Hot in Sep
29°C average high
avg high · 20° at night
25°C+ on almost every day
Greece
Skiathos weather in September
Is it warm? Yes. September in Skiathos is warm: afternoons average 27°C and nights 20°C. Most days (80%) peak between 24°C and 30°C.
Warm · average high
27°C
25°C or more on about eight in ten days; 20°C or more on almost every day.
- Average low20°overnight
- Sea25°average, 2022–2025
- Rainy days5114 mm in the month
- SkySome cloud27% cloud · 66% clear days
How warm it really gets
Every September afternoon from 2011–2025: 450 days. Most (80%) peaked between 24° and 30°.
September, year by year
The average September high in each year. The warmest, 2024, averaged 28°C; the coolest, 2014, 26°C.
Compared with home
Average September highs. Expect rain on about 5 days (114 mm in a typical month).
- Skiathos27°
- London21°
- Manchester18°
- Dublin18°
- Cork18°
- Belfast17°
- Glasgow17°
Warmer in September, not much further
Flying times are estimates from Dublin; Skiathos is about 3h 45m.
Hot in Sep
28°C average high
avg high · 20° at night
25°C+ on 9 in 10 days
Hot in Sep
28°C average high
avg high · 21° at night
25°C+ on 9 in 10 days
Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Skiathos airport. Sea: Copernicus ERA5, 2022–2025. Rainy days = days with 1 mm of rain or more, as weather stations count them. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology