Hot in Aug
32°C average high
avg high · 23° at night
25°C+ on almost every day
Greece
Santorini weather in August
Is it warm? Yes. August in Santorini is hot: afternoons average 30°C and nights 24°C. Most days (80%) peak between 29°C and 31°C.
Hot · average high
30°C
25°C or more on almost every day.
- Average low24°overnight
- Sea26°average, 2022–2025
- Rainy days01 mm in the month
- SkyMostly clear2% cloud · 99% clear days
How warm it really gets
Every August afternoon from 2011–2025: 465 days. Most (80%) peaked between 29° and 31°.
August, year by year
The average August high in each year. The warmest, 2012, averaged 31°C; the coolest, 2017, 30°C.
Compared with home
Average August highs. Rain is rare: less than one wet day in a typical month.
- Santorini30°
- London24°
- Manchester20°
- Dublin20°
- Cork20°
- Glasgow19°
- Belfast19°
Warmer in August, not much further
Flying times are estimates from Dublin; Santorini is about 4h 15m.
Very hot in Aug
37°C average high
avg high · 21° at night
25°C+ on almost every day · often 35°C+
Hot in Aug
33°C average high
avg high · 20° at night
25°C+ on almost every day
Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Santorini 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