Athens Weather in September
Athens in September sees high daytime temperatures of 29°C (84°F) and nighttime lows of 20°C (68°F). Low rainfall is typical, with around 16 mm (0.6 in) for the month.
Rainfall in Athens in September
Climate statistics over the past 30 years suggest around 2 days of rain, with 16 mm (0.6 in) average for the month. If rain does fall, it tends to be a moderate shower rather than anything heavy.
Temperature in Athens in September
September tends to be one of the perfect months in Athens, with 29°C (84°F) in the afternoon and 20°C (68°F) overnight. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 20°C (68°F) overnight, nights are warm enough to sit outside comfortably in light clothing.
Sunshine in Athens in September
With approximately 277 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in Athens in September
September has wind speeds averaging 1 m/s (2 knots). You can expect very gentle conditions with light air movement on typical days. Since this is an average, daily weather varies from perfectly still moments to some breezier days.
Average water temperature in September
At 23°C (73°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Greece, check out our Athens's climate page.
Athens Temperature in September
Min Temperature
20°C (68°F)
Max Temperature
29°C (84°F)
Water Temperature
23°C (73°F)
Chance of Rain
6%
Precipitation
16 mm (0.6 in)
Rainy days
2 days
Humidity
57%
Windspeed
1 m/s (2 knots)
Sunshine
277 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Athens typically drop from around 31°C (88°F) at the start of September to approximately 27°C (81°F) by the end. Nights are pleasant, with lows typically ranging from 17°C (63°F) to 21°C (70°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Athens in September
Browse day-by-day weather records for Athens spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Athens historical weather extremes in September
Our historical data for Athens spans 1976 to 2025, revealing these weather extremes.
- The warmest day in September was on September 1, 2003, with a maximum of 39°C (102°F).
- The coldest September day was on September 29, 1977, with a maximum of 15°C (59°F).
- Nighttime temperatures dropped to 11°C (52°F) on September 25, 2022, marking the coldest September night on record.
Best Places in Greece in September
Find out more about the weather in Greece and which places have the best travel conditions in this month. See all of Greece in September →
perfect weather
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unpleasant
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What to Wear in Athens in September
Warm but pleasant conditions in Athens in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. The water temperature sits at about 23°C (73°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Athens in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Greece, check out our Athens's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Athens climate overview or explore weather in Greece.
