Athens Weather in September
In September, Athens averages a high of 29°C (84°F) and a low of 20°C (68°F), from 50 years of daily records (1971–2025).
29°C
Average high
84°F
20°C
Average low
68°F
37°C
Record high
99°F · September 16, 1987
12°C
Record low
53°F · September 29, 2009
What September Is Like in Athens
- September 2024 was the 2nd warmest September in 50 years of records, 2.4°C (4.3°F) above the long-run average.
- 7 of the 10 warmest Septembers on record in Athens have come since 2010.
- September in Athens has become 1.8°C (3.2°F) warmer on average: the 2010–2024 average against 1970–1989.
- The September heat record, 37°C (99°F) on September 16, 1987, has stood for 38 years.
At least 1 mm of rain falls on 6% of September days, and the month averages 12 mm in total.
Warmest: 1994 (32.0°C)Latest: 2024 (31.3°C)10-year averageLong-run average (28.7°C)
Look Up a Day in September
See the weather in Athens on any September date, year by year.
Source: NOAA GHCN-Daily, Hellinikon (1971–2025). Averages cover 1971–2025. How we compute this