Marathon weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Excellent
Best time to visit: June – September
What is the weather like in Marathon in July?
In July, Marathon is very hot: daytime highs average 34 °C, and even at night it stays warm at around 22 °C. The sea averages 24.7 °C – pleasant for swimming. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 28 days the thermometer climbs to 30 °C or more. All in all, July is an excellent month for a holiday in Marathon.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 14 h 35 min06:12 – 20:47
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 5 %on averageAll months
- Hot days
- 28 days30 °C or moreAll months
- Time zone
- UTC+3Europe/Athens
How the score comes together
- Temperatureweight 35 %59 %
- 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 July
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
Marathon in July: quick answers
Is Marathon hot in July?
Yes. In July, Marathon is very hot: daytime highs average 34 °C and nights stay around 22 °C. On about 28 days the thermometer climbs to 30 °C or more.
Can you swim in Marathon in July?
Yes. In July the sea averages 24.7 °C – pleasant for swimming.
Does it rain much in Marathon in July?
It hardly ever rains.
Marathon month by month
The whole year in MarathonAll destinations: GreeceWhere to go in JulySea temperature in July
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