Athens weather by month
Athens is warmest in July (34°C average high) and coolest in January (12°C). For warm, mostly dry weather, go May to June and September to October. The sea is warm enough for easy swimming June to November.
Warmest month
July
34°C
Coolest month
January
12°C
Wettest month
December
96 mm
Flight from London
3½h
direct, estimated
Planning a trip to Athens?
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Athens temperature by month
Tap a month for the detail and warmer alternatives.
When to go to Athens
What is the best month to visit Athens for sun?
For warm, mostly dry days, go May to June and September to October, going by our 10-year averages.
What is the hottest month in Athens?
July averages 34°C. January is the coolest at 12°C.
When does it rain most in Athens?
December, with about 96 mm of rain.
When is the sea warm enough to swim in Athens?
June to November, when the sea averages 21°C or more.
Planning the trip? Start with our 3-day Athens itinerary.
How we measured this
Daily averages from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis); sea temperatures are 2023 to 2025 averages from the Open-Meteo marine archive. Rain is the average monthly total.
Going to Athens?
Save the places you find on TikTok and Instagram for Athens to one map, and Dream Trip will plan the days around them.
