Skiathos weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: June – September
What is the weather like in Skiathos in September?
In September, Skiathos is warm: daytime highs average 25 °C, and even at night it stays warm at around 21 °C. The sea averages 24.6 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain falls on about 6 days, adding up to 74 mm. All in all, September is an excellent month for a holiday in Skiathos.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 100 | 90 | 48 |
| Day | 28° | 25° | 21° |
| Night | 24° | 21° | 17° |
| Sea | 26° | 25° | 22° |
| Sun | 10 h | 8 h | 5 h |
| Rain days | 3 | 6 | 8 |
More details for September
- Daylight
- 12 h 30 min07:06 – 19:37
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 9 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 30 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %92 %
- Seaweight 25 %100 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 20 %84 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
Skiathos in September: quick answers
Is Skiathos hot in September?
Warm rather than hot: in September, daytime highs in Skiathos average 25 °C and nights cool to about 21 °C.
Can you swim in Skiathos in September?
Yes. In September the sea averages 24.6 °C – pleasant for swimming.
Does it rain much in Skiathos in September?
Rain falls on about 6 days, adding up to 74 mm.
Skiathos month by month
The whole year in SkiathosAll destinations: GreeceGreek Islands weather in SeptemberWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences