Athens sea temperature today: 26°C – beach water temperature, Athens, Greece
Greece · Attica
Athens
Sea
25.9°C78.6°F
Air
UV
Beach day
⁦23–28°C⁩

Last updated ·

Today, September 13, the sea temperature at Athens is 25.9 °C (79 °F). That matches the usual average of 25.6 °C in September. Comfortable for swimming from May to December.

Climate · monthly averages

Sea temperature by month

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.

Warmest in August (26.6°C). Coldest in March (15.2°C). Comfortable for swimming from May to December.

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
MonthSea · MinSea · AvgSea · MaxAir · MinAir · AvgAir · Max
January15.3°C16.1°C16.7°C8.3°C10.5°C13.7°C
February14.6°C15.2°C15.6°C8.0°C10.4°C13.8°C
March14.5°C15.2°C15.7°C9.6°C12.5°C16.1°C
April15.8°C16.2°C17.2°C12.6°C16.3°C20.3°C
May18.0°C18.6°C19.0°C16.4°C20.5°C24.8°C
June22.5°C23.0°C23.9°C22.1°C26.5°C30.8°C
July24.9°C25.9°C26.7°C25.3°C29.7°C34.1°C
August26.0°C26.6°C27.1°C24.6°C28.5°C32.7°C
September25.1°C25.6°C26.2°C20.8°C24.3°C28.5°C
October22.7°C23.2°C23.9°C16.3°C19.3°C23.2°C
November20.2°C20.9°C21.8°C14.0°C16.1°C19.2°C
December17.4°C18.0°C18.7°C10.7°C12.5°C15.3°C

About Athens

Greece's capital rises around the Acropolis, a limestone outcrop crowned by the Parthenon – the Doric temple to Athena built between 447 and 432 BC by Iktinos and Kallikrates and inscribed by UNESCO in 1987. South of the city, the organized Vouliagmeni Beach anchors the Athenian Riviera twelve kilometres along the Saronic Gulf, while Schinias Beach runs long and pine-backed near Marathon on the east coast. Water sits at 24-26 °C75-79 °F from July through September, with Athens International airport thirty-five minutes by Attiki Odos.

Frequently asked questions

Today, September 13, the sea at Athens is 25.9 °C (79 °F)79 °F (25.9 °C) – ideal for swimming for most people. The usual September average is 25.6 °C78 °F.

No single number works for everyone, so the scale on this page is only a guide to how the water feels: below 13 °C55 °F icy, 13–18 °C55–64 °F cold, 18–23 °C64–73 °F refreshing, 23–28 °C73–82 °F pleasantly warm and above 28 °C82 °F like a bath. Right now the sea at Athens is 25.9 °C79 °F.

In May the sea at Athens (Attica, Greece) averages 18.6 °C65 °F – refreshing, good for a short swim. It keeps warming until August, when it peaks at 26.6 °C80 °F.

In October the sea at Athens (Attica, Greece) still averages 23.2 °C74 °F – ideal for swimming for most people. It peaks in August at 26.6 °C80 °F and cools slowly from there.