Athens weather in August
Athens averages 33°C by day and 23°C at night in August, with the sea at 27°C and about 11 mm of rain in the month. It cools by about 4°C into September.
Day
33°C
Night
23°C
Sea
27°C
Rain
11 mm
Flight from London
3½h
What August feels like
August is hot in Athens: proper beach weather.
The sea is warm at 27°C: comfortable for long swims.
It is dry: only about 11 mm of rain in the month.
That is 10°C warmer than an average August day in London.
Of the 56 sun destinations we track, Athens is the #11 warmest in August, and #7 of 23 within 5½ hours of the UK.
Going to Athens in August?
Share the TikToks and Instagram Reels you've saved for Athens to Dream Trip. It finds the places, pins them on a map and builds your days around them.
Want it warmer in August?
These are hotter than Athens this month for at most an hour and a half more flying:
Athens weather by month
August is highlighted. Compare with July and September, or see the full year in Athens.
Athens in August: quick answers
Is Athens hot in August?
August is hot in Athens: proper beach weather. Average highs are 33°C and lows 23°C.
Can you swim in Athens in August?
The sea is warm at 27°C: comfortable for long swims.
Does it rain in Athens in August?
It is dry: only about 11 mm of rain in the month.
What is the warmest month in Athens?
July, at an average high of 34°C. The coolest is January at 12°C.
How long is the flight to Athens from the UK?
About 3½h direct from London, estimated from the 2,410 km distance. Check your airline for exact times.
Still choosing? See where is hot in August for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in August from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. Rain is the average monthly total. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
Planning Athens in August?
Save the restaurants, beaches and views you find on TikTok and Instagram for Athens straight to a map, then let Dream Trip turn them into a day-by-day plan.
