Marathon 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 Marathon in August?
In August, Marathon is very hot: daytime highs average 33 °C, and even at night it stays warm at around 22 °C. The sea averages 25.4 °C – pleasant for swimming. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 27 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Marathon.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 86 | 90 | 99 |
| Day | 34° | 33° | 29° |
| Night | 22° | 22° | 19° |
| Sea | 25° | 25° | 24° |
| Sun | 12 h | 11 h | 9 h |
| Rain days | 1 | 1 | 3 |
More details for August
- Daylight
- 13 h 41 min06:38 – 20:20
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 2 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 7 %on averageAll months
- Hot days
- 27 days30 °C or moreAll months
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %70 %
- 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
- Water bottle – drink plenty
Marathon in August: quick answers
Is Marathon hot in August?
Yes. In August, Marathon is very hot: daytime highs average 33 °C and nights stay around 22 °C. On about 27 days the thermometer climbs to 30 °C or more.
Can you swim in Marathon in August?
Yes. In August the sea averages 25.4 °C – pleasant for swimming.
Does it rain much in Marathon in August?
It hardly ever rains.
Marathon month by month
The whole year in MarathonAll 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). Sources & licences