Argostoli, Kefalonia weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: June – September
What is the weather like in Argostoli, Kefalonia in August?
In August, Argostoli, Kefalonia is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 26.1 °C – lovely and warm for swimming. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. The air is often humid and muggy. All in all, August is an excellent month for a holiday in Argostoli, Kefalonia.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 100 | 100 | 95 |
| Day | 27° | 28° | 25° |
| Night | 24° | 24° | 22° |
| Sea | 25° | 26° | 25° |
| Sun | 12 h | 11 h | 8 h |
| Rain days | 1 | 1 | 6 |
More details for August
- Daylight
- 13 h 41 min06:52 – 20:34
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 29 daysdew point 18 °C or more
- Wind
- 24 km/haverage daily peak
- Cloud cover
- 8 %on average
- Hot days
- 2 days30 °C or more
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
Argostoli, Kefalonia in August: quick answers
Is Argostoli, Kefalonia hot in August?
Yes. In August, Argostoli, Kefalonia is hot: daytime highs average 28 °C and nights stay around 24 °C. On about 2 days the thermometer climbs to 30 °C or more.
Can you swim in Argostoli, Kefalonia in August?
Yes. In August the sea averages 26.1 °C – lovely and warm for swimming.
Does it rain much in Argostoli, Kefalonia in August?
It hardly ever rains.
Argostoli, Kefalonia month by month
The whole year in Argostoli, KefaloniaAll destinations: GreeceWhere to go in AugustSea temperature in August
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)