Weather in Athens in September
September is late summer in Athens: hot and mostly dry. Daytime highs average around 29°C / 84°F, and nights drop to about 20°C / 68°F. Expect just 2 rainy days in a typical September. In the water, expect around 25°C / 77°F, properly warm for swimming. Autumn is gentle, with warm days, and the first rain usually arrives as short thunderstorms. Athens sits in a basin ringed by mountains, which traps heat in summer and keeps the city drier than much of Greece. Days bring around 12½ hours of daylight. Pack light, breathable clothes, a sun hat, high-factor sunscreen and sunglasses. The light is softer than in summer, which makes it a lovely time for photos and walks. Mornings and evenings get noticeably cooler as the month goes on. The weather can change from one week to the next, so pack for both warm and cool days. Get out early and late, and save the hottest hours of the afternoon for the water.
Swimming in Athens in September
Swimming is excellent in Athens in September, with the sea averaging around 25°C / 77°F. After the warmest water of August, the sea cools only slowly. Good spots include the Athens Riviera, around Glyfada and Vouliagmeni. Beaches are lively but less crowded than in high summer. Many coves are rocky or pebbly, so water shoes are useful. No wetsuit needed.
Crowds & Prices in Athens in September
September is peak season in Athens, with visitors from around the world filling the main sights. Accommodation is at its most expensive, and the best rooms go early. The crowds concentrate at the Acropolis, so for a calmer experience, go at opening time or in the last hours before closing. Early mornings and late afternoons are the quietest times at popular sights. Book accommodation well ahead.
What's Open in Athens in September
Athens is open for business all year, with flights, trains and buses running as normal. Hotels and restaurants are open as normal. Museums and sites are open on extended summer hours. Summer festival performances take place at the Odeon of Herodes Atticus below the Acropolis. Public transport and services run as normal. Cafés and tavernas are busy with locals, especially in the evenings and at weekends.
Festivals & Holidays in Athens in September
September is harvest time, with grapes picked for wine in many areas and village feasts on 8 September for the Nativity of the Virgin. Late-summer village festivals continue into September, and the grape harvest gets underway. In Athens, as across Greece, these traditions are very much alive. As the season quietens, local life takes over again, with markets and harvest gatherings.
Is September a Good Time to Visit Athens?
September is a good time for Athens, with long, warm evenings and a relaxed summer atmosphere. Expect highs of around 29°C / 84°F, lows near 20°C / 68°F and rain on around 2 days. Days can still be hot, so plan outdoor sightseeing for the morning. It suits travelers who enjoy eating outdoors and exploring late into the evening. For cooler sightseeing weather, April, May or October would be ideal.
Frequently Asked Questions
What time does the sun set in Athens in September?
Sunset in Athens is at around 7:55 pm at the start of September, around 7:35 pm in mid-September and around 7:10 pm by the end of the month, in Greek local time. Filopappou Hill and Lycabettus Hill are the classic viewpoints.
Is it still hot in Athens in September?
Yes, especially early in the month. September usually stays sunny and warm, with the sea still warm from the summer, but the heat is gentler than in August and evenings are more comfortable. The first autumn showers may arrive towards the end of the month.
Can I visit the Acropolis in September?
Yes. The Acropolis is open on longer summer hours, but September is hot and busy. Go right at opening time or late in the day, bring water and a hat, and expect crowds around midday. Book a timed-entry ticket online in advance.
Do I need a car in Athens in September?
No. Athens has a good metro, trams and buses, and the historic center is compact and walkable. A car is more hassle than help in the city, though it's useful for day trips to places like Cape Sounion. In September, the air-conditioned metro is a welcome escape from the heat.
Is September or October better for a trip to Athens?
Both are excellent. September is warmer and still summery, while October is cooler and more comfortable for long days of sightseeing, with the occasional shower. Choose October if you plan to walk a lot.
Athens Weather by Month
