Very hot in Aug
37°C average high
avg high · 21° at night
25°C+ on almost every day · often 35°C+
Greece
Kefalonia weather in August
Is it warm? Yes. August in Kefalonia is hot: afternoons average 32°C and nights 23°C. Most days (80%) peak between 30°C and 33°C.
Hot · average high
32°C
25°C or more on almost every day.
- Average low23°overnight
- Sea27°average, 2022–2025
- Rainy days15 mm in the month
- SkyMostly clear9% cloud · 92% clear days
How warm it really gets
Every August afternoon from 2011–2025: 465 days. Most (80%) peaked between 30° and 33°.
August, year by year
The average August high in each year. The warmest, 2024, averaged 33°C; the coolest, 2016, 31°C.
Compared with home
Average August highs. Rain is rare: less than one wet day in a typical month.
- Kefalonia32°
- London24°
- Manchester20°
- Dublin20°
- Cork20°
- Glasgow19°
- Belfast19°
Warmer in August, not much further
Flying times are estimates from Dublin; Kefalonia is about 3h 45m.
Hot in Aug
33°C average high
avg high · 24° at night
25°C+ on almost every day
Very hot in Aug
39°C average high
avg high · 22° at night
25°C+ on almost every day · often 35°C+
Air: Copernicus ERA5-Land, 2011–2025, matched to the official averages for Kefalonia 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