Athens weather in January
Athens averages 12°C by day and 5°C at night in January, with the sea at 17°C and about 70 mm of rain in the month. That is about 2°C cooler than December.
Day
12°C
Night
5°C
Sea
17°C
Rain
70 mm
Flight from London
3½h
What January feels like
January is cool in Athens: bring a proper jacket.
The sea is 17°C: cold for swimming, so plan on a heated pool.
Rain is occasional: about 70 mm in the month.
That is 5°C warmer than an average January day in London.
Of the 56 sun destinations we track, Athens is the #56 warmest in January, and #23 of 23 within 5½ hours of the UK.
Comparing places? See the warmest place in Greece in winter for every winter month, place by place.
Going to Athens in January?
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 January?
These are hotter than Athens this month for at most an hour and a half more flying:
Athens weather by month
January is highlighted. Compare with December and February, or see the full year in Athens.
Athens in January: quick answers
Is Athens hot in January?
January is cool in Athens: bring a proper jacket. Average highs are 12°C and lows 5°C.
Can you swim in Athens in January?
The sea is 17°C: cold for swimming, so plan on a heated pool.
Does it rain in Athens in January?
Rain is occasional: about 70 mm 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 January for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in January 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 January?
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.
