Athens weather in December
Athens averages 14°C by day and 8°C at night in December, with the sea at 18°C and 9 days with at least 1 mm of rain. It cools by about 2°C into January.
Day
14°C
Night
8°C
Sea
18°C
Rainy days
9
Flight from London
3½h
What December feels like
December is cool in Athens: bring a proper jacket.
The sea is 18°C: refreshing, and chilly for most people after a few minutes.
Expect some rain: about 9 days with at least 1 mm.
Of the 48 sun destinations we track, Athens is the #48 warmest in December, and #23 of 23 within 5½ hours of the UK.
Want it warmer in December?
These are hotter than Athens this month for at most an hour and a half more flying:
Athens weather by month
December is highlighted. Compare with November and January, or see the full year in Athens.
Athens in December: quick answers
Is Athens hot in December?
December is cool in Athens: bring a proper jacket. Average highs are 14°C and lows 8°C.
Can you swim in Athens in December?
The sea is 18°C: refreshing, and chilly for most people after a few minutes.
Does it rain in Athens in December?
Expect some rain: about 9 days with at least 1 mm.
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 December for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in December 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. A rainy day has at least 1 mm of rain. 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 December?
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