Athens weather in April
Athens averages 20°C by day and 11°C at night in April, with the sea at 17°C and 6 days with at least 1 mm of rain. It warms up by about 5°C into May.
Day
20°C
Night
11°C
Sea
17°C
Rainy days
6
Flight from London
3½h
What April feels like
April is warm in Athens: T-shirt days, a light layer for evenings.
The sea is 17°C: cold for swimming, so plan on a heated pool.
Rain is occasional, on about 6 days.
Of the 48 sun destinations we track, Athens is the #42 warmest in April, and #17 of 23 within 5½ hours of the UK.
Want it warmer in April?
These are hotter than Athens this month for at most an hour and a half more flying:
Athens weather by month
April is highlighted. Compare with March and May, or see the full year in Athens.
Athens in April: quick answers
Is Athens hot in April?
April is warm in Athens: T-shirt days, a light layer for evenings. Average highs are 20°C and lows 11°C.
Can you swim in Athens in April?
The sea is 17°C: cold for swimming, so plan on a heated pool.
Does it rain in Athens in April?
Rain is occasional, on about 6 days.
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 April for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in April 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.
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