 84 mm of rain in September. Average humidity is 66% and there are about 19 days with 6+ hours of sunshine.
Curated in Skiathos
Tickets & experiences
Things to do in Skiathos
Skiathos, Greece. Live activities and tours from GetYourGuide, matched to this destination.